Outage Probability Analysis of Coded Cooperative Communication

Cooperative communication was proposed for wireless networks such as cellular network and wireless ad-hoc networks to meet the rapid increase in the data rate. Coded cooperative communication is one of the co-operative system, in which cooperation is combined with the channel coding. Coded cooperation is a promising technology to improve the outage performance of the system

Outage Probability of Decentralized Coded User Cooperation in Wireless Communications

In this article, the outage probability as a standard metric for evaluating the performance of a distributed (or decentralized) Reed-Solomon (R-S) coded cooperative communication system is presented. In this system, the users’ codewords are split into two frames and are transmitted via two independent fading paths. The first is directly to the destination while the second frame is transmitted via a relaying partner, also to the destination. The outage probability expressions here derived further prove that the R-S coded scheme achieves full diversity. Moreover, the comparisons under different source-partner and source-destination channel conditions made with the centralized Rate Compatible Punctured Convolutional (RCPC) coded cooperative scheme show that the decentralized R-S coded scheme outperforms the centralized RCPC cooperative scheme. Keywords: coded cooperation, cooperative diversity, outage probability, fading channel, source, partne

Maximizing signal to leakage ratios in MIMO BCH cooperative beamforming scheme

Beamforming (BF) technique in cooperative multiple input multiple output (MIMO) antenna arrays improves signal to noise ratio (SNR) of the intended user. The challenge is to design transmit beamforming vectors for every user while limiting the co-channel interference (CCI) from other users. In this paper, we proposed cooperative beamforming based on Signal-to-Leakage Ratio (SLR) to exploit the leakage power as a useful power in the second time slot after user cooperation, for this purpose successive interference cancellation (SIC) is employed in each user to separate the leakage signal from the desired signal. Without increasing the complexity, Maximizing Signal-to-Leakage Ratio (SLR) subject to proposed power constraint instead of a unity norm is the way to achieve extra leakage power. To reduce the erroneous, Bose–Chaudhuri–Hocquenghem (BCH) codes employed in Beamforming of (SIC) cooperative scheme BF(CS-SIC-BCH). Maximum-likelihood (ML) estimator method is used at each user receiver. Simulation results show that the performance of the proposed scheme BF (CS-SIC-BCH) over Rayleigh and Rician fading channel is significantly better than the performance beamforming based on SLR in Non-cooperative system. More specifically to achieve a BER of about the required SNR for the proposed scheme is about 1 dB less than the Non-cooperative system