On the Capacity of Underlay Cognitive Radio Networks Over Shadowed Multipath Fading Channels

被引：3
|
作者：
Khoshafa, Majid H. [1 ]
Al-Ahmadi, Saad [1 ]
机构：
[1] King Fahd Univ Petr & Minerals, Elect Engn Dept, Dhahran, Saudi Arabia
来源：
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING | 2017年 / 42卷 / 12期
关键词：
Cognitive radio; Composite fading; Generalized-K (gamma-gamma) model; Primary user; Secondary user; Ergodic capacity; Outage capacity; PERFORMANCE ANALYSIS; ERGODIC CAPACITY; RELAY NETWORKS; SYSTEMS; CONSTRAINTS;
D O I：
10.1007/s13369-017-2688-7
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Cognitive radio is of great interest for current and future wireless communications. In this paper, the capacity of underlay cognitive radio networks is studied where closed-form expressions for both the ergodic capacity and the outage capacity of the secondary user (SU) are derived. The obtained results reveal new details on the joint effect of multipath fading and shadowing on the capacity of the SU where the increase of the ergodic capacity and degradation of the outage capacity due to heavy shadowing are demonstrated and quantified. Furthermore, the analytical results are verified by Monte-Carlo simulations for different fading scenarios.
引用
收藏
页码：5191 / 5199
页数：9
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