Title :
A Simplified Adaptive Modulation Scheme for MIMO Spatial Multiplexing Systems
Author :
Che, Xiaolin ; He, Chen ; Wang, Dan
Author_Institution :
Shanghai Jiaotong Univ., Shanghai
Abstract :
In this paper, a simplified adaptive modulation (AM) scheme is presented for MIMO spatial multiplexing systems to improve the bit error rate (BER) performance. Constrained to total data rate and equal power allocated to each transmit antenna, an efficient AM algorithm is described to minimize the average BER of the system. The performances of vertical Bell labs layered space-time (V-BLAST) structure combined with the presented AM scheme are investigated. Simulation results have shown that the presented scheme can provide superior performances over the original V-BLAST system under perfect and imperfect channel state information (CSI).
Keywords :
MIMO communication; adaptive modulation; multiplexing; MIMO spatial multiplexing systems; adaptive modulation scheme; bit error rate; channel state information; vertical Bell labs layered space-time structure; Bit error rate; Channel state information; Feedback; MIMO; Power amplifiers; Receiving antennas; Signal to noise ratio; System performance; Transmitters; Transmitting antennas; MIMO; adaptive modulation; spatial multiplexing;
Conference_Titel :
Communications and Networking in China, 2007. CHINACOM '07. Second International Conference on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-1009-5
Electronic_ISBN :
978-1-4244-1009-5
DOI :
10.1109/CHINACOM.2007.4469439
