An Utilizing-Interference and Increasing-Capacity Precoding with Low Complexity

doi:10.13190/jbupt.200905.114.372

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2009, Vol. 32 ›› Issue (5): 114-118.doi: 10.13190/jbupt.200905.114.372

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An Utilizing-Interference and Increasing-Capacity Precoding with Low Complexity

XIE Fang,YUAN Chao-wei,CHENG Tie-zheng

(School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China)

Received:2009-02-19 Revised:2009-08-17 Online:2009-10-28 Published:2009-10-28
Contact: YUAN Chao-wei

Abstract

Abstract:

A precoding method utilizing interference is proposed in multiple-input multipl
e-output broadcasting system (MIMO BC) in which each receiver has one antenna. This method turns a multi-user system into a number of independent two-user or one-user systems. In two-user system a new model based on vector is established，and with the objective of maximizing system capacity the optimal precoding vectors and power allocation are derived. Simulations show that the proposed method has the similar capacity with minimum mean square error (MMSE) precoding but reduces complexity with about one-third of MMSE's complexity.

Key words: multiple input multiple output broadcasting system, precoding, interference, capacity, complexity

XIE Fang,YUAN Chao-wei,CHENG Tie-zheng. An Utilizing-Interference and Increasing-Capacity Precoding with Low Complexity[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2009, 32(5): 114-118.

References

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An Utilizing-Interference and Increasing-Capacity Precoding with Low Complexity

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