Title :
A Cooperative Diversity Method for Cognitive Radio
Author :
Li Cui ; Jinlong Wang ; Xueqiang Zheng ; Qihui Wu
Author_Institution :
Inst. of Commun. Eng., Nanjing
Abstract :
In cognitive radio system, an unlicensed (secondary) user may share a frequency band with its licensed (primary) owner as long as the interference it incurs is not deemed harmful by the licensee. Therefore, a secondary user must take advantage of this fact by some means. In this paper we develop and analyze a cooperative diversity method for cognitive radio, which can let the secondary user to form virtual antenna arrays to achieve dramatic gains in slow fading wireless environments. A close-form expression of the upper bound of selection failure probability is given in the performance analysis. The conclusion is proved by computer simulation.
Keywords :
antenna arrays; cognitive radio; diversity reception; fading; frequency allocation; probability; radiofrequency interference; telecommunication network reliability; cognitive radio system; cooperative diversity method; fading wireless environments; frequency band sharing; radiofrequency interference; selection failure probability; virtual antenna arrays; Antenna arrays; Cognitive radio; Diversity methods; Fading; Force measurement; Frequency; Power system relaying; Radiofrequency interference; Relays; Upper bound;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing, 2008. WiCOM '08. 4th International Conference on
Conference_Location :
Dalian
Print_ISBN :
978-1-4244-2107-7
Electronic_ISBN :
978-1-4244-2108-4
DOI :
10.1109/WiCom.2008.303
