tailieunhanh - báo cáo hóa học:" Research Article On Optimum End-to-End Distortion in MIMO Systems"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article On Optimum End-to-End Distortion in MIMO Systems | Hindawi Publishing Corporation EURASIP Journal on Wireless Communications and Networking Volume 2009 Article ID 383945 19 pages doi 2009 383945 Research Article On Optimum End-to-End Distortion in MIMO Systems Jinhui Chen1 and Dirk T. M. Slock EURASIP Member 2 1 Research Innovation Center Alcatel-Lucent Shanghai Bell 388 Ningqiao Road Pudong Shanghai 201206 China 2 Department of Mobile Communications EURECOM 193 06904 Sophia-Antipolis Cedex France Correspondence should be addressed to Jinhui Chen Received 16 February 2009 Revised 10 October 2009 Accepted 21 December 2009 Recommended by Constantinos B. Papadias This paper presents the joint impact of the numbers of antennas source-to-channel bandwidth ratio and spatial correlation on the optimum expected end-to-end distortion in an outage-free MIMO system. In particular based on an analytical expression valid for any SNR a closed-form expression of the optimum asymptotic expected end-to-end distortion valid for high SNR is derived. It is comprised of the optimum distortion exponent and the multiplicative optimum distortion factor. Demonstrated by the simulation results the analysis on the joint impact of the optimum distortion exponent and the optimum distortion factor explains the behavior of the optimum expected end-to-end distortion varying with the numbers of antennas source-to-channel bandwidth ratio and spatial correlation. It is also proved that as the correlation tends to zero the optimum asymptotic expected end-to-end distortion in the setting of correlated channel approaches that in the setting of uncorrelated channel. The results in this paper could be performance objectives for analog-source transmission systems. To some extent they are instructive for system design. Copyright 2009 J. Chen and D. T. M. Slock. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in