Date Added: Mar 2012
Cooperative communication is shown to be an efficient method of combating fading in wireless networks. By "sharing" their antennas cooperating single-antenna nodes create a virtual multi-antenna system and therefore, benefit from spatial diversity. Network coding being a particular cooperative communication technique provides substantial gains in data rate, especially in networks with many sink nodes. By allowing intermediate nodes of a network to mix the incoming data streams, one can achieve the multicast capacity. Recently, Xiao and Skoglund showed that Binary Network Coding (BNC) is not optimal for multi-user multi-relay networks in terms of diversity and proposed Diversity Network Coding (DNC) scheme that outperforms BNC approach.