Coded Cooperation with Permutation and Block Encoding for Wireless Networks

A novel coded cooperation scheme based on the intersection of interleaved block codes is proposed for multisource multi-relay networks. Specifically, the multiple source data are jointly encoded and forwarded to the destination by multiple cooperative relays while the sources and relays have low complexity. In this way, a distributed coding scheme with permutation and block encoding is constructed to achieve diversity and coding gains simultaneously. The scheme can achieve significant performance gain over direct transmission and fit for cooperative networks with different number of sources or relays.

I. Introduction

Node cooperation based on the broadcast nature of wireless communications can achieve diversity gain to decrease the susceptibility to channels variations by sharing the resources of different nodes in the networks [1]. Cooperative communications have potential applications in practical wireless networks such as wireless ad hoc networks and sensor networks. Cooperative communications with multiple nodes such as multiple sources or multiple relays, which may provide freedom to design efficient and flexible cooperative transmission schemes, are arousing wide interests recently [2]–[6].