On the Ergodic Capacity of Underlay Cognitive Dual-Hop AF Relayed Systems Under Non-Identical Generalized-K Fading Channels

被引：9
|
作者：
Miridakis, Nikolaos I. [1 ]
机构：
[1] Piraeus Univ Appl Sci, Dept Comp Syst Engn, Aegaleo 12244, Greece
来源：
IEEE COMMUNICATIONS LETTERS | 2015年 / 19卷 / 11期
关键词：
Amplify-and-Forward (AF); cognitive systems; ergodic capacity; generalized fading channels; performance analysis; PERFORMANCE ANALYSIS; CONSTRAINTS; NETWORKS;
D O I：
10.1109/LCOMM.2015.2475739
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
The ergodic capacity of underlay cognitive (secondary) dual-hop relaying systems is analytically investigated. Specifically, the amplify-and-forward transmission protocol is considered, while the received signals undergo multipath fading and shadowing with non-identical statistics. To efficiently describe this composite type of fading, the well-known generalized-K fading model is used. New analytical expressions and quite accurate closed-form approximations regarding the ergodic capacity of the end-to-end communication are obtained, in terms of finite sum series of the Meijer's-G function. The analytical results are verified with the aid of computer simulations, while useful insights are revealed.
引用
收藏
页码：1965 / 1968
页数：4
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