Block Tomlinson-Harashima Precoding with Vector Perturbation for Multiuser MIMO Downlink

Joondoo KIM  Jiwon KANG  Chungyong LEE  

Publication
IEICE TRANSACTIONS on Communications   Vol.E94-B   No.1   pp.355-358
Publication Date: 2011/01/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E94.B.355
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technologies
Keyword: 
downlink multi-user MIMO,  block Tomlinson-Harashima precoding,  vector perturbation,  

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Summary: 
We propose a multiuser MIMO precoding algorithm that combines the block Tomlinson-Harashima precoding and the vector perturbation (BTHP-VP). BTHP-VP supports multi-stream transmission without additional estimation of each user's effective channel and achieves full spatial diversity. Computer simulations show that BTHP-VP can achieve similar sum rate and improved BER performance compared to the BTHP with maximum likelihood receiver.