Receive signal enhancement in MIMO eigenmode transmission system via sparse approximation

Authors:
Lei Chen;Ju Liu;Lina Zheng
Affiliations:
School of Information Science and Engineering, Shandong University, Jinan, China and National Mobile Communications Research Laboratory, Southeast University, Nanjing, China;School of Information Science and Engineering, Shandong University, Jinan, China and National Mobile Communications Research Laboratory, Southeast University, Nanjing, China;School of Information Science and Engineering, Shandong University, Jinan, China and National Mobile Communications Research Laboratory, Southeast University, Nanjing, China
Venue:
WiCOM'09 Proceedings of the 5th International Conference on Wireless communications, networking and mobile computing
Year:
2009

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Abstract

In this paper, a receive signal enhancement scheme based on signal sparse approximation is proposed to improve the system performance by removing the noise from the receive signal in MIMO Eigenmode Transmission system. We can obtain several independent substreams by multiplying the transmit vector by the matrix V before transmission occurs, and multiplying the receive vector by matrix U* at the receiver. The matrix V and U can be obtained by the singular value decomposition (SVD) of channel matrixH. The proposed approach enhance the signal which is loaded on each substream in parallel and gain the output SNR improvement for improving the performance of MIMO system. Finally, the effectiveness of proposed scheme is verified through computer simulations.