A Simplified Adaptive Modulation Scheme for MIMO Spatial Multiplexing Systems

Author

Che, Xiaolin ; He, Chen ; Wang, Dan

Author_Institution

Shanghai Jiaotong Univ., Shanghai

fYear

2007

fDate

22-24 Aug. 2007

Firstpage

503

Lastpage

507

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/CHINACOM.2007.4469439

Filename

4469439