为了解决无线通信系统中多输入多输出技术在移动终端的多天线制约问题,一种新的分集技术——协作分集技术被提出。它使得在多用户环境中,具有单根天线的移动台可以共享彼此的天线而产生一个虚拟MIMO系统,从而获得分集增益。LDPC码是一种性能接近Shannon限的线性分组码。文中将LDPC码与编码协作分集结合起来,通过仿真证明可以很好的提高系统的误码率(BER)性能。 In order to solve the multi-antenna control problem of multiple-input multiple-output (MIMO) in mobile terminals in wireless communication systems, a new diversity technique, cooperative diversity, is proposed. It enables a mobile station with a single antenna in a multi-user environment to share one another’s antennas to create a virtual MIMO system to achieve diversity gain. LDPC codes are linear block codes whose performance is close to Shannon limit. In this paper, LDPC codes and coding cooperative diversity are combined to prove that the BER performance of the system can be well improved through simulation.