标题：Instantaneous combining loss of EGC schemes over Nakagami-m fading channels
作者：Wang, Deqiang ;Cao, Yewen
作者机构：[Wang, Deqiang ;Cao, Yewen ] School of Information Science and Engineering, Shandong University, Jinan, Shandong Province 250100, China
会议名称：2011 IEEE 13th International Conference on Communication Technology, ICCT 2011
会议日期：25 September 2011 through 28 September 2011
来源：International Conference on Communication Technology Proceedings, ICCT
关键词：Combining loss; equal-gain combining; Nakagami-m fading channel
摘要：This paper focuses on the performance evaluation of existing predetection equal-gain combining (EGC) schemes. We firstly propose a baseline EGC scheme which theoretically maximizes the instantaneous output signal to noise ratio at any time instant. A new metric, called instantaneous combining loss (ICL), is then defined to indicate combining loss and/or rejecting loss of various EGC schemes quantitatively. We prove that all existing EGC schemes suffer from ICL unavoidably in fading channels. Simulations have been carried out to evaluate the ICL performance of different EGC schemes over Nakagami-m fading channels. Numerical results provide new insights into the performance of existing EGC schemes. © 2011 IEEE.