tailieunhanh - Báo cáo hóa học: "Research Article Outage Performance Analysis of Cooperative Diversity with MRC and SC in Correlated Lognormal 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 Outage Performance Analysis of Cooperative Diversity with MRC and SC in Correlated Lognormal Channels | Hindawi Publishing Corporation EURASIP Journal on Wireless Communications and Networking Volume 2009 Article ID 707839 7 pages doi 2009 707839 Research Article Outage Performance Analysis of Cooperative Diversity with MRC and SC in Correlated Lognormal Channels D. Skraparlis V. K. Sakarellos A. D. Panagopoulos and J. D. Kanellopoulos Wireless Satellite Communications Group Division of Information Transmission Systems and Materials Technology School of Electrical and Computer Engineering National Technical University of Athens 9 Iroon Polytechniou Street Zografou 15780 Athens Greece Correspondence should be addressed to D. Skraparlis dsk@ Received 31 October 2008 Revised 5 April 2009 Accepted 16 June 2009 Recommended by Laura Cottatellucci The study of relaying systems has found renewed interest in the context of cooperative diversity for communication channels suffering from fading. This paper provides analytical expressions for the end-to-end SNR and outage probability of cooperative diversity in correlated lognormal channels typically found in indoor and specific outdoor environments. The system under consideration utilizes decode-and-forward relaying and Selection Combining or Maximum Ratio Combining at the destination node. The provided expressions are used to evaluate the gains of cooperative diversity compared to noncooperation in correlated lognormal channels taking into account the spectral and energy efficiency of the protocols and the half-duplex or full-duplex capability of the relay. Our analysis demonstrates that correlation and lognormal variances play a significant role on the performance gain of cooperative diversity against noncooperation. Copyright 2009 D. Skraparlis 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. 1. Introduction Cooperative diversity systems .