在已知两源节点，中继节点发射功率的前提下，怎样选择放大系数能够得到最大的传输速率-In the known two source node, the relay node to transmit power premise, how to choose the amplification factor can be obtained the maximum transmission rate

In this letter, we propose a simple orthogonal frequency-division multiplexing (OFDM) scheme for an asynchronous cooperative system, where OFDM is implemented at the source node, and time-reversion and complex conjugation are implemented at the rel