Title :
Reduced complexity Schnorr-Euchner decoding algorithms for MIMO systems
Author :
Guo, Zhan ; Nilsson, Peter
Author_Institution :
Dept. of Electroscience, Lund Univ., Sweden
fDate :
5/1/2004 12:00:00 AM
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;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2004.827376
