Parallel QRD-M encoder for decentralized multi-user MIMO systems

Manar Mohaisen, Abedelaziz Mohaisen, Yanhua Li, Pengkui Luo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

In this paper, we propose a parallel QRDM encoder (PQRDME) for multi-user MIMO (MU-MIMO) systems. The proposed algorithm transforms the full tree-search problem of the conventional QRDME algorithm into parallel partial trees that are processed in parallel, leading to a tremendous increase in the encoding throughput. The proposed algorithm outperforms the fixed-complexity sphere encoder (FSE) and performs close to the optimum performance for several scenarios. For instance, in a 4x4 MUM-MIMO system, the proposed PQRDME lags the optimum performance by 0.3 dB while outperforming the FSE by 2.3dB at a target BER of 10-4. In this case, the proposed algorithm also doubles the encoding throughput of the conventional QRDME algorithm.

Original languageEnglish (US)
Title of host publication2011 IEEE International Conference on Communications, ICC 2011
DOIs
StatePublished - Sep 2 2011
Event2011 IEEE International Conference on Communications, ICC 2011 - Kyoto, Japan
Duration: Jun 5 2011Jun 9 2011

Publication series

NameIEEE International Conference on Communications
ISSN (Print)0536-1486

Other

Other2011 IEEE International Conference on Communications, ICC 2011
CountryJapan
CityKyoto
Period6/5/116/9/11

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    Mohaisen, M., Mohaisen, A., Li, Y., & Luo, P. (2011). Parallel QRD-M encoder for decentralized multi-user MIMO systems. In 2011 IEEE International Conference on Communications, ICC 2011 [5963389] (IEEE International Conference on Communications). https://doi.org/10.1109/icc.2011.5963389