Gotowe bibliografie tematyczne / CDMA

Gotowa bibliografia na temat „CDMA”

Autor: Grafiati
Data publikacji: 4 czerwca 2021
Data aktualizacji: 25 maja 2024

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Artykuły w czasopismach na temat "CDMA"

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Kawski, A., B. Kukliński i P. Bojarski. "Influence Of The Irradiation Time On The Absorption And Emission Spectra Of P-Cyano-N,N-Dialkylanilines In Polar Solvents". Zeitschrift für Naturforschung A 58, nr 7-8 (1.08.2003): 411–18. http://dx.doi.org/10.1515/zna-2003-7-805.

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The effect of the time of irradiation with the excitation wavelength λexc on the absorption and emission spectra of p-cyano-N,N-dimethylaniline (CDMA), p-cyano-N,N-diethylaniline (CDEA) and N,N- dimethylaniline (DMA) in acetonitrile and in n-hexane, as well as the effect of high temperature is studied. It is found that after sufficiently long irradiation of CDMA and CDEA in acetonitrile the short wavelength SE band intensity strongly increases compared to that of the long wavelength LE band. This phenomenon is caused by the photolysis of CDMA and CDEA in polar solvents. In each case both the irradiation time and the delivery of suitable thermal energy leads to irreversible processes. Investigations of the λexc effect on the location and intensity distribution of emission bands have shown their independence of λexc ranging from 260 nm to 330 nm in the LE band. However, a pronounced effect of λexc on the intensity appears in the SE band. In this spectral region DMA molecules formed due to the photolysis of CDMA absorb strongly. Excitation at λexc = 340 - 360 nm in the dimeric absorption band leads to a new emission band overlapping the LE band, which indicates the presence of luminescing dimers.
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Kim, Taeyoon, Jeffrey G. Andrews, Jaeweon Kim i Theodore S. Rappaport. "Multi-code Multicarrier CDMA: Performance Analysis". Journal of Communications Software and Systems 2, nr 1 (6.04.2017): 12. http://dx.doi.org/10.24138/jcomss.v2i1.301.

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A new multi-code multicarrier code division multiple access (MC-MC-CDMA) system is proposed and analyzed in afrequency selective fading channel. By allowing each user to transmit an M-ary code sequence, the proposed MC-MC-CDMA system can support various data rates as required by next generation standards without increasing the interference which is common in general multicarrier CDMA systems. The bit error rate of the system is analytically derived in frequency selective fading, with Gaussian noise and multiple access interference. The results show that the proposed MC-MC-CDMA system clearly outperforms both single-code multicarrier CDMA (MC-CDMA) and single-carrier multi-code CDMA in a fixed bandwidth allocation.This indicates that MC-MC-CDMA can be considered for next generation cellular systems.
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YU, XIANGBIN, XIAODONG ZHANG i GUANGGUO BI. "PERFORMANCE ANALYSIS OF MULTICARRIER CDMA SYSTEM BASED ON COMPLEX WAVELET PACKET AND SPACE–TIME BLOCK CODES IN RAYLEIGH FADING CHANNEL". Journal of Circuits, Systems and Computers 15, nr 01 (luty 2006): 57–74. http://dx.doi.org/10.1142/s0218126606002939.

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On the basis of analyzing the principle of multicarrier CDMA (MC-CDMA) technique and space–time coding technique, using the optimized complex wavelet packet as multicarrier modulation, a novel MC-CDMA system based on complex wavelet packet and space–time block codes is proposed. The bit error rate (BER) performance of the system is investigated in Rayleigh fading channel, and the corresponding BER expression is derived in detail. The system can overcome the decrease of spectrum efficiency of conventional MC-CDMA due to inserting cyclic prefix (CP). Moreover, the application of space–time coding technique strengthens the capability against fading channel significantly and perfects the system performance. Theoretical analysis shows that the proposed system with 2-transmitter antenna and 2-receiver antenna space–time block codes performs four times better than the single-antenna MC-CDMA system based on complex wavelet packet (CWP-MC-CDMA); the same conclusion is also reached by the simulation results in fading channel. As a result, the performance of the proposed CWP-MC-CDMA system outperforms a conventional MC-CDMA system based on DFT, it is close or superior to that of the conventional MC-CDMA with CP. Especially, the CWP-MC-CDMA system with space–time coding has superior ability to combat spatial fading and multi-access interference, and it slightly outperforms conventional MC-CDMA with CP and space–time coding.
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Hawej, M. "INTERFERENCE MITIGATION BASED ON CARRIER INTERFEROMETRY CODES IN THE DOWNLINK LOW EARTH ORBIT SATELLITE CHANNEL". مجلة الجامعة الأسمرية: العلوم التطبيقية 6, nr 5 (31.12.2021): 523–35. http://dx.doi.org/10.59743/aujas.v6i5.1509.

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The multi-carrier code division multiple access (MC-CDMA) system employs the Hadamard-Walsh (HW) code in the low earth orbit (LEO) satellite systems. It has been used as spreading code to maintain the multi-access interference (MAI) in the downlink LEO satellite channel. However, due to the non-orthogonality of the HW codes, these interferences are observed at the MC-CDMA satellite receiver. As a result, the LEO satellite system performance is degraded. In this paper, we propose to employ the orthogonal Carrier Interferometry (CI) code with MC-CDMA in the downlink LEO satellite channel. A new system is called CI/MC-CDMA which is used to mitigate the MAI. Moreover, the performance of the CI/MC-CDMA satellite system in terms of bit error rate (BER) is analyzed and simulated. To confirm the analysis, the system is compared to the HW/MC-CDMA system. It has been shown that CI/MC-CDMA satellite system outperforms HW/MC-CDMA
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Zheng, Liang, i Bin Yan. "The Performance Analysis of CDMA Traffic Access Self-Similar Equalization Protocol". Applied Mechanics and Materials 490-491 (styczeń 2014): 1205–8. http://dx.doi.org/10.4028/www.scientific.net/amm.490-491.1205.

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The random access technique has a bigger influence to the performance optimization of CDMA data traffic. A CDMA random access technique based on self-similar model and its performance analysis are put forward in this paper. The simulation results indicate that the access performance of CDMA data traffic based on self-similar model is attenuated by power law, related to such parameters as fractal coefficient H and network load G. The CDMA traffic access self-similar equalization protocol (TASEP) is put forward and it can improve the access performance of CDMA data traffic distinctly.
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Harlen, Sekar, Eva Yovita Dwi Utami i Andreas Ardian Febrianto. "Bit Error Rate pada Sistem MIMO MC-CDMA dengan Teknik Alamouti-STBC". Techné : Jurnal Ilmiah Elektroteknika 16, nr 02 (2.10.2017): 99–109. http://dx.doi.org/10.31358/techne.v16i02.163.

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Pada makalah ini dilaporkan hasil penelitian sistem MIMO MC-CDMA dengan teknik Alamouti Space Time Block Code (STBC) menggunakan dua antena pengirim dan dua antena penerima. Kinerja sistem diukur dengan nilai Bit Error Rate (BER). Sistem yang diteliti disimulasikan dengan Matlab, dengan variasi jumlah pengguna, jumlah subpembawa, kecepatan pergerakan pengguna dan frekuensi Doppler. Hasil simulasi menunjukkan BER sistem MIMO MC-CDMA tidak mengalami penurunan yang tajam ketika jumlah pengguna dan frekuensi Doppler meningkat. Sedangkan simulasi dengan peningkatan jumlah subpembawa mampu menurunkan nilai BER sistem. Simulasi juga menunjukkan sistem MIMO-MC-CDMA memiliki kinerja sistem yang lebih baik dibandingkan sistem MC-CDMA yang ditunjukkan dengan nilai BER sistem MIMO MC-CDMA berada pada orde 10-4 dan sistem MC-CDMA pada orde 10-1.
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Ambrosio, Jefferson Santos, Francisco De Assis Scannavino Junior i Taufik Abrão. "Seleção de sequências de espalhamento e Desempenho de Sistemas DS/CDMA". Semina: Ciências Exatas e Tecnológicas 37, nr 1 (16.03.2016): 55. http://dx.doi.org/10.5433/1679-0375.2016v37n1p55.

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Neste trabalho são discutidos conceitos fundamentais relativo à comunicação de múltiplo acesso por divisão de código (CDMA). Especificamente, analisa-se o impacto da seleção de sequências de espalhamento sobre o desempenho e capacidade, em termos de número máximo de usuários suportados, em sistemas CDMA por sequência direta (DS/CDMA), considerando ambientes com ruído branco Gaussiano, carregamento de sistema variável e múltiplas antenas (MISO-CDMA).
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Panday, Sarika, i Saurabh Sardey. "GSM and CDMA Based Communication System". Journal of Communication Engineering and its Innovations 8, nr 2 (30.08.2022): 21–25. http://dx.doi.org/10.46610/jocei.2022.v08i02.004.

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Cellular mobile services have been around for a while and are continuously developing today. Numerous communication services, including CDMA and GSM, developed alongside these services. The two most significant technical standards for mobile communication are CDMA and GSM. The GSM and CDMA both transform mobile phone data into radio waves. However, these technologies differ in terms of how calls and data transfer occur through a network. One of the primary distinctions between CDMA and GSM is that CDMA doesn't require a SIM card and instead relies on ESNs to link a mobile phone to its network (Electronic Serial Number).
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Mestoui, Jamal, Mohammed El Ghzaoui, Serghini Elaage, Abdelmounim Hmamou i Jaouad Foshi. "CE-OFDM-CDMA Phase Modulation for 5G System". International Journal of Mathematical, Engineering and Management Sciences 6, nr 4 (18.07.2021): 1100–1114. http://dx.doi.org/10.33889/ijmems.2021.6.4.065.

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In the present work, we propose a novel modulation scheme for 5G wireless communication system. Our contribution is to combine PM-OFDM (Phase Modulation Orthogonal Frequency Division Multiplexing) and CDMA (Code Division Multiple Access) to exploit their distinctive advantages. On the one hand, PM-OFDM is an effective technique to combat multipath fading effects. On the other hand, CDMA can serve multiple users who are using the same resources of time/frequency. The aim is to make a combination of PM-OFDM and CDMA techniques. In this paper, the OFDM-CDMA scheme and its PAPR (Peak-to-Average Power Ratio) statistics are reviewed. In this paper, the proposed scheme PM-OFDM-CDMA is described and its performances in terms of PAPR, power spectral density, and BER (Bit Error Rate) are analyzed. Moreover, MMSE (Minimum Mean Square Error) equalizer is used to avoid multipath and noise effects simultaneously. The simulation through AWGN (Additive white Gaussian noise) and Rayleigh channels is performed using MATLAB. From the simulation results, we observed that PM-OFDM-CDMA is an efficient technique in terms of energy consumption (PAPR = 0dB). Besides, CE-OFDM-CDMA offers high spectral efficiency with low BER due to its low PAPR. In CE-OFDM-CDMA method, the shape of the spectrum varies according to the value of the modulation index h. The band occupied by the spectrum increases with the value of h. Therefore, CE-OFDM-CDMA could be considered as a suitable technique for 5G applications.
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Kusumawardhani, Eka, Rina Pudji Astuti, Nachwan Mufti Adriansyah, Fitri Imansyah i Leonardus Sandy Ade Putra. "Performance Analysis of Multiple Input Multiple Output (MIMO) Multi-Carrier Code-Division Multiple Access (MC-CDMA) Combined with Quasi-Orthogonal Space Time Block Coding (QO-STBC) in Rayleigh Fading Channel". POSITRON 12, nr 2 (30.11.2022): 120. http://dx.doi.org/10.26418/positron.v12i2.46613.

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The need for a communication system with a higher data rate and mobility grows along with information and communication technology development. Combining MC-CDMA with the MIMO system and supporting the system with a good transmit diversity technique is a promising idea to provide the needed communication system, especially in high mobility conditions. MC-CDMA can support ubiquitous communications without affecting the achievable BER and is more capable of high-speed mobility. It integrates the benefit of both OFDM and CDMA. On the other hand, QO-STBC increases the bit rate without using additional bandwidth to transmit diversity in the MIMO system. So, this study proposed a system combining the MIMO MC-CDMA system with QO-STBC. The proposed system is investigated under high mobility conditions to see the system's performance. The simulation results show that our system performs better than the MC-CDMA STBC system and the QOSTBC system but not better than the MC-CDMA multilevel coding scheme. To reach the value of BER 10−3, MC-CDMA multilevel Coding requires less power, around 5 dB, than the proposed system.
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Rozprawy doktorskie na temat "CDMA"

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Deus, Junior Getulio Antero de. "Sistemas FFH-CDMA codificados". [s.n.], 2002. http://repositorio.unicamp.br/jspui/handle/REPOSIP/260269.

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Orientador : Jaime Portugheis
Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Eletrica e de Computação
Made available in DSpace on 2018-08-02T01:11:32Z (GMT). No. of bitstreams: 1 DeusJunior_GetulioAnterode_D.pdf: 9215941 bytes, checksum: 93364e4dd602d44e4f2d6d1758043dfd (MD5) Previous issue date: 2002
Resumo: Neste trabalho é desenvolvido um estudo sobre um sistema FFH-CDMA cujo receptor de máxima verossimilhança (MV) não-quantizado necessita de uma não-linearidade de difícil implementação. Para um sistema FFH-CDMA não-codificado propomos a utilização de um único perceptron para a implementação da não-linearidade. Esta proposta demonstrou apresentar degradação desprezível quando comparada ao receptor de MV. O cálculo da probabilidade de erro par-a-par tanto para receptores quantizados quanto para não-quantizados, foi também realizado. Um sistema que utiliza um receptor de :MVnão-quantizado demonstrou possuir ganho considerável em termos do número de usuários simultâneos quando comparado a um sistema quantizado. Motivados por este fato, realizamos cálculos para a capacidade de canal por dimensão e para a taxa de corte de canal do sistema FFH-CDMA considerado. Os resultados mostraram ganhos significativos do sistema tanto em termos de número de usuários simultâneos, como também em termos de relação sinal-ruído (para a probabilidade e o número de usuários fixados). A partir de uma aproximação para a probabilidade de erro par-a-par, um critério de projeto dos codificadores é proposto. Alguns codificadores convolucionais que se adequam ao critério proposto podem ser encontrados da literatura. Resultados de desempenho obtidos através de simulação e de limitantes superiores para códigos convolucionais terminados encontrados na literatura, mostraram a eficiência do critério de projeto sugerido para os codificadores. A partir das expressões para a taxa de corte de canal pode-se obter valores otimizados para taxas de codificação. Nem todos estes valores se encontram na literatura. Sendo assim, um algoritmo de procura de codificadores foi desenvolvido de acordo com o critério de projeto sugerido. Vários codificadores foram encontrados que podem eventualmente ser utilizados em outras aplicações. Alguns codificadores obtidos comprovam que um sistema FFH-CDMA codificado, com uma treliça de 1024 estados, pode trabalhar bem próximo da taxa de corte de canal
Abstract: This work presents a study of FFH-CDMA systems whose maximum likelihood (ML) receiver uses a nonlinearity of difficult of implementation. For an uncoded FFH-CDMA system, we propose the use of an unique perceptron to approximate the optimum nonlinearity. The proposed perceptron has performance almost identical to ML detection. An unquantized FFH-CDMA system can support a considerable greater number of simultaneous active users than a quantized FFH-CDMA system. Motivated by this fact, we evaluated the normalized sum capacity and the channel cutoff rate of the considered system. The results have showed expressive gains of an unquantized FFH-CDMA system in terms of number of active users as well as in terms of signal-to-noise ratio. Starting from an approximation of the pairwise error probability, a design criterion is proposed. Performance results obtained through computer simulation and upper bounds for convolutional codes found in the literature, showed the effectiveness of the proposed design criterion. A search algorithm for finding codes based on this criterion was implemented. Some of the coders obtained give evidence that a coded FFH-CDMA system, with a trellis of 1024 states, can work near channel cutoff rate
Doutorado
Telecomunicações e Telemática
Doutor em Engenharia Elétrica
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Venkatasubramanian, Ramasamy. "Beamforming for MC-CDMA". Thesis, Virginia Tech, 2003. http://hdl.handle.net/10919/31287.

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Orthogonal Frequency Division Multiplexing (OFDM) has recently gained a lot of attention and is a potential candidate for Fourth Generation (4G) wireless systems because it promises data rates up to 10Mbps. A variation of OFDM is Multi-Carrier CDMA (MC-CDMA) which is an OFDM technique where the individual data symbols are spread using a spreading code in the frequency domain. The spreading code associated with MC-CDMA provides multiple access technique as well as interference suppression. Often times in cellular and military environments the desired signal can be buried below interference. In such conditions, the processing gain associated with the spreading cannot provide the needed interference suppression. This research work investigates multi-antenna receivers for OFDM and MC-CDMA systems; specifically this works investigates adaptive antenna algorithms for MC-CDMA for very different channel conditions. Frequency domain beamforming is studied in this research predominantly through simulation. As an alternative a time domain beamforming is also studied. Time variations in the channel can disrupt the orthogonality between subcarriers. Minimum Mean Square Error (MMSE) detection coupled with MMSE beamforming is proposed for time varying channels. Semi-analytic results are derived to study the Bit Error Rate (BER) performance. These results show significant performance improvement in the presence of interference. Joint MMSE weights in space and frequency is also investigated and semi-analytic results are derived to study their BER performance.
Master of Science
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LE, BOT MARIE. "Antennes adaptatives en CDMA". Paris, CNAM, 2001. http://www.theses.fr/2001CNAM0384.

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Ce rapport de these traite de la demodulation a la station de base multi-capteurs dans le cadre d'une communication radiomobile en cdma. Apres un rappel du systeme cdma, nous analysons le canal de propagation. Nous presentons le recepteur optimal (mlse) dans le cas general d'une modulation lineaire, puis applique au cdma. Nous valorisons alors le role des codes d'etalement dans la demodulation en les separant du traitement spatio-temporel, qui est adapte au canal et rejette les brouilleurs. Nous proposons deux facons differentes de mettre en uvre le mlse, qui tiennent compte de la coloration spatiale et temporelle du bruit. Ceci est tres important lorsque les signaux brouilleurs proviennent des memes secteurs geographiques, ou en cas d'eblouissement. L'analyse des performances est grandement facilitee par le developpement d'un critere simplifie, qui permet d'approcher correctement la probabilite d'erreur. Nous evaluons ainsi les performances des recepteurs obtenus par les deux methodes proposees, pour differentes applications, et nous montrons qu'elles augmentent la capacite cellulaire de maniere significative. Nous comparons ces resultats avec les performances du recepteur rake classique, qui est sous-optimal en presence de bruit colore. Nous fournissons egalement une borne de reference qui indique les performances ultimes qu'on peut esperer atteindre sans erreur de modele. Enfin nous nous interessons a l'estimation du canal, dont la precision a un impact decisif sur les performances des recepteurs. Nous developpons des techniques originales de rectification, qui prennent en compte la presence de trajets ponctuels ou diffus, d'un point de vue aussi bien spatial que temporel. Nous sommes ainsi capables d'affiner les estimations classiques du canal, au sens des moindres carres. Les performances sont evaluees en termes d'erreur quadratique moyenne d'estimation, et montrent l'efficacite de ces techniques.
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SHEN, HANHONG. "SEMIBLIND MULTIUSER DETECTION FOR MC-CDMA". University of Cincinnati / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1127324165.

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SHARMA, ANSHUL. "Performance Analysis of MC-CDMA and CI/MC-CDMA Using Interference Cancellation Techniques". University of Cincinnati / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1218826853.

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Jakubek, David Andrew. "Coherent/noncoherent detection of coherent optical heterodyne DPSK-CDMA and MFSK-CDMA signals". Thesis, Monterey, California. Naval Postgraduate School, 1991. http://hdl.handle.net/10945/28033.

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Haiou, Zheng, i Zhang Naitong. "ANALYSIS OF HYBRID FDMA/CDMA SYSTEMS IN RICIAN FADING". International Foundation for Telemetering, 1999. http://hdl.handle.net/10150/606808.

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International Telemetering Conference Proceedings / October 25-28, 1999 / Riviera Hotel and Convention Center, Las Vegas, Nevada
In this paper, a hybrid frequency division multiple access/code division multiple access (FDMA/CDMA) system in a Rician fading channel is described and analysis. The performance of the hybrid system is compared with a wideband CDMA system, which occupies the same total bandwidth. The results show that for DPSK modulation with a RIKE receiver, a hybrid system can have a greater capacity with a strong direct path component or a high signal to noise ratio (SNR). Otherwise, a wideband system remains optimal.
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Cheung, Tze Chiu. "2GHz W-CDMA Radio Transceiver". Thesis, Virginia Tech, 1998. http://hdl.handle.net/10919/36411.

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A radio transceiver has been designed and built for a W-CDMA experimental system operating at 2GHz. The radio is an RF front-end for mobile terminals. The radio provides the functions of modulation and demodulation to enable transmitting and receiving digital information through the air link. The radio comprises one transmitter in conjunction with transmit power control (TPC), two independent receivers in conjunction with automatic gain control (AGC) and automatic frequency control (AFC), and one common synthesizer. Data exchange between the radio and the baseband processor takes place in an 8-bit digital format. Digital-to-analog converters (DAC) at the transmitter and analog- to-digital converters (ADC) at the receivers provide the interface between the radio and the baseband processor. DACs are also used to convert the 7-bit command codes from the processor to analog signals for the TPC, AGC and AFC. The radio transceiver is designed to meet the stringent requirements imposed by the W-CDMA system. The 70dB TPC enables the adaptive power control for combating the near-far problem. The high linearity of the transmitter provides the use of linear modulation with less than 40dBc adjacent channel power suppression. The 0.03125ppm tuning resolution of the AFC maximizes the receiver sensitivity. The 80dB AGC produces a constant demodulated signal level to the ADC regardless of the RF signal level. This thesis documents the design methodology for this radio transceiver.
Master of Science
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Duran, Omer Agah. "Multiuser Receivers For Cdma Downlink". Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/12609953/index.pdf.

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In this thesis, multiuser receivers for code division multiple-access (CDMA) downlink are studied under frequency selective fading channel conditions. The receivers investigated in this thesis attempt to estimate desired symbol as a linear combination of chip-rate sampled received signal sequence. A common matrix-vector representation of signals, which is similar to the model given by Paulraj et. al. is constructed in order to analyze the receivers studied in this thesis. Two receivers already well known in the literature are introduced and derived by using the common signal model. One of the receivers uses traditional matched filter and the other uses symbol-level linear minimum mean square error (MMSE) estimation. The receiver that uses traditional matched filter, also known as the conventional RAKE receiver, benefits from time diversity by combining the signal energy from multiple paths. The conventional RAKE receiver is optimal when multiple-access interference (MAI) is absent. Linear MMSE based receivers are known to suppress MAI and to be more robust to noise enhancement. The optimal symbol-level linear MMSE based receiver requires inversion of large matrices whose size is determined by either number of active users or spreading factor. These two parameters can be quite large in many practical systems and hence the computational load of this receiver can be a problem. In this thesis, two alternative low-complexity receivers, which are chip-level linear MMSE equalizer proposed by Krauss et. al. and interference-suppressing RAKE receiver proposed by Paulraj et. al., are compared with the linear full-rank MMSE based receiver and with the conventional RAKE receiver in terms of bit-error-rate performance. Various simulations are performed to evaluate the performance of the receivers and the parameters affecting the receiver performance are investigated.
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Wan, William Ming. "Digital CDMA multi-carrier demodulator". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1996. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/MQ28260.pdf.

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Książki na temat "CDMA"

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Tachikawa, Keiji, red. W-CDMA. Chichester, UK: John Wiley & Sons, Ltd, 2002. http://dx.doi.org/10.1002/0470854642.

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Tachikawa, Keiji, red. W-CDMA. Chichester, UK: John Wiley & Sons, Ltd, 2002. http://dx.doi.org/10.1002/0470854642.

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Ghafouri-Shiraz, Hooshang, i M. Massoud Karbassian. Optical CDMA Networks. Chichester, UK: John Wiley & Sons, Ltd, 2012. http://dx.doi.org/10.1002/9781119941330.

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Hanzo, L., i T. Keller. OFDM and MC-CDMA. Chichester, UK: John Wiley & Sons, Ltd, 2006. http://dx.doi.org/10.1002/9780470031384.

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Ipatov, Valery P. Spread Spectrum and CDMA. Chichester, UK: John Wiley & Sons, Ltd, 2005. http://dx.doi.org/10.1002/0470091800.

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Chen, Hsiao-Hwa. Next generation CDMA technologies. Hoboken, NJ: John Wiley, 2007.

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CDMA systems capacity engineering. Norwood, MA: Artech House, 2005.

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Ipatov, Valery P. Spread Spectrum and CDMA. New York: John Wiley & Sons, Ltd., 2005.

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Yang, Samuel C. CDMA RF system engineering. Boston: Artech House, 1998.

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E, Miller Leonard, red. CDMA systems engineering handbook. Boston, Mass: Artech House, 1998.

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Części książek na temat "CDMA"

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Klostermeyer, Rüdiger. "Codespreizverfahren — CDMA". W Digitale Modulation, 287–331. Wiesbaden: Vieweg+Teubner Verlag, 2001. http://dx.doi.org/10.1007/978-3-322-89549-3_6.

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Wong, Marcus. "CDMA Femtocells". W Femtocells, 93–118. New York: River Publishers, 2022. http://dx.doi.org/10.1201/9781003338178-6.

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Xavier, Bruno de Souza Abreu, i Arlindo Moreira Fartes Filho. "CDMA Evolution". W Designing cdma2000® Systems, 15–50. Chichester, UK: John Wiley & Sons, Ltd, 2005. http://dx.doi.org/10.1002/0470020121.ch2.

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Hassan, Amer A., John E. Hershey i Gary J. Saulnier. "Spatial Optical CDMA". W Perspectives in Spread Spectrum, 107–25. Boston, MA: Springer US, 1998. http://dx.doi.org/10.1007/978-1-4615-5531-5_5.

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Höher, Peter Adam. "DS-CDMA-Empfängerkonzepte". W Grundlagen der digitalen Informationsübertragung, 471–86. Wiesbaden: Vieweg+Teubner, 2011. http://dx.doi.org/10.1007/978-3-8348-9927-9_23.

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Stüber, Gordon L. "CDMA Cellular Systems". W Principles of Mobile Communication, 563–92. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-55615-4_12.

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Höher, Peter Adam. "DS-CDMA-Empfängerkonzepte". W Grundlagen der digitalen Informationsübertragung, 625–42. Wiesbaden: Springer Fachmedien Wiesbaden, 2013. http://dx.doi.org/10.1007/978-3-8348-2214-7_24.

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Terré, Michel, Mylène Pischella i Emmanuelle Vivier. "CDMA and UMTS". W Wireless Telecommunication Systems, 59–94. Hoboken, NJ USA: John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118625422.ch3.

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Stüber, Gordon L. "CDMA Cellular Systems". W Principles of Mobile Communication, 665–703. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4614-0364-7_12.

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Silva, Paulo, i Rui Dinis. "DS-CDMA and MC-CDMA Systems with Nonlinear Transmitters". W Frequency-Domain Multiuser Detection for CDMA Systems, 137–92. New York: River Publishers, 2022. http://dx.doi.org/10.1201/9781003338208-5.

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Streszczenia konferencji na temat "CDMA"

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Nakamura, Moriya, i Ken-ichi Kitayama. "Error-free Transmission in Optical Space-CDMA for 2-D Parallel Data Links". W Optics in Computing. Washington, D.C.: Optica Publishing Group, 1997. http://dx.doi.org/10.1364/oc.1997.othd.9.

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Code division multiple access (CDMA) is an asynchronous, random access protocol. In conventional time-domain CDMAs, each data bit is encoded into a waveform which corresponds to a signature code sequence [1], [2]. We have proposed and experimentally demonstrated a space-CDMA for parallel transmission aiming at the applications to future high-throughput 2-D parallel data links connecting massively parallel processors of a number of data bits regularly aligned on two-dimensional (2-D) grids, so-called bit-planes [3], [4].
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Inaty, Elie, Robert Raad i Paul Fortier. "CDMA based dynamic bandwidth allocation (CDBA) scheme for EPON". W ICC 2012 - 2012 IEEE International Conference on Communications. IEEE, 2012. http://dx.doi.org/10.1109/icc.2012.6364134.

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Takasago, K., T. Furusawa i F. Kanuari. "Femtosecond code-division multiple-access system with 1.3 μm Cr:forsterite laser". W The European Conference on Lasers and Electro-Optics. Washington, D.C.: Optica Publishing Group, 1998. http://dx.doi.org/10.1364/cleo_europe.1998.ctui63.

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There is increasing interest in utilizing optical code-division multiple-access (CDMA) schemes in fiber-optic local area networks because of its wide bandwidth, high information security, and the capability for multiple access. Both synchronous and asynchronous optical CDMA system have been actively studied. In general, the numbers of subscribers and the simultaneous users are larger in the synchronous CDMA although the system is more complex. However, a femtosecond CDMA scheme based on spectral encoding and decoding, which is categorized as an asynchronous scheme [1], can allow a large number of simultaneous users. [2] In this paper, we demonstrate the femtosecond code-division multiple-access based on spectral encoding of 1.3 μm Cr:forsterite laser.
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Lee, Yoonill. "Performance Analysis of DS-CDMA and MC-CDMA Systems". W 2018 9th IEEE Annual Ubiquitous Computing, Electronics & Mobile Communication Conference (UEMCON). IEEE, 2018. http://dx.doi.org/10.1109/uemcon.2018.8796635.

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Wu, Zhiqiang, i Carl R. Nassar. "Ultra wideband MC-CDMA and CI/MC-CDMA systems". W ITCom 2002: The Convergence of Information Technologies and Communications, redaktor Carl R. Nassar. SPIE, 2002. http://dx.doi.org/10.1117/12.455395.

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Ma, Meng, Yuli Yang, Hongbing Cheng i Bingli Jiao. "A Capacity Comparison Between MC-CDMA and CP-CDMA". W IEEE Vehicular Technology Conference. IEEE, 2006. http://dx.doi.org/10.1109/vtcf.2006.363.

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Frigyes, Istvan. "CDMA in Optics". W 2006 IEEE Ninth International Symposium on Spread Spectrum Techniques and Applications. IEEE, 2006. http://dx.doi.org/10.1109/isssta.2006.311813.

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Ali, Zahid, Mohamad A. Deriche i Mohamed Adnan Landolsi. "CDMA multiuser radiolocation". W 2010 IEEE 21st International Symposium on Personal, Indoor and Mobile Radio Communications Workshops (PIMRC Workshops). IEEE, 2010. http://dx.doi.org/10.1109/pimrcw.2010.5670369.

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Leeson, M. S., K. Cui i E. L. Hines. "Enhancing optical CDMA". W 2009 11th International Conference on Transparent Optical Networks (ICTON). IEEE, 2009. http://dx.doi.org/10.1109/icton.2009.5185306.

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Gao, Kanke, Stella N. Batalama, Dimitris A. Pados i John D. Matyjas. "Cognitive CDMA channelization". W 2009 Conference Record of the Forty-Third Asilomar Conference on Signals, Systems and Computers. IEEE, 2009. http://dx.doi.org/10.1109/acssc.2009.5469930.

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Raporty organizacyjne na temat "CDMA"

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Ghaffari, B., i E. Geraniotis. Analysis of Coherent Random-Carrier CDMA and Hybrid WDMA/CDMA Multiplexing for High-Capacity Optical Networks. Fort Belvoir, VA: Defense Technical Information Center, styczeń 1989. http://dx.doi.org/10.21236/ada454792.

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Verdu, Sergio. Multi-User Detection for Next-Generation CDMA. Fort Belvoir, VA: Defense Technical Information Center, grudzień 2000. http://dx.doi.org/10.21236/ada391148.

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Yokota, H., i G. Dommety. Mobile IPv6 Fast Handovers for 3G CDMA Networks. RFC Editor, czerwiec 2008. http://dx.doi.org/10.17487/rfc5271.

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Honig, Michael L. Linear Interference Suppression and Pulse Optimization for DS-CDMA. Fort Belvoir, VA: Defense Technical Information Center, listopad 1999. http://dx.doi.org/10.21236/ada371495.

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Mitra, Urbashi. Instrumentation to Support Advanced Research in Wireless CDMA Communications. Fort Belvoir, VA: Defense Technical Information Center, listopad 2003. http://dx.doi.org/10.21236/ada419513.

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Irizarry, Alfredo V. Average Likelihood Methods for Code Division Multiple Access (CDMA). Fort Belvoir, VA: Defense Technical Information Center, maj 2014. http://dx.doi.org/10.21236/ada603961.

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Irizarry, Alfredo V. Average Likelihood Methods of Classification of Code Division Multiple Access (CDMA). Fort Belvoir, VA: Defense Technical Information Center, maj 2016. http://dx.doi.org/10.21236/ad1009582.

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Mitra, Urbashi. New Robust Estimation/Detection Techniques With Applications to Wireless CDMA Communications. Fort Belvoir, VA: Defense Technical Information Center, wrzesień 1999. http://dx.doi.org/10.21236/ada379418.

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Wieselthier, Jeffrey E., Anthony Ephremides i Julie A. Tarr. A Distributed Reservation-Based CDMA Protocol That Does Not Require Feedback Information. Fort Belvoir, VA: Defense Technical Information Center, październik 1986. http://dx.doi.org/10.21236/ada453164.

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Jia, Tao, i Alexandra Duel-Hallen. Improved Channel Allocation for Multicarrier CDMA with Adaptive Frequency Hopping and Multiuser Detection. Fort Belvoir, VA: Defense Technical Information Center, sierpień 2008. http://dx.doi.org/10.21236/ada500434.

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