The Simulation and Analysis of Three Cooperative Diversity Schemes

In the wireless network, cooperative diversity has proved itself an effective technology to enhance the performance of system. For the two-user cooperative communication system model, this paper gives a detailed analysis on three kinds of conditional cooperative diversity schemes which include the amplification and forward, decode and forward and coded cooperation; It also shows the simulation model of cooperative communication in the form of graphs, describing the specific cooperative process; and it has a research on the performance of three cooperative diversity communication system with LDPC codes under the conditions of selective cooperation. Simulation results show that: Selective cooperation can reduce the processing complexity of the base station and cooperative users, so that the overall system performance is improved.