Cooperation and cognitive radio

Document Type

Conference Proceeding

Publication Date

12-1-2007

Abstract

Cooperation is increasingly regarded as a key technology for tackling the challenges of a practical implementation of cognitive radio. In this paper, we first give a brief overview of the envisioned applications of cooperative technology to cognitive radio, distinguishing among cooperative sensing for detection of the primary activity, cooperative transmission between secondary nodes and cooperative transmission of primary traffic by secondary users (cognitive relaying). Then, we focus on the latter scenario and investigate a simple wireless network, where one secondary transmitter has the option to relay traffic of the primary. Assuming that the primary is oblivious to the presence of the secondary (thus excluding the possibility of spectrum leasing), the secondary transmitter optimizes transmission/ relaying parameters towards the goal of maximizing the rate towards the secondary receiver. Numerical results are provided in order to discuss the advantage and limits of cognitive relaying. © 2007 IEEE.

Identifier

38549138385 (Scopus)

ISBN

[1424403537, 9781424403530]

Publication Title

IEEE International Conference on Communications

External Full Text Location

https://doi.org/10.1109/ICC.2007.1077

ISSN

05361486

First Page

6511

Last Page

6515

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