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提出了基于多用户MIMO-OFDM和多用户=MISO- OFDM的两种信号传输预处理技术方案,构建了两方案的系统模型,并依据系统模型推导出了数据发送及检测算法。两方案均可大大降低移动终端的数据检测复杂度。通过在TDD系统应用环境中的仿真,比较了两方案与预瑞克的系统误比特率性能,表明多用户信号传输预处理技术方案有更好的系统误比特率性能。
Two schemes of signal transmission preprocessing based on multi-user MIMO-OFDM and multi-user = MISO-OFDM are proposed, the system model of the two schemes is constructed, and the data sending and detection algorithms are deduced according to the system model. Both solutions can greatly reduce the data detection complexity of the mobile terminal. Through the simulation in the application environment of TDD system, the systematic bit error rate performance of the two schemes and the pre-Rake is compared, which shows that the multi-user signal transmission pre-processing scheme has better systematic bit error rate performance.