协作多小区MISO干扰消除自适应比特分配算法  

Adaptive Bit Allocation Algorithm for MISO Interference Cancellation in Cooperative Multi-cell Systems

作　　者：郭荣新[1] 袁继昌[1] 

机构地区：[1]华侨大学信息科学与工程学院,福建厦门361021

出　　处：《山西大学学报（自然科学版）》2013年第3期404-409,共6页Journal of Shanxi University(Natural Science Edition)

基　　金：国家自然科学基金(61201264);福建省自然科学基金(2011J05152);厦门市科技计划项目(3502Z20123035);泉州市重大科技专项(2011ZD01GO1)

摘　　要：针对两小区MISO有限反馈系统中的小区间干扰消除问题,分析了部分信道状态信息下最大化信漏噪比和迫零波束形成在不同比特分配算法下的系统性能.通过使用两个独立的随机矢量量化(RVQ)码本分别量化期望信道和干扰信道,计算单用户下由量化误差导致的速率损失,再把速率损失限定在一定的范围内,进而对比特在期望基站和干扰基站之间的分配提出了一种新的自适应分配算法.仿真的结果表明与等比特分配算法相比该算法能够获得更优的系统性能.The problem of inter-cell interference cancellation was investigated in two-cell MISO limited feedback system.We analyze the performance of zero-forcing beamforming and signal to leakage and noise ratio beamforming with partial channel state information under different bits allocation algorithm We investrigate two independent random vector quantization codebooks to quantize the desired channel and the interference channel respectively.Then,we calculate the mean loss in rate due to quantization error for the single user.Thereby,a novel adaptive bits allocation algorithm between the desired base station and the interference base station was proposed by limiting the mean loss in rate within a certain range.The simulation results demonstrate that the novel adaptive bits allocation algorithm can achieve a better system performance compared with the equal bits allocation algorithm.

关 键 词：小区间干扰 波束形成 比特分配 有限反馈 

分 类 号：TN911.7[电子电信—通信与信息系统]