多小区系统中基于信漏噪比最大化的分布式协作预编码  

Distributed Cooperative Precoding Based on Maximized Signal to Leakage Plus Noise Ratio in Multicell Systems

作　　者：张瑞[1] 傅洪亮[1] 

机构地区：[1]河南工业大学信息科学与工程学院,郑州450001

出　　处：《电讯技术》2013年第9期1159-1163,共5页Telecommunication Engineering

基　　金：国家自然科学基金资助项目(61271234;61001099);河南工业大学高层次人才基金资助项目(2012BS056)~~

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。To reduce the backhaul overheads and precoding complexity of base station coordination in muhicell systems, the distributed preceding 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 efficiently 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 coordi- nated single cell transmission based on SLNR algorithm. Simulation results show that the proposed strategy gets a good tradeoff between overheads and performance.

关 键 词：多小区协作 信漏噪比 分布式协作预编码 信道状态信息 

分 类 号：TN929.5[电子电信—通信与信息系统]