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We study network-coded receiver cooperation for a wireless system comprising a remote sender and a set of local receivers. Network codes based on GF(2q) random-mixing are complex and prone to errors. Sparse binary random-mixing is considerably simpler, but for it to be space-preserving requires the involvement of a huge number of source packets (vectors). We propose a novel strategy of offset sparse...
Cooperative diversity enables single-antenna terminals in a multi-user environment to share their antennas so as to form a virtual antenna array and achieve spatial diversity in a distributed fashion. To improve the bandwidth efficiency of classical scheme, a novel cooperative diversity scheme based on space-time coding is proposed in this work. With the selection decode-and-forward (SDF) relaying...
We consider user cooperation in a relay network that comprises a large collection of transmitters sending wireless data to a common receiver. A new framework exploiting the network coding technology, referred to as adaptive network coded cooperation (ANCC), is proposed to combat the lossy nature of wireless links and to adapt to the changing network topology. The central idea is to match network-on-graph,...
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