Power Allocation Algorithms for ZF-THP Sum Rate Optimization in Multi-user Multi-antenna Systems 


Vol. 37,  No. 9, pp. 753-761, Sep.  2012


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  Abstract

In this paper, we study a power allocation technique for Tomlinson-Harashima precoding (THP) in multi-user multiple input single output (MISO) downlink systems. In contrast to previous approaches, a mutual information based method is exploited for maximizing the sum rate of zero-forcing THP systems. Then, we propose a simple power allocation algorithm which assigns proper power level for modulo operated users. Simulation results show that the proposed scheme outperforms a conventional water-filling method, and it provides similar performance with near optimal method with much reduced complexity.

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  Cite this article

[IEEE Style]

W. Lee, C. Song, S. Lee, K. Lee, J. S. Kwak, I. Lee, "Power Allocation Algorithms for ZF-THP Sum Rate Optimization in Multi-user Multi-antenna Systems," The Journal of Korean Institute of Communications and Information Sciences, vol. 37, no. 9, pp. 753-761, 2012. DOI: .

[ACM Style]

Wookbong Lee, Changick Song, Sangrim Lee, Kilbom Lee, Jin Sam Kwak, and Inkyu Lee. 2012. Power Allocation Algorithms for ZF-THP Sum Rate Optimization in Multi-user Multi-antenna Systems. The Journal of Korean Institute of Communications and Information Sciences, 37, 9, (2012), 753-761. DOI: .

[KICS Style]

Wookbong Lee, Changick Song, Sangrim Lee, Kilbom Lee, Jin Sam Kwak, Inkyu Lee, "Power Allocation Algorithms for ZF-THP Sum Rate Optimization in Multi-user Multi-antenna Systems," The Journal of Korean Institute of Communications and Information Sciences, vol. 37, no. 9, pp. 753-761, 9. 2012.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880