Path Diversity with a New Coded Cooperation Scheme over Multi-hop Wireless Channels

A new coded cooperation scheme is proposed to efficiently enhance the error correction capability for multi-hop path diversity. In this scheme, an intelligent coding scheme is used to generate correlated codewords delivered over multiple paths. The codeword over each path is self decodable to efficiently prevent error accumulation along the path. In the case of decoding failure in the intermediate nodes, different from conventional schemes, the intermediate nodes continue forward irrecoverable codeword to the destination instead of dropping it. This correlated codeword, when combined with other codewords from different paths at the destination, enables the receiver to recover large errors. The simulations are used to verify the effectiveness of the proposal scheme.