Title :
A Review of Sphere Decoding for MIMO Systems and Its Improvement
Author_Institution :
Chien-Shiung Wu Coll., Southeast Univ., Nanjing, China
Abstract :
The sphere decoding algorithm for signal transmitted on multiple antennas channel is considered. In this paper, the preprocessing stage is analyzed in order to seek a reduced complexity and some improvements are made to enhance the performance. The computer simulation results show that the improved algorithm by applying Pohst Enumeration with selected initial radius is more efficient than that by applying Schnorr-Euchner Enumeration. For example, the average floating-point operations in 6 × 6 MIMO using 64-QAM modulation reduces 71% compared with SE enumeration.
Keywords :
MIMO communication; decoding; quadrature amplitude modulation; wireless channels; MIMO Systems; QAM modulation; Schnorr-Euchner enumeration; multiple antennas channel; sphere decoding; Algorithm design and analysis; Complexity theory; Lattices; MIMO; Maximum likelihood decoding; Modulation;
Conference_Titel :
Wireless Communications Networking and Mobile Computing (WiCOM), 2010 6th International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-3708-5
Electronic_ISBN :
978-1-4244-3709-2
DOI :
10.1109/WICOM.2010.5600976
