Pseudo-Inverse MMSE Based QRD-M Algorithm for MIMO OFDM

Author

Sun, Sumei ; Dai, Yongmei ; Lei, Zhongding ; Kenichi, Higuchi ; Kawai, Hiroyuki

Author_Institution

Inst. for Infocomm Res.

Volume

3

fYear

2006

fDate

7-10 May 2006

Firstpage

1545

Lastpage

1549

Abstract

We propose a pseudo-inverse minimum mean squared error (MMSE) based QR decomposition (QRD) M-algorithm (QRD-M) for multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems. The proposed algorithm can effectively mitigate the detrimental effect of MIMO channel ill-conditions on the bit error rate (BER) performance. As a result, the number of retained branches (M value) can be reduced to half of the original QRD-M algorithm in Kyeong Jin Kim and R.A. Iltis (2002) in order to achieve the same performance for both the uncoded and coded systems. The detection complexity is therefore greatly reduced

Keywords

MIMO systems; OFDM modulation; error statistics; least mean squares methods; MIMO OFDM; MIMO channel ill-conditions; QR decomposition M-algorithm; QRD-M algorithm; bit error rate performance; detection complexity; detrimental effect; multiple-input multiple-output system; orthogonal frequency division multiplexing system; pseudo-inverse MMSE; pseudo-inverse minimum mean squared error; retained branches; Bit error rate; Intersymbol interference; Iterative algorithms; MIMO; Matrix decomposition; Maximum likelihood decoding; OFDM; Receiving antennas; Sun; Wideband;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2006. VTC 2006-Spring. IEEE 63rd

Conference_Location

Melbourne, Vic.

ISSN

1550-2252

Print_ISBN

0-7803-9391-0

Electronic_ISBN

1550-2252

Type

conf

DOI

10.1109/VETECS.2006.1683095

Filename

1683095