Дисертації з теми "Cooperative Relaying Systems"
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Almradi, Ahmed Mohamed Ahmed. "Design and analysis of MIMO cooperative relaying systems." Thesis, University of Manchester, 2017. https://www.research.manchester.ac.uk/portal/en/theses/design-and-analysis-of-mimo-cooperative-relaying-systems(07eae61a-0990-41a6-a988-46652e2cced0).html.
Повний текст джерелаGuerrero, Laura Yadira. "Cooperative diversity for distributed multicarrier relaying systems." Thesis, King's College London (University of London), 2017. https://kclpure.kcl.ac.uk/portal/en/theses/cooperative-diversity-for-distributed-multicarrier-relaying-systems(773aaeec-11e4-43b7-a1ff-cd3a86644a52).html.
Повний текст джерелаZhang, Lu. "Decentralized cooperative communication for wireless relaying networks." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 202 p, 2009. http://proquest.umi.com/pqdweb?did=1885757461&sid=5&Fmt=2&clientId=8331&RQT=309&VName=PQD.
Повний текст джерелаYu, Hyungseok. "Performance of cooperative relaying systems with co-channel interference." Diss., Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/45744.
Повний текст джерелаXimenes, Leandro Ronchini. "Tensor-based MIMO relaying communication systems." reponame:Repositório Institucional da UFC, 2015. http://www.repositorio.ufc.br/handle/riufc/12931.
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In cooperative communication systems, two or more transmitting terminals are combined to increase the diversity and/or the power of the signals arriving at a particular receiver. Therefore, even if the devices do not have more than one antenna, or if a significant propaga- tion loss is present between the two communicating nodes, the various transmitting elements can act as a virtual antenna array, thus obtaining the benefits of the multiple antenna (MIMO) systems, especially the increase in the capacity. Recently, tensor decompositions have been introduced as an efficient approach for channel estimation in cooperative com- munication systems. However, among the few works devoted to this task, the utilization of the PARAFAC tensor decomposition for modeling the received signals did not allow the development of techniques for joint symbol and channel estimation. Aiming to avoid the use of pilot sequences, which limits the overall spectral efficiency by dedicating a portion of the bandwidth only for the channel estimation task, the objective of this thesis is to provide new tensor-based strategies, including transmission systems and semi-blind receivers, for one-way two-hop MIMO relaying systems. Based on a Khatri-Rao space-time coding at the source and two different Amplify-and-Forward (AF) relaying strategies, two transmission schemes are proposed. For these systems, named PT2-AF and NP-AF, the received signals at the destination node follow respectively a PARATUCK2 and a nested PARAFAC tensor model. Exploiting uniqueness properties of these tensor models which are established in the thesis, several semi-blind receivers are derived. Some of these receivers are of iterative form us- ing an ALS algorithm, whereas some other ones have closed-form solutions associated with Khatri-Rao factorizations. Some simulation results are finally presented to illustrate the per- formance of the proposed receivers which are compared to some state-of-the-art supervised techniques
Em comunicações cooperativas, dois ou mais terminais de transmissão são combinados para aumentar a diversidade e/ou a potencia dos sinais que chegam a um determinado receptor. Portanto, mesmo que os dispositivos não disponham de mais de uma antena, ou que então haja uma grande perda por propagação entre dois pontos comunicantes, os diversos elementos transmissores podem atuar como um arranjo virtual de antenas, obtendo-se assim vantagens dos sistemas de múltiplas antenas (MIMO), sobretudo o aumento da capacidade de transmissão. Recentemente, a chamada analise tensorial tem se mostrado uma abordagem eficiente então para a estimação de canais em sistemas com diversidade cooperativa. Contudo, nos poucos trabalhos dedicados a essa tarefa, a utilização da decomposição tensorial PARAFAC para a modelagem dos sinais recebidos não possibilitou o desenvolvimento de técnicas de estimação conjunta de canais e símbolos. Com a idéia de se evitar o uso de sequencias de treinamento, que limita a eficiência espectral da transmissão por dedicar uma parte da largura de banda apenas para a tarefa de estimação dos canais, o objetivo desta tese é prover novas estratégias de comunicação, em termos de sistemas de transmissão e receptores semi-cegos, baseados em tensores adaptados a sistemas cooperativos MIMO unidirecionais de dois saltos. Dois sistemas de transmissão são propostos utilizando uma codificação espaço-temporal do tipo Khatri-Rao na fonte e duas estrategias de processamento Amplify-and-Forward (AF) no relay. Para estes sistemas, nomeados PT2-AF e NP-AF, os sinais recebidos no chamado nó de destino satisfazem os modelos tensoriais do tipo PARATUCK2 e Nested PARAFAC. Explorando as propriedades de unicidade destes modelos tensoriais estabelecidas nesta tese, vários receptores semi-cegos são derivados. Alguns destes receptores são do tipo ALS, enquanto outros são de soluções baseadas na factorização de produtos de Khatri-Rao. Resultados de simulação são apresentados para ilustrar os desempenhos dos receptores propostos em comparação a alguns estimadores supervisionados
Budhathoki, Krishna Ram. "Precoder Design for Cooperative Cognitive Radio Systems." University of Akron / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=akron1363180310.
Повний текст джерелаJayasinghe, L. K. (Laddu Keeth Saliya). "Analysis on MIMO relaying scenarios in wireless communication systems." Doctoral thesis, Oulun yliopisto, 2015. http://urn.fi/urn:isbn:9789526207391.
Повний текст джерелаTiivistelmä Tässä väitöskirjassa keskitytään arvioimaan ja parantamaan suorituskykyä useissa moniantennitoistinjärjestelmissä, jotka ovat ajankohtaisia tulevaisuuden langattomissa verkoissa. Erityisesti työssä analysoidaan tärkeitä käytännön tilanteita, sisältäen toistimien sijoittamisen, kanavatiedon saatavuuden, rajoitetun taajuuskaistan ja tiedon salauksen. Aluksi epäkoherentin, vahvistavan ja jatkolähettävän moniantennitoistimen suorituskykyä analysoidaan tilanteessa, jossa toistin on sijoitettu siten, että kohteeseen on suora yhteys. Suorituskyvyn arvioinnin pääkohteena on ortogonaalinen tila-aika-tason lohkokoodattu epäkoherentti vahvistava ja jatkolähettävä moniantennitoistin. Työssä johdetaan tarkat lausekkeet tilastollisille parametreille ja suorituskykymittareille ottaen huomioon hetkellinen signaalikohinasuhde vastaanottimessa. Nämä suorituskykymittarit ilmaisevat, että toistimen ja kohteen välillä oleva vahva suoran yhteyden komponentti rajoittaa sitä suorituskykyä, jota moniantennijärjestelmän hajontaympäristö ennustaa. Työssä tutkitaan myös kahdensuuntaisia moniantennitoistimia, jotka käyttävät fyysisen kerroksen verkkokoodausta. Koodauksesta tulee monimutkaista, kun monia datavirtoja yhdistetään toistimessa. Tämän helpottamiseksi käytetään yhdistettyä esikoodaus-dekoodausmenetelmää, jota tutkitaan erilaisten kanavatietojen tapauksissa. Täydellisen kanavatiedon tapauksessa käytetään nollaanpakotuskriteeriä. Epätäydellisen kanavatiedon tapauksessa käytetään robustia yhdistettyä esikoodaus-dekoodausmenetelmää. Esikoodaus- ja dekoodausmatriisit saadaan ratkaisemalla optimointiongelmat. Nämä ongelmat on muodostettu maksimoimaan summadatanopeus, ja minimoimaan painotettu keskineliövirhe, kun optimointirajoitteina ovat solmujen lähetystehot. Seuraavaksi esikoodaus-dekoodausmenetelmää tutkitaan moniantennijärjestelmässä, jossa käytetään kahdentyyppistä laitteesta-laitteeseen (D2D) kommunikaatiomenetelmää: fyysisen kerroksen verkkokoodaukseen pohjautuvaa D2D- ja suoraa D2D-kommunikaatiota. Yhteissuunnittelu perustuu keskineliövirheen minimointiin, joka on hyödyllistä, kun halutaan vähentää häiriötä ja parantaa molempien verkkojen suorituskykyä. Työssä ehdotetaan hajautettuja ja keskitettyjä algoritmeja tilanteessa, jossa käytetään kaksisuuntaista kommunikaatiota molemmissa verkoissa. Järjestelmän suorituskykyä arvioidaan, kun käytetään kahta eri lähetystilan valintaa, dynaamista ja staattista. Tulokset osoittavat, että fyysisen kerroksen verkkokoodaukseen pohjautuva D2D kasvattaa D2D-kommunikaatiojärjestelmän kantamaa. Lopuksi, turvallisia keilanmuodostustekniikoita arvioidaan fyysisen kerroksen verkkokoodaukseen pohjautuvassa kahdensuuntaisessa moniantennitoistinjärjestelmässä, kun useat salakuuntelijat yritävät siepata käyttäjätiedon. Käyttäjillä on epäideaalinen kanavatieto heidän ja salakuuntelijoiden välisten linkkien kanavista. Kanavatiedon estimointivirheitä arvioidaan ellipsoidisella ja Gauss-Markov-epävarmuusmallilla. Robustit optimointiongelmat, joissa suunnitellaan keilanmuodostusvektorit käyttäjän ja toistimen välille, muodostetaan molemmille malleille. Numeeriset tulokset osoittavat, että ehdotetut algoritmit konvergoituvat nopeasti ja tarjoavat korkeamman turvallisuuden
Zafar, Bilal [Verfasser], Martin Akademischer Betreuer] Harrdt, Andreas [Gutachter] [Mitschele-Thiel, and Ben Slimane [Gutachter] Slimane. "Analysis and Ad-hoc Networking Solutions for Cooperative Relaying Systems / Bilal Zafar ; Gutachter: Andreas Mitschele-Thiel, Ben Slimane Slimane ; Betreuer: Martin Harrdt." Ilmenau : TU Ilmenau, 2014. http://d-nb.info/1178183262/34.
Повний текст джерелаFukuzono, Hayato. "Spatial Signal Processing on Distributed MIMO Systems." 京都大学 (Kyoto University), 2016. http://hdl.handle.net/2433/217206.
Повний текст джерелаBasharati, Sarhad. "MIMO and Relay Systems Based on Multi-Amplitude Minimum Shift Keying." Thesis, University of Canterbury. Electrical and Computer Engineering, 2013. http://hdl.handle.net/10092/8491.
Повний текст джерелаWang, Yufeng. "Opportunistic Scheduling and Cooperative Relaying in Wireless Networks." Scholar Commons, 2012. http://scholarcommons.usf.edu/etd/4416.
Повний текст джерелаWu, Meng [Verfasser]. "Physical-Layer Cooperation in Coded OFDM Relaying Systems / Meng Wu." Aachen : Shaker, 2017. http://d-nb.info/1149269189/34.
Повний текст джерелаRonchini, Ximenes Leandro. "Approches tensorielles pour les systèmes de communication MIMO avec relais." Thesis, Nice, 2015. http://www.theses.fr/2015NICE4009/document.
Повний текст джерелаIn cooperative communication systems, two or more transmitting terminals arecombined to increase the diversity and/or the power of the signals arriving at aparticular receiver. Recently, the so-called tensor analysis has been an efficient approach for channel estimation in systems with cooperative diversity. However, among the few works devoted to this task, the utilization of the PARAFAC tensor decomposition for modeling the received signals did not allow the development of techniques for joint symbol and channel estimation. Aiming to avoid the use of pilot-based sequences, the objective of this thesis is to provide new tensor-based strategies, including transmission systems and semi-blind receivers, for one-way two-hop relaying systems. Based on a Khatri-Rao space-time coding at the source and two different Amplify-and-Forward (AF) relaying strategies, two transmission systems are proposed. For these systems, named PT2-AF and NP-AF, the received signals at the destination node follow respectively a PARATUCK2 and a nested PARAFAC tensor model. Exploiting uniqueness properties of these tensor models which are established in the thesis, several semi-blind receivers are derived. Some of these receivers are of iterative form using an ALS algorithm, whereas some other ones are close-form solutions associated with Khatri-Rao factorizations. Some simulation results are finally presented to illustrate the performance of the proposed receivers which are compared to some state-of-the-art supervised techniques
Sokal, Bruno. "Semi-blind receivers for multi-relaying mimo systems using rank-one tensor factorizations." reponame:Repositório Institucional da UFC, 2017. http://www.repositorio.ufc.br/handle/riufc/25988.
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Cooperative communications have shown to be an alternative to combat the impairments of signal propagation in wireless communications, such as path loss and shadowing, creating a virtual array of antennas for the source. In this work, we start with a two-hop MIMO system using a a single relay. By adding a space-time filtering step at the receiver, we propose a rank-one tensor factorization model for the resulting signal. Exploiting this model, two semi-blind receivers for joint symbol and channel estimation are derived: i) an iterative receiver based on the trilinear alternating least squares (Tri-ALS) algorithm and ii) a closed-form receiver based on the truncated higher order SVD (T-HOSVD). For this system, we also propose a space-time coding tensor having a PARAFAC decomposition structure, which gives more flexibility to system design, while allowing an orthogonal coding. In the second part of this work, we present an extension of the rank-one factorization approach to a multi-relaying scenario and a closed-form semi-blind receiver based on coupled SVDs (C-SVD) is derived. The C-SVD receiver efficiently combines all the available cooperative links to enhance channel and symbol estimation performance, while enjoying a parallel implementation.
Comunicações cooperativas têm mostrado ser uma alternativa para combater os efeitos de propagação do sinal em comunicações sem-fio, como, por exemplo, a perda por percurso e sombreamento, criando um array virtual de antenas para a fonte transmissora. Neste trabalho, toma-se como ponto de partida um modelo de sistema MIMO de dois saltos com um único relay. Adicionando um estágio de filtragem no receptor, é proposta uma fatoração de rank-um para o sinal resultante. A partir deste modelo, dois receptores semi-cegos para estimação conjunta de símbolo e canal são propostos: i) um receptor iterativo baseado no algoritmo trilinear de mínimos quadrados alternados (Tri-ALS) e ii) um receptor de solução fechada baseado na SVD de ordem superior truncada (T-HOSVD). Para este sistema, é também proposto um tensor de codificação espacial-temporal com uma estrutura PARAFAC, o que permite maior flexibilidade de design do sistema, além de uma codificação ortogonal. Na segunda parte deste trabalho, é apresentada uma extensão da fatoração de rank-um para o cenário multi-relay e um receptor semi-cego de solução fechada baseado em SVD's acopladas (C-SVD) é desenvolvido. O receptor C-SVD combina de modo eficiente todos os links cooperativos disponíveis, melhorando o desempenho da estimação de símbolos e de canal, além de oferecer uma implementação paralelizável.
Wu, Meng [Verfasser], Armin [Akademischer Betreuer] [Gutachter] Dekorsy, and Anja [Gutachter] Klein. "Physical-Layer Cooperation in Coded OFDM Relaying Systems / Meng Wu ; Gutachter: Armin Dekorsy, Anja Klein ; Betreuer: Armin Dekorsy." Bremen : Staats- und Universitätsbibliothek Bremen, 2017. http://d-nb.info/1144439310/34.
Повний текст джерелаXiao, Lei. "Cooperative relaying strategies for wireless communication systems." 2008. http://etd.nd.edu/ETD-db/theses/available/etd-12112008-034840/.
Повний текст джерелаThesis directed by Thomas E. Fuja and Daniel J. Costello, Jr. for the Department of Electrical Engineering. "December 2008." Includes bibliographical references (leaves 121-126).
Som, Pritam. "Performance Analysis of Space Shift Keying in Cooperative Relaying Systems." Thesis, 2014. http://etd.iisc.ac.in/handle/2005/4111.
Повний текст джерелаLiao, Yi-Ju, and 廖怡茹. "Relay Selection in Multiuser Two-Way Cooperative Relaying Systems." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/34736920804140567995.
Повний текст джерела國立交通大學
電子研究所
100
In this thesis, we study a relay selection (RS) problem in multi-user two-way cooperative relaying systems which multiuser interference is involved. Different from the most research activities, we investigate a more practical scenario which consists of multiple users, multiple relays and a single destination. Regarding the sources and the destination as the mobile handsets and base station, respectively, this scenario is more similar to communication systems in reality compared with those consisting of only one source and one destination. On the other hand, we take multiuser interference into account, however, it is not the case for the most works. Channel orthogonality is assumed frequently in many studies to avoid interference. Nevertheless, such assumption is not so realistic and degrades the bandwidth efficiency. To be closer to reality or more bandwidth efficient, taking the multiuser interference into consideration is necessary. In our work, we consider a code division multiple access (CDMA) system with non-orthogonal spreading sequences. Since signal to interference-plus-noise ratio (SINR) is a benchmark of communication quality, RS based on maximizing the SINR of worse link is performed in our study. Besides, aiming at mitigating the interference, we consider the design of linear filter at each relay as well. The result shows that the linear filter is similar to minimum mean-square error (MMSE) detectors. Furthermore, we simulate the proposed scheme with several different parameters such as the number of users and relays, and the length of spreading sequences. Also, we compare the proposed relay selection method with random relay selection approach, and the result shows that our proposed method has better performance in terms of the bit error rate.
Tsai, I.-Tse, and 蔡宜澤. "On Fountain Codes for Cooperative Systems UsingVarious Relaying Strategies." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/56842953903610154965.
Повний текст джерела國立中山大學
通訊工程研究所
100
In wireless communication, multipath fading distorts the phase and the amplitude of received signals and increases error rate, which degrades causes communication quality. Multiple-input-multiple-output (MIMO) techniques can be adopted to achieve diversity gain and reduce error rate. However, MIMO is hard to be implemented in mobile devices due to size limitation. With this regard, cooperative communications are proposed to allow users to cooperate each other’s and then achieve diversity without equipping multiple antennas. On the other hand, if source and relays adopt fixed-rate transmission under time-varying wireless channels, it requires timely feedback about channel-information for transmitters to adjust the rate of channel encoder. To reduce overhead required for aforementioned scheme, we adopt rateless fountain codes in cooperative networks. In recent year, most related studies focus on information-theoretical aspect, but it lacks discussion of practical coding. In our work, we use fountain codes in dual-hop cooperative communication and analyse transmission rate in terms of transmitting time. Fountain code was first proposed as Luby transform codes(LTC) for erasure channels. We combine low-density parity-check code( LDPC code) and LTC in cooperative communication networks, and analyze required transmission time under different cooperative protocols.
Liao, Tsung-Hui, and 廖宗輝. "Combined Beamforming and Cooperative Diversity Technologies for Multiple Relaying Systems." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/19869421575366719404.
Повний текст джерела元智大學
通訊工程學系
97
In this thesis, we first develop and analyze a new hybrid cooperative strategy which combines the AF and DF schemes by the channel quality from source to relays. In terms of SNR measurement at relay terminals, the relay will resort to the DF scheme if the channel link is reliable. Otherwise, the relay uses the simple AF scheme for non-reliable channel. The proposed hybrid cooperative technology can fully exploit all relay terminals, and obtain full cooperative diversity order in comparison with the traditional DF scheme. Besides, the simulation result indicates the diversity gain is also better than the traditional AF cooperative strategy. Secondly, for the problem of distributed space-time-coded (STC) cooperative system, we propose a new strategy, which be realized by applying the convolutional channel coding. Based on such STC cooperation, we propose an new asynchronous distributed STC cooperative strategy with the optimal beamforming technology, multiply-constrained minimum variance distortionless response (MC-MVDR). The relays will start cooperation by inserting latency to different time slots. For large frame size, the overall throughput is almost the same as the conventional STC cooperation. Besides, we also derive and analyze the corresponding outage probability at the output of beamformer. The results indicate the more diversity gain can be obtained due to the orthogonal thermal noise at destination. Furthermore, the proposed cooperative strategy can also achieve full diversity.
Selvaraj, M. D. "Performance of cooperative diversity systems with decode and formed relaying." Thesis, 2009. http://localhost:8080/xmlui/handle/12345678/5609.
Повний текст джерелаChen, Bo-Yu, and 陳柏諭. "Analyses of the Relaying Protocol in the Cognitive Two-Way Cooperative Communications Systems." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/n7erbn.
Повний текст джерела中原大學
通訊工程碩士學位學程
105
In this paper, We investigate the performance of a cognitive spectrum sharing system with two-way communication where secondary user assist two-way communication between two primary users by employing two phase cooperative spectrum sharing scheme over Nakagami-m fading channel. Herein, one-end primary user communicates with another primary user with the cooperation of the secondary user in two transmission phase, the relay help to carry out the transmission of the primary users. Between primary users transmission, the secondary user assists their transmission and transmits its own signal by accessing the spectrum based on satisfying the primary system outage constraint. Considering the Nakagami-m fading channel, We derive the expression of the outage probability for both primary and secondary systems. For these expression, We compare it with the other scheme and illustrate that this proposed scheme can offer better spectrum efficiently. Numerical and simulation results validate our theroretical analyses.
Mishra, Anoop Kumar. "Performance Evaluation of Cooperative Relaying Systems with Channel Estimation Error and RF Impairments." Thesis, 2018. http://ethesis.nitrkl.ac.in/9598/1/2018_phd_AKMishra_513EC1002_Performance.pdf.
Повний текст джерела"On Asynchronous Communication Systems: Capacity Bounds and Relaying Schemes." Doctoral diss., 2013. http://hdl.handle.net/2286/R.I.17865.
Повний текст джерелаDissertation/Thesis
Ph.D. Electrical Engineering 2013
Sainath, B. "Optimal Amplify-And-Forward Relaying For Cooperative Communications And Underlay Cognitive Radio." Thesis, 2015. https://etd.iisc.ac.in/handle/2005/2650.
Повний текст джерелаSainath, B. "Optimal Amplify-And-Forward Relaying For Cooperative Communications And Underlay Cognitive Radio." Thesis, 2015. http://etd.iisc.ernet.in/handle/2005/2650.
Повний текст джерела陳冠亨. "Maximum SNR Detection for Selection-Relaying Cooperative System." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/13605564398578078458.
Повний текст джерела國立交通大學
電機學院通訊與網路科技產業專班
96
The cooperative communication is to realize the MIMO system. The optimum receiver is a highly-complex ML receiver. Hence, the major issue is to design a receiver with low complexity at the destination node with comparable performance as that of the ML receiver. Therefore, we design a receiver to combine the received signals at the Destination node under Decode-and-Forward protocol. The proposed scheme uses the threshold-selection Relay and also uses the maximum SNR detection at the Destination node to minimize the effect that Relay made wrong decision. With this proposed scheme, we also try to find out the optimum threshold value of the Relay. Besides, we derive theoretical bit-error-rate (BER) with BPSK signals for the proposed scheme. We also show that the theoretical BER is tight to the simulated results. The high SNR approximation is made to simplify the theoretical BER, from which we could know that the diversity order of the proposed system lies in 1.5~2 which agrees with previous work.
Huang, Hsin-Yin, and 黃欣盈. "Performance Analysis Framework for Wireless Cooperative Relaying System." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/57565908979061905459.
Повний текст джерела國立臺灣海洋大學
通訊與導航工程學系
101
In this paper, an analytical framework for cooperative relaying (dual-hop multi-relaying and direct links) over an in-door composite fading environment is developed. The analytical expressions combined outage and average bit-error-rate (BER) probability are derived and analyzed, in comparison with simulation results, in terms of a variety of log-normal standard deviations and the multi-relay diversity order against the cooperative relaying signal-to-noise (SNR) mean power. Finally, a derived generic closed-form expression for the outage probability based on cooperative dual-hop multi-relaying link, where the asymptotic results and simulations are analyzed with constrained end-to-end power conditions. By utilizing these results, we refine a specific analysis framework combined outage and average error probability using the generality of closed-form expressions. Analytical results demonstrated that our proposed framework will provide a simple and efficient approach for evaluating the impact on shadowing effects, cooperative diversity gain and determining the cooperation power constraint.
Wu, Chia-Hao, and 吳佳壕. "Analytical Closed-forms of Performance Analysis for Cooperative Multi-Relaying System." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/30247753260764295711.
Повний текст джерела國立臺灣海洋大學
通訊與導航工程學系
102
In this thesis, we explicitly derive the closed-form expressions for the probability density function (PDF) and the cumulative distribution function (CDF) of a composite fading(Rayleigh plus Log-normal) channel based on the Max-Mini relay selection scenario under conditioned signal-to-noise (SNR) power constraint on relay link. The performance analysis in terms of outage probability and Bit-Error-Rate (BER) are compared with our proposed probabilistic approach and the Wilkinson approximation, and corroborated with the exact solution (integral form). The analytical result shows that the proposed scheme approaches the exact solution with promised accuracy, leading to an effective framework of performance analysis for cooperative multi-relaying over a generalized fading environment. These results are extensions of the earlier work using distribution function of the log-normal power-sums with Wilkinson method which only considers in generically correlated log-normal fading environment for indoor application. As a consequence, our probabilistic approach provides a generalized performance analysis of cooperative multi-relaying system in both outdoor and indoor radio links.
Bharadwaj, Sachin. "Analysis and Optimization of Cooperative Amplify-and-Forward Relaying with Imperfect Channel Estimates." Thesis, 2013. http://etd.iisc.ac.in/handle/2005/3279.
Повний текст джерелаBharadwaj, Sachin. "Analysis and Optimization of Cooperative Amplify-and-Forward Relaying with Imperfect Channel Estimates." Thesis, 2013. http://hdl.handle.net/2005/3279.
Повний текст джерела