收稿日期: 2015-12-22
修回日期: 2016-01-17
网络出版日期: 2016-07-15
基金资助
863计划项目（2014AA01A707）资助
Interference suppression scheme based on in-band self-backhaul small cell system
Received date: 2015-12-22
Revised date: 2016-01-17
Online published: 2016-07-15
张静雷 , 邱玲 . 基于带内自回传小基站系统的干扰抑制方案[J]. 中国科学院大学学报, 2016 , 33(4) : 548 -553 . DOI: 10.7523/j.issn.2095-6134.2016.04.017
In this paper, an interference suppression scheme is proposed for in-band self-backhaul small cell system,and it adopts a user-centric clustering and partial joint processing model to eliminate co-channel interference.Considering the same radio frequency band is shared by access link and backhaul link, we formulate a problem which jointly optimizes the backhaul link resource allocation and the access link beamforming to maximize the access link throughput.However,it is difficult to find the optimal solution to this protlem.Based on convex relaxation and block coordinated decent method, a suboptimal iterative algorithm is proposed.Simulation results show that the proposed algorithm can adaptively change coordination cluster size according to backhaul rate, balance backhaul loading of small cell base station,and significantly improve the system access link throughput.
Key words： MIMO; CoMP; sparse beamforming; in-band self-backhaul; small cell
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