【摘要】 为了能够减少多小区基站协作时的回传开销和预编码复杂度,研究了基于信漏噪比(SLNR)最大化准则的协作多小区传输分布式预编码算法。多个小区协作传输数据,仅仅需要局部的信道状态信息和用户的数据信息,减少了无线回传开销,得到基站协作带来的性能提高。仿真表明,与协作多小区传输的迫零(ZF)算法和协作单小区传输的SLNR算法相比,协作多小区传输SLNR预编码在开销和性能之间取得了良好的折衷。更多还原

【Abstract】 To reduce the backhaul overheads and precoding complexity of base station coordination in multicell systems,the distributed precoding strategy based on maximizing the signal to leakage plus noise ratio(SLNR) is considered.It only needs the local channel state information(CSI) and the user data,which efficient ly reduces backhaul overheads while enjoys the gain of the base station coordinated transmission.The distributed precoding strategy is compared with coordinated multiple cells transmission based on zero forcing(ZF) algorithm and coord-i nated single cell transmission based on SLNR algorithm.Simulation results show that the proposed strategy gets a good tradeoff between overheads and performance.更多还原