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Power Loss Analysis of Block Tomlinson-Harashima Precoder for Multi-user MIMO Systems  

Kim, Joon-Doo (Yonsei University)
Lee, Chung-Yong (Yonsei University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.49, no.8, 2012 , pp. 12-18 More about this Journal
Abstract
In this paper, we propose an improved analysis of transmission power of BTHP applied into the downlink multi-user (MU) multi-input multi-output (MIMO) system. On the contrary to the conventional analysis that adopts the strong interference assumption for every users in the system, the proposed analysis approximates the characteristics of the actual interference components so that provides more accurate approximation of the transmission power than that from the conventional analysis. By computer simulations, it is observed that the proposed approximation is more accurate than the conventional one, especially in the case of 4-QAM modulation.
Keywords
multi-user MIMO; downlink; block Tomlinson-Harashima precoding; transmission power;
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