An AF relay system usually treats the transmitting, relay, together with the receiving as equivalent channel for channel estimations. It is very important to establish a reasonable channel model to simulate the actual scene. In this paper, a novel cooperative channel model framework is proposed for cooperative multiple-input multiple-output (MIMO) wireless channels. The proposed model framework is adaptable to multiple cooperative MIMO scenarios when the relay's mode is Amplify-and-forward. Given the information of correlation coefficient of transmitting, relay and receiving and the information of Mean and variance of Rayleigh channel, we can simulate the equivalent channel. Matlab simulations show that the equivalent channel is reasonable and the presented channel model can imitate the characters of the AF channel.
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