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http://dx.doi.org/10.7840/KICS.2011.36A.9.784

A Limit-Phase-Feedback-based Precoding Technique for CoMP  

Kim, Tae-Young (건국대학교 전자정보통신공학부 무선이동통신 연구실)
Yoon, Eun-Chul (건국대학교 전자정보통신공학부 무선이동통신 연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.36, no.9A, 2011 , pp. 784-789 More about this Journal
Abstract
In this paper, a precoder based on limited phase feedback is proposed to maximize user's receive signal-to-interference-plus-noise ratio (SINR) in coordinated multi-point (CoMP) coordinated scheduling / coordinated beamforming (CS/CB) precoding matrix indicator (PMI) scenario. Most conventional precoding techniques based on limited phase feedback have been considered in a single-cell environment. However, considering neighboring cells in a multi-cell environment, we enhance the conventional preocoding. method. First, to maximize receive SINR, precoding matrices are designed to maximize the serving cell's signal and to minimize the coordinated cells' signal. Also, a precoder which can be used in a limited bit feedback condition is suggested. Finally, the proposed precoder's performance is evaluated and compared with some other precoding techniques by using simulation under the CoMP CS/CB PMI scenario.
Keywords
Coordinated Multi-point (CoMP); Precoding Matrix Indicator (PMI); Outercell interference; SINR maximization; Phase feedback;
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