Throughput Adaptation and Traffic Ratio Control in Cooperative Relay Networks with Network Coding and Asymmetric Traffic

Adaptive traffic ratio control (ATRC) with hybrid network coding and cooperative relaying is proposed to improve the overall throughput in an asymmetric data traffic network. The scheme is used in conjunction with adaptive transmission protocol and relay selection based on instantaneous channel state information. Simulation results show that (i) ATRC provides better trade-off between achieved throughput and traffic ratio and (ii) both maximum throughput and guaranteed traffic ratio can be simultaneously achieved by ATRC as offered traffic approaches symmetric.