TSSG Researcher explores the use of Cognitive Radio Networks as a method to improve the Wireless Radio Spectrum

By 11th June 2018 No Comments

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Wireless radio spectrum is a scarce resource and a few chunks of the bandwidth of these licensed frequency bands sells at auctions for multi-billion dollar prices by the national regulatory authorities.

Efforts have been made to improve the spectral utilization. The idea of using cognitive radio network for efficient spectrum utilization is one such an effort. Cognitive  radio  networks  (CRNs) also have  the flexibility  to adjust their transmission parameters according to the needs of multimedia services or applications. For  this reason, wireless multimedia cognitive  radio networks (WMCRNs) have gained much attentions in today’s research domain.  This  paper presents a comprehensive survey of WMCRNs. Various multimedia  applications supported by CRNs, and various CR-based wireless networks are surveyed. The paper highlights the routing and link layer protocols used for WMCRNs, and also covers the quality-of-experience(QoE) design and security requirements for transmitting multimedia content over CRNs. It also provides an in-depth study of white space, TV white space, and cross-layer designs that have been used for WMCRNs. The survey also discusses the major spectrum sensing approaches used for the communications of bandwidth hungry and time-critical data over CRNs.

Publication Title: Wireless Multimedia Cognitive Radio Networks: A Comprehensive Survey

Authors: Muhammad Amjad, Mubashir Husain Rehmani and Shiwen Mao

Journal: IEEE Communications Surveys and Tutorials (to appear, 2018) Link: https://ieeexplore.ieee.org/document/8260890/