New Space-Time Coded Transmission Scheme for MIMO Interference Channel

doi:10.13190/j.jbupt.2015.04.023

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2015, Vol. 38 ›› Issue (4): 117-121.doi: 10.13190/j.jbupt.2015.04.023

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New Space-Time Coded Transmission Scheme for MIMO Interference Channel

TIAN Xin-ji^1,2, ZHAO Hong-tu², ZHAO Wen-tao^1,2

1. Opening Project of Key Laboratory of Mine Informatization, Henan Polytechnic University, Jiaozuo 454000, China;
2. School of Computer Science and Technology, Henan Polytechnic University, Jiaozuo 454000, China

Online:2015-08-28 Published:2015-07-03

Abstract

Abstract:

New space-time coded transmission scheme was proposed for multiple input multiple output (MIMO) interference channel with three users. Rate-2 space-time codeword was designed for every user. The unwanted codeword for the last two receivers is aligned through interference alignment pre-coding, and then is eliminated through non-linear operations on the received signals. The unwanted codeword for the first receiver is canceled through unidirectional operational link and non-linear operations. Compared with the existing scheme for the same scene, the proposed scheme improves the transmission efficiency, while keeping the same diversity gain. Simulation shows that, with the same transmission rate, the proposed scheme outperforms the existing scheme.

Key words: multiple input multiple output interference channel, space-time code, pre-coding, interference alignment, transmission efficiency

CLC Number:

TN911.22

TIAN Xin-ji, ZHAO Hong-tu, ZHAO Wen-tao. New Space-Time Coded Transmission Scheme for MIMO Interference Channel[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2015, 38(4): 117-121.

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New Space-Time Coded Transmission Scheme for MIMO Interference Channel

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