摘要
为提高现有的Co MP下行链路的反馈能力,降低反馈开销,利用匹配滤波器原理、采用认知的思想方法来判断使用合理的协作传输结构,同时利用基于信号干扰噪声比(SINR)反馈开销方案代替CQI信息以降低信息的反馈量,从而进一步减少反馈信息量化误差。仿真结果证明,改进后的反馈开销方案相比传统方案,在提升反馈信息精确度的基础上,进一步减小了反馈开销。
The theory of matched filter and the ideas of the cognitive approach are used to determine the cooper- ative transmission structure in order to improve the feedback ability of the existing CoMP downlink link and reduce the feedback overhead. The substitution of the interference signal noise ratio （SINR） feedback overhead solution for the CQI information reduces the amount of feedback information, and further reduces the quantization error of feedback information. Simulation shows that the improved feedback scheme further reduces the feedback overhead compared with the traditional scheme of feedback in raising accuracy.
出处
《电子科技》
2014年第12期142-146,共5页
Electronic Science and Technology
基金
国家自然科学基金资助项目(61102047)
陕西省自然科学基金资助项目(2011JQ8027)
关键词
协作多点传输
几何因子
有限反馈系统
信号干扰噪声比
coordinated multi-point transmission
geometrical factor
limited feedback system
the interfer-ence signal to noise ratio
