1 - 5 of 5 Chapters
[This chapter presents fundamental issues of cognitive radio networks (CRNs). In the first section, background of why using CRN and some conceptual descriptions about CRNs will be given, wherein interleave-type CRN, underlay-type CRN, and overlay-type CRN are detailed. In addition, current...
[In this chapter, a cross-layer two-phase time division multiple access (TDMA) cooperation framework for primary users (PUs) and secondary user (SUs) in a cooperative cognitive radio network (CCRN) is proposed and analyzed. Specifically, the cooperation framework in which the SU uses the...
[This chapter is concerned with enhancement of spectrum efficiency/utilization by using polarization enabled two-phase cooperation between primary users (PUs) and secondary users (SUs) for cooperative cognitive radio networking (CCRN). Specifically, we aim to exploit the degrees of freedom...
[This chapter is concerned with enhancement of spectrum utilization whereby a licensed primary user (PU) engages unlicensed secondary users (SUs) to relay its transmission in an energy-aware cognitive radio network to expedite information transfer. The cooperation can be pure relaying or provide...
[With the rapid progress in communication technologies and the explosive proliferation of wireless applications, the demand for wireless broadband services continues to explode. On the one hand, as a precious natural resource, the amount of most easily explorable radio spectrum for wireless...
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