Performance Analysis of OFDM-IM-based Cooperative Relaying Protocol for Cognitive Radio Networks

被引：0
|
作者：
Ma Qianli [1 ]
Li Zhiming [1 ]
Yang Ping [1 ]
Xiao Yue [1 ,2 ]
机构：
[1] Univ Elect Sci & Technol China, Natl Key Lab Sci & Technol Commun, Chengdu 611731, Sichuan, Peoples R China
[2] Southeast Univ, Natl Mobile Commun Res Lab, Nanjing 210096, Jiangsu, Peoples R China
来源：
JOURNAL OF ELECTRONICS & INFORMATION TECHNOLOGY | 2017年 / 39卷 / 08期
基金：
中国国家自然科学基金;
关键词：
Cognitive Radio (CR); Cooperative relaying; Orthogonal Frequency Division Multiplexing (OFDM); Index Modulation (IM);
D O I：
10.11999/JEIT161265
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A novel two time slots Orthogonal Frequency Division Multiplexing-Index Modulation (OFDM-IM)aided cooperative relaying protocol is proposed for Cooperative Cognitive Radio Networks (CCRN). In the proposed scheme, OFDM-IM technique is used at the Secondary User (SU) to split the transmission space into the signal constellation domain and the index domain. Specifically, the Secondary Transmitter (ST) of SU acts as a Decode-and-Forward (DF) relay to transmit the information of the Primary User (PU) in the signal constellation domain, while the information bits of SU are carried by the index domain. Through this design concept, the mutual interference between the PU and SU can be avoided. Upper bounds on the Bit Error Probabilities (BEPs) of the PU and SU are analytically derived. The influence of ST's location to the BER performance of PU and SU is also analysed. Several numerical results and discussions are provided to substantiate the theoretical analysis, and it is shown that the proposed protocol is a viable candidate for OFDM-based CR networks since it can enhance the BER performances of both PU and SU.
引用
收藏
页码：1796 / 1803
页数：8
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