tailieunhanh - Báo cáo hóa học: " Research Article Performance Analysis of Two-Hop OSTBC Transmission over Rayleigh Fading Channels"

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 Performance Analysis of Two-Hop OSTBC Transmission over Rayleigh Fading Channels | Hindawi Publishing Corporation EURASIP Journal on Wireless Communications and Networking Volume 2010 Article ID 649541 8 pages doi 2010 649541 Research Article Performance Analysis of Two-Hop OSTBC Transmission over Rayleigh Fading Channels Guangping Li 1 Steven D. Blostein 2 and Jiayin Qin3 1 Faculty of Information Engineering Guangdong University of Technology Guangzhou 510006 China 2 Department of Electrical and Computer Engineering Queen s University Kingston ON Canada K7L 3N6 3 Department of Electronic and Communications Engineering Sun Yat-sen University Guangzhou 510275 China Correspondence should be addressed to Steven D. Blostein Received 19 March 2010 Revised 5 July 2010 Accepted 26 September 2010 Academic Editor A. B. Gershman Copyright 2010 Guangping Li et al. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. A two-hop amplify and forward AF relay system is considered where source and destination are each equipped with multiple antennas while the relay has a single antenna. Orthogonal space-time block coding OSTBC is employed at the source. New exact expressions for outage probability in Rayleigh fading as well as symbol error rate SER expressions for a variety of modulation schemes are derived. The diversity order of the system is evaluated. Monte Carlo simulations demonstrate the accuracy of the analyses presented. Results that can be extended to relay systems with a direct source-destination link are also highlighted. To put the results in context the two-hop system performance is then compared to that of a MIMO point-to-point system. Finally the new analysis is applied to evaluate two-hop system performance as a function of relay location. 1. Introduction Through exploiting spatial diversity it is well known that MIMO technology can improve the reliability