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Dynamic Spectrum Access for Throughput, Delay, and Fairness Enhancement In Cognitive Radio Networks

Cognitive radio, with the capability to flexibly adapt its parameters, has been proposed as the enabling technology for unlicensed secondary users to dynamically access the licensed spectrum owned by legacy primary users on a negotiated or an opportunistic basis. Such a dynamic spectrum access provides a promising approach to overcoming the spectrum scarcity problem resulted from the dramatic increase of spectrum demands driven by emerging applications. This special issue solicitates original and unpublished papers proposing novel research and development techniques and methodologies to address the fundamental problems and challenges of enhancing cognitive radio network throughput, delay, and fairness via dynamic spectrum access.

Edited by: Xiuzhen Cheng, Yevgeni Koucheryavy,  Yingshu Li, Feng Zhao and Ty Znati

  1. The growing number of wireless devices for in-house use is causing a more intense use of the spectrum to satisfy the required quality-of-service such as throughput. This has contributed to spectrum scarcity an...

    Authors: Mohd Adib Sarijari, Mohd Sharil Abdullah, Gerard JM Janssen and Alle-Jan van der Veen
    Citation: EURASIP Journal on Wireless Communications and Networking 2015 2015:221
    Content type: Research Published on:

  2. The spectral handoff is important in cognitive wireless networks to ensure an adequate quality of service and performance for secondary user communications. This work presents a multivariable algorithm for dyn...

    Authors: Cesar Hernandez, C. Salgado, H. López and E. Rodriguez-Colina
    Citation: EURASIP Journal on Wireless Communications and Networking 2015 2015:216
    Content type: Research Published on:

  3. In this paper, an interference channel with a cognitive relay (IFC-CR) is considered to achieve spectrum sharing between a licensed primary user and an unlicensed secondary user. The CR assists both users in r...

    Authors: Qiang Li, Ashish Pandharipande, See Ho Ting and Xiaohu Ge
    Citation: EURASIP Journal on Wireless Communications and Networking 2015 2015:185
    Content type: Research Published on:

  4. Cognitive radios are expected to play a major role towards meeting the exploding traffic demand over wireless systems. A cognitive radio node senses the environment, analyzes the outdoor parameters, and then m...

    Authors: Nadine Abbas, Youssef Nasser and Karim El Ahmad
    Citation: EURASIP Journal on Wireless Communications and Networking 2015 2015:174
    Content type: Review Published on:

  5. Spectrum aggregation is an emerging technology to satisfy the data rate requirement of broadband services for next-generation wireless communication systems. In dynamic spectrum environment, in which the spect...

    Authors: Wei Wang, Lingcen Wu, Zhaoyang Zhang and Lin Chen
    Citation: EURASIP Journal on Wireless Communications and Networking 2015 2015:130
    Content type: Research Published on:

  6. With the rapid development of cognitive radio technologies, spectrum sharing becomes a promising approach to improving the efficiency of spectrum utilization and mitigating the spectrum scarcity problem. Previ...

    Authors: Tao Jing, Wei Li, Xiuying Chen, Xiuzhen Cheng, Xiaoshuang Xing, Yan Huo, Tao Chen, Hyeong-Ah Choi and Taieb Znati
    Citation: EURASIP Journal on Wireless Communications and Networking 2015 2015:94
    Content type: Research Published on:

  7. Software-defined radios (SDRs) are a promising technology to enable dynamic channel access and sharing. Multiple Input Multiple Output (MIMO) is another radio technology breakthrough for increasing wireless ne...

    Authors: Hang Liu, Lin Luo, Dengyuan Wu, Jiguo Yu and Dechang Chen
    Citation: EURASIP Journal on Wireless Communications and Networking 2015 2015:65
    Content type: Research Published on:

  8. A challenging problem in cognitive radio networks (CRNs) is to design a throughput efficient routing and scheduling algorithm for end-to-end communications between secondary users (SUs) in a distributed manner...

    Authors: Yuan Le, Xiuzhen Cheng, Dechang Chen, Nan Zhang, Taieb Znati, Mznah A Al-Rodhaan and Abdullah Al-Dhelaan
    Citation: EURASIP Journal on Wireless Communications and Networking 2015 2015:49
    Content type: Research Published on:

  9. Smartphones have been equipped with the cameras that can shoot HD videos, and the video chat apps such as Skype are becoming popular. We can, therefore, intuitively predict the trend that users are expecting t...

    Authors: Tao Jing, Xuewei Cui, Wei Cheng, Shixiang Zhu, Yan Huo and Xiuzhen Cheng
    Citation: EURASIP Journal on Wireless Communications and Networking 2015 2015:45
    Content type: Research Published on:

  10. Cognitive radio and cooperative communication are two new network technologies. So, the combination of these two new technologies is a novel solution to solve the problem of spectrum scarcity. Two main challen...

    Authors: Tao Jing, Fan Zhang, Wei Cheng, Yan Huo and Xiuzhen Cheng
    Citation: EURASIP Journal on Wireless Communications and Networking 2015 2015:20
    Content type: Research Published on:

  11. Relay cooperation can enhance coverage, throughput, and reliability of wireless communication systems, thus attracting intense research interest in the past decade. However, most of them focused on half-duplex...

    Authors: Hongbin Chen, Songgao Tan and Feng Zhao
    Citation: EURASIP Journal on Wireless Communications and Networking 2015 2015:19
    Content type: Research Published on:

  12. In this paper, multicast beamforming in cognitive relay systems is investigated with the consideration of imperfect channel state information at the transmitter (CSIT). We focus at the design of the optimal si...

    Authors: Shengyu Li, Wenjun Xu, Xiaomei Lu and Jiaru Lin
    Citation: EURASIP Journal on Wireless Communications and Networking 2015 2015:17
    Content type: Research Published on:

  13. Cognitive radios are currently presented as the solution to the ever-increasing spectrum shortage problem. However, their increased capabilities over traditional radios introduce a new dimension of security th...

    Authors: David S Jackson, Wanyu Zang, Qijun Gu, Wei Cheng and Meng Yu
    Citation: EURASIP Journal on Wireless Communications and Networking 2015 2015:4
    Content type: Research Published on:

  14. Multiuser cooperative communication significantly improves the performance of wireless communication networks. One key challenge of multiuser cooperative communication is how to design a cooperative mechanism ...

    Authors: Yinshan Liu, Xiaofeng Zhong, Yang Yan, Jing Wang and Walid Saad
    Citation: EURASIP Journal on Wireless Communications and Networking 2014 2014:211
    Content type: Research Published on:

  15. A cognitive radio ad hoc network (CRAHN) can be considered as a special delay tolerant network (DTN) that is composed of mobile secondary users (SUs) with social characteristics. Given intermittent connectivity a...

    Authors: Tao Jing, Jie Zhou, Hang Liu, Zhewei Zhang and Yan Huo
    Citation: EURASIP Journal on Wireless Communications and Networking 2014 2014:200
    Content type: Research Published on: