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Multi-way Communications
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232
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193
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Multi-way communication is a means to significantly improve the spectral efficiency of wireless networks. This book provides an overview of the developments in this research area since it was initiated by Shannon. The basic two-way communication channel is considered first, followed by the two-way relay channel obtained by the deployment of an additional cooperative relay node to improve the overall communication performance. This basic setup is then extended to multi-user systems. For all these setups, fundamental limits on the achievable rates are reviewed, making use of a linear high-SNR deterministic channel model to provide valuable insights which are helpful when discussing in details of the coding schemes for Gaussian channel models. Several tools and communication strategies are used in the process, including computation, signal-space alignment, and nested lattice codes. Finally, extensions of multi-way communication channels to multiple antenna settings are discussed. This book provides a starting point for any researcher or student in understanding this important topic central to wireless communication systems.
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