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在多基站协作通信系统中,为了获得空间分集或复用增益,协作基站同时同频向多个终端发送数据,而终端同时同频收到多个具有不同频偏的信号.基站或终端不能通过预补偿或后补偿方法独立解决多基站多用户频偏补偿问题.针对这一难题,本文提出基于最大可容忍剩余频偏的收发联合补偿策略.仿真结果表明:该策略虽然不能完全消除多基站多用户频偏,但可将其控制在可容忍范围内.
In a multi-BS cooperative communication system, in order to obtain space diversity or multiplexing gain, a coordinated base station sends data to multiple terminals at the same time and at the same time, and the terminal receives multiple signals with different frequency offsets at the same time and at the same time. The base station or the terminal can not pass Pre-compensation or post-compensation method solves the problem of multi-base station multi-user frequency offset compensation independently.According to this problem, this paper proposes a joint compensation strategy based on the maximum tolerable residual frequency offset.The simulation results show that although this strategy can not completely eliminate the multi-base station User frequency offset, but can be controlled within the tolerable range.