Diversity order for amplify-and-forward dual-hop systems with fixed-gain relay under Nakagami fading channels

Authors:
Feng Xu;Francis C. M. Lau;Dian-Wu Yue
Affiliations:
Alcatel Lucent Shanghai Bell Enterprise Communications Co. Ltd., China and College of Inf. Science and Techn., Dalian Maritime Univ., Dalian, China and Dept. of Electronic and Inf. Eng., The Hong ...;Department of Electronic and Information Engineering, The Hong Kong Polytechnic University, Hong Kong;College of Information Science and Technology, Dalian Maritime University, Dalian, China and National Mobile Communications Research Laboratory, Southeast University, Nanjing, China
Venue:
IEEE Transactions on Wireless Communications
Year:
2010

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Abstract

Dual-hop transmission systems employing fixed-gain amplify-and-forward (AF) relaying have been studied recently over Nakagami fading channels. These analyses, however, either have imposed certain constraints on the fading parameters or have not been totally accurate when evaluating the diversity order of the systems. In this letter, we will develop a methodology for evaluating the diversity order of such systems. The methodology can be easily extended to analyze fixed-gain AF relaying with multiple relays.