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We propose a novel cooperative diversity using multilevel coded modulation which can perform with arbitrary number of cooperative nodes. The proposed multilevel coded cooperation makes use of a signal superposition, which is one form of analog network coding techniques. Due to the ability and flexibility of a multilevel coded modulation, the proposed multilevel coded cooperation can outperform not...
In this paper, the bit-interleaved convolutionally coded differential phase shift keying (DPSK) in combination with cyclic delay diversity (CDD) is theoretically analyzed in terms of pairwise error probability (PEP). We show that bit-interleaved coded DPSK with CDD can achieve full spatial and frequency diversity offered by the frequency selectivity of wireless channel conditioned that the minimum...
The use of the spatial diversity is known to greatly improve the performance over the quasi-static wireless channel. In this paper, we propose a new coded cooperation protocol based on rate-compatible turbo codes. We consider the communication scenario to take place between clusters of nearby nodes with single antenna and demonstrate by a simple example that the diversity gain may be realized by using...
Cyclic delay diversity (CDD) exploits the principle of the orthogonal frequency division multiplexing (OFDM) that transforms the delay spread into the frequency selectivity. In order to investigate the performance of the CDD, OFDM in combination with bit-interleaved coded differential phase shift keying (DPSK) is theoretically analyzed in terms of pairwise error probability (PEP). We show that bit-interleaved...
For a TCP/IP based next generation wireless networks, a conventional layered design is not optimum because it is not considering mobile propagation characteristics. Cross-layer design is the one of the most efficient alternate network architectures. In order to improve the throughput, hybrid SMD (symbol mapping diversity) technique has been proposed. Hybrid SMD technique is based on cross-layer design...
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