Title :
Adaptive Modulation In MIMO System with AFE Constraints
Author :
Li, Guocai ; Li, Jun ; Gong, Yaohuan
Author_Institution :
Sch. of Electron. Eng., Univ. of Electron. Sci. & Technol. of China, Chengdu
Abstract :
MIMO (multiple-input multiple-output) configuration is a popular method for high data wireless transmission. In this paper an adaptive modulation scheme for MIMO channels was addressed. Assuming a block fading channel model and perfect knowledge of channel state, we invested adaptive modulation scheme that provides better throughput under the constraints on the power of each antenna analog front-end (AFE) which is the case of applications. Our analysis is based on the convex optimization. Then a low-complexity iterative bit-loading algorithm implementing this solution is also developed. The performance of the scheme is also examined through analysis and simulations
Keywords :
MIMO communication; adaptive modulation; antennas; fading channels; iterative methods; AFE; MIMO system; adaptive modulation scheme; antenna analog front-end; block fading channel model; channel state knowledge; low-complexity iterative bit-loading algorithm; multiple-input multiple-output configuration; wireless transmission; Adaptive arrays; Analytical models; Covariance matrix; Fading; Iterative algorithms; MIMO; Matrix decomposition; Power system modeling; Receiving antennas; Transmitting antennas;
Conference_Titel :
Communications, Circuits and Systems Proceedings, 2006 International Conference on
Conference_Location :
Guilin
Print_ISBN :
0-7803-9584-0
Electronic_ISBN :
0-7803-9585-9
DOI :
10.1109/ICCCAS.2006.284809
