Low-complexity transceiver design scheme based on channel null-space feedback  

作　　者：倪吉庆 费泽松 邢成文 匡镜明 

机构地区：[1]School of Information and Electronics,Beijing Institute of Technology

出　　处：《Journal of Beijing Institute of Technology》2012年第2期253-257,共5页北京理工大学学报（英文版）

基　　金：Supported by the Sino-Swedish IMT-Advanced and Beyond Cooperative Program(2008DFA11780)

摘　　要：To reduce the negative impact of channel quantization errors, a low-complexity transceiver joint design scheme for both the transmit beamformers and receive combining vectors is proposed in the two-user multiple-input multiple-output （MIMO） system. In the scheme, the channel nullspace quantization vector is used as the transmit beamformer of the interference user directly based on channel null-space feedback. Since the interference can be determined at the receiver, interference rejection combining （IRC） is jointly utilized to cancel the inter-user interference. Simulation re- sults show that the proposed scheme can provide substantial sum-rate improvement especially at high SNR.To reduce the negative impact of channel quantization errors, a low-complexity transceiver joint design scheme for both the transmit beamformers and receive combining vectors is proposed in the two-user multiple-input multiple-output （MIMO） system. In the scheme, the channel nullspace quantization vector is used as the transmit beamformer of the interference user directly based on channel null-space feedback. Since the interference can be determined at the receiver, interference rejection combining （IRC） is jointly utilized to cancel the inter-user interference. Simulation re- sults show that the proposed scheme can provide substantial sum-rate improvement especially at high SNR.

关 键 词：limited feedback channel null-space quanttzation interference rejection combining 

分 类 号：TN859[电子电信—信息与通信工程]