Interference-aware uplink transmission schemes for multicell MIMO system  

作　　者：LI Liang QIU Ling WEI Guo 

机构地区：[1]Wireless Information Network Laboratory,University of Science and Technology of China,Hefei 230027,China

出　　处：《The Journal of China Universities of Posts and Telecommunications》2012年第1期11-17,共7页中国邮电高校学报（英文版）

基　　金：supported by Chinese Important National Science and Technology Specific Project (2010ZX03002-003-01)

摘　　要：In this paper we consider interference-aware uplink transmission schemes for multicell multiple-input multiple-output （MIMO） system. Unlike conventional transmission schemes without considering the interference probably caused to other cell, we jointly optimize the transceiver beamforming vectors to maximize the desired signals while removing the intercell interference. Specifically, for a two-cell system where each transmitter is equipped with two antennas, we derive the closed-form expression for the transmit scheme called coordinated beamforming （CBF） via generalized-eigen analysis. Moreover, when asymmetric interference is considered, we give a balancing beamforming （BBF） scheme where the interfering transmitter is to strike a compromise between maximizing the desired signal and minimizing the generated interference. Simulation results show that both schemes perform better than conventional schemes under different scenarios.In this paper we consider interference-aware uplink transmission schemes for multicell multiple-input multiple-output （MIMO） system. Unlike conventional transmission schemes without considering the interference probably caused to other cell, we jointly optimize the transceiver beamforming vectors to maximize the desired signals while removing the intercell interference. Specifically, for a two-cell system where each transmitter is equipped with two antennas, we derive the closed-form expression for the transmit scheme called coordinated beamforming （CBF） via generalized-eigen analysis. Moreover, when asymmetric interference is considered, we give a balancing beamforming （BBF） scheme where the interfering transmitter is to strike a compromise between maximizing the desired signal and minimizing the generated interference. Simulation results show that both schemes perform better than conventional schemes under different scenarios.

关 键 词：interference-aware MIMO system coordinated beamforrning interference alignment 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置] TN914.5[自动化与计算机技术—控制科学与工程]