Reduced complexity Schnorr-Euchner decoding algorithms for MIMO systems

Author

Guo, Zhan ; Nilsson, Peter

Author_Institution

Dept. of Electroscience, Lund Univ., Sweden

Volume

8

Issue

5

fYear

2004

fDate

5/1/2004 12:00:00 AM

Firstpage

286

Lastpage

288

Abstract

A new reduced-complexity Schnorr-Euchner decoding algorithm is proposed in this letter for uncoded multi-input multi-output systems with q-QAM (q=4,16,...) modulation. Furthermore, a Fano-like metric bias is introduced to the algorithm from the perspective of sequential decoding, as well as an early termination technique. Simulation results show that these modifications reduce the algorithm complexity efficiently, with only a small degradation in bit error rate at high signal to noise ratios.

Keywords

MIMO systems; error statistics; quadrature amplitude modulation; radiocommunication; sequential decoding; Fano-like metric bias; MIMO; QAM modulation; Schnorr-Euchner decoding algorithm; bit error rate; early termination technique; multiinput multioutput system; sequential decoding; signal-noise ratio; Bit error rate; Constellation diagram; Degradation; Gaussian noise; Lattices; MIMO; Maximum likelihood decoding; Quadrature amplitude modulation; Receiving antennas; Transmitting antennas; Lattice decoder; MIMO; SE; Schnorr–Euchner; decoder; multi-input multi-output; sphere decoder; systems;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2004.827376

Filename

1300579