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IEICE TRANSACTIONS on Communications

Simple Precoding for QR-Decomposition MLD Incorporated with PIC in MIMO-OFDM Systems

Masaaki FUJII

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Summary :

A precoding scheme is described for multiple-input and multiple-output orthogonal frequency-division multiplexing systems with a QR-decomposition maximum likelihood detector (MLD) incorporated with a parallel interference canceller (PIC) at a receiver. Transmit antenna ranking based on received substream signal power or per-substream minimum Euclidean distances is fed back to a transmitter. Based on the ranking information, precoding matrices are determined as permutation matrices such that specific packets are transmitted from transmit antennas with higher channel quality over the whole subcarriers. The simulation results demonstrated that precoding effectively utilizes PIC by reducing the possibility that all substreams are incorrectly decoded and thus improves the transmission performance of a QR-decomposition MLD with PIC.

Publication
IEICE TRANSACTIONS on Communications Vol.E90-B No.5 pp.1266-1269
Publication Date
2007/05/01
Publicized
Online ISSN
1745-1345
DOI
10.1093/ietcom/e90-b.5.1266
Type of Manuscript
LETTER
Category
Wireless Communication Technologies

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