Exact BER analysis of distributed Alamouti's code for cooperative diversity networks
IEEE Transactions on Communications
Coded cooperation in wireless communications: space-time transmission and iterative decoding
IEEE Transactions on Signal Processing
Diversity through coded cooperation
IEEE Transactions on Wireless Communications
Modulation and demodulation for cooperative diversity in wireless systems
IEEE Transactions on Wireless Communications
Distributed space-time-coded protocols for exploiting cooperative diversity in wireless networks
IEEE Transactions on Information Theory
Cooperative diversity in wireless networks: Efficient protocols and outage behavior
IEEE Transactions on Information Theory
IEEE Transactions on Information Theory
Opportunistic source/destination cooperation in cooperative diversity networks
IEEE Transactions on Wireless Communications
ML performance analysis of digital relaying in bi-directional relay channels
Wireless Communications & Mobile Computing
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In this letter, the average bit-error rate (BER) performance is analyzed for uncoded decode-and-forward (DF) cooperative diversity networks. We consider two typical networks:a single-relay cooperative network with the direct source-destination link and a two-relay cooperative network with the direct source-destination link, under dissimilar network settings, i.e., the fading channels of different relay branches may have different variances. We first derive a closed-form approximate average BER expression of binary signallings including noncoherent binary frequency shift keying (BFSK), coherent BFSK, and coherent binary phase shift keying (BPSK), for the single-relay network. We then generalize our analysis to the two-relay network, and a closed-form approximate average BER expression for binary signallings is derived. We also show that our BER expressions can be considered as generalizations of previously reported results in the literature. Throughout our analysis, only one approximation, so-called the piecewise-linear approximation, is made. Simulation results are in excellent agreement with the theoretical analysis, which validates our proposed BER expressions.