Exact Outage Analysis in Cognitive Two-Way Relay Networks With Opportunistic Relay Selection Under Primary User's Interference

被引:49
|
作者
Zhang, Xing [1 ]
Zhang, Zhenhai [1 ]
Xing, Jia [1 ]
Yu, Rong [2 ]
Zhang, Pengwei [1 ]
Wang, Wenbo [1 ]
机构
[1] Beijing Univ Posts & Telecommun, Sch Informat & Commun Engn, Key Lab Universal Wireless Commun, Minist Educ, Beijing 100876, Peoples R China
[2] Guangdong Univ Technol, Guangzhou 510006, Guangdong, Peoples R China
基金
美国国家科学基金会;
关键词
Cognitive two-way relay networks; opportunistic relay selection; physical-layer network coding (PNC); system outage performance; COOPERATIVE DIVERSITY; POWER ALLOCATION; CHANNEL; PROTOCOLS; SCHEME;
D O I
10.1109/TVT.2014.2346615
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
In the current study of cognitive relay networks, most related works focus on the effect of interference from secondary users (SUs) to primary receivers (PRs), while neglecting the links from primary transmitters (PTs) to SUs. In this paper, the interference both from SUs to PRs and from PTs to SUs is considered in the analysis of cognitive two-way relay networks with opportunistic relay selection. The exact closed-form expression for the outage probability of the secondary system is derived over Rayleigh fading channels, which is verified through various Monte Carlo simulations. Meanwhile, an asymptotic expression and diversity order are also derived to reveal additional insights into the effect of the mutual interference between the primary and secondary systems on the diversity. Above all, based on the analysis, the effects of the positions of the PT, the PR, and secondary relays on the outage performance of the secondary system are studied. Our results reveal that network placement planning is desperately necessary to achieve a better outage performance. It is shown that the position of relays has a strong impact on the performance, particularly when the number of relays is large. However, when the relative position between the primary system and secondary systems is fixed, the positions of the PT have a very slight impact on the outage performance, which can be neglected. Hence, in practical deployment, when performing cognitive two-way relaying with opportunistic relay selection, proper network placement planning should be carefully addressed.
引用
收藏
页码:2502 / 2511
页数:10
相关论文
共 50 条
  • [31] Simple relay selection criterion for general two-way opportunistic relaying networks
    Li, E. Y.
    Yang, S. Z.
    [J]. ELECTRONICS LETTERS, 2012, 48 (14) : 881 - 882
  • [32] Distributed Beamforming for Two-Way DF Relay Cognitive Networks Under Primary-Secondary Mutual Interference
    Afana, Ali
    Ghrayeb, Ali
    Asghari, Vahid Reza
    Affes, Sofiene
    [J]. IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, 2015, 64 (09) : 3918 - 3930
  • [33] Exact Outage Probability of Cognitive Underlay DF Relay Networks with Best Relay Selection
    Vo Nguyen Quoc Bao
    Trung Quang Duong
    [J]. IEICE TRANSACTIONS ON COMMUNICATIONS, 2012, E95B (06) : 2169 - 2173
  • [34] Relay Selection for MIMO Two-Way Relay Networks with Spatial Multiplexing
    Silva, Shashindra
    Amarasuriya, Gayan
    Tellambura, Chintha
    Ardakani, Masoud
    [J]. 2015 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATION WORKSHOP (ICCW), 2015, : 943 - 948
  • [35] Joint Relay and Jammer Selection for Secure Two-Way Relay Networks
    Chen, Jingchao
    Zhang, Rongqing
    Song, Lingyang
    Han, Zhu
    Jiao, Bingli
    [J]. 2011 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS (ICC), 2011,
  • [36] Joint Relay and Jammer Selection for Secure Two-Way Relay Networks
    Chen, Jingchao
    Zhang, Rongqing
    Song, Lingyang
    Han, Zhu
    Jiao, Bingli
    [J]. IEEE TRANSACTIONS ON INFORMATION FORENSICS AND SECURITY, 2012, 7 (01) : 310 - 320
  • [37] Joint relay and jammer selection for secure two-way relay networks
    Chen, Jingchao
    Zhang, Rongqing
    Song, Lingyang
    Han, Zhu
    Jiao, Bingli
    [J]. IEEE Transactions on Information Forensics and Security, 2012, 7 (1 PART 2) : 310 - 320
  • [38] Performance Analysis of Relay Selection in Two-Way Relay Networks With Channel Estimation Errors
    Pu, Jyun-Wei
    Wang, Tsang-Yi
    Li, Sheng-Hung
    Li, Chih-Peng
    Li, Hsueh-Jyh
    [J]. IEEE TRANSACTIONS ON BROADCASTING, 2015, 61 (03) : 482 - 493
  • [39] Resource Allocation and Outage Analysis for an Adaptive Cognitive Two-Way Relay Network
    Li, Qunwei
    Varshney, Pramod K.
    [J]. IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, 2017, 16 (07) : 4727 - 4737
  • [40] Joint Relay Selection and Power Allocation for Two-Way Relay Networks
    Talwar, Saurabh
    Jing, Yindi
    Shahbazpanahi, Shahram
    [J]. IEEE SIGNAL PROCESSING LETTERS, 2011, 18 (02) : 91 - 94