Title :
Sequence Design for Cognitive FH-CDMA Systems
Author :
He, Shibiao ; Xuan, Guixin ; Wu, Lehuwa
Author_Institution :
Chongqing Commun. Inst., Chongqing
Abstract :
Based on the concept of cognitive radio (CR) and the idea of no-hit zone (NHZ), a novel cognitive frequency hopping code division multiple access (FH-CDMA) system is proposed, and the related FH sequences with NHZ are designed. When sensing spectrum usage from primary users, the cognitive FH-CDMA system employing NHZ FH sequences can flexibly change hopping frequencies to avoid interference to primary users while the whole FH-CDMA network can continue to be kept orthogonal without multiple access interference (MAI).
Keywords :
code division multiple access; cognitive radio; frequency hop communication; interference suppression; radiofrequency interference; cognitive FH-CDMA systems; cognitive frequency hopping code division multiple access; cognitive radio; interference avoidance; multiple access interference; no-hit zone; sequence design; spectrum usage; Industrial electronics;
Conference_Titel :
Industrial Electronics and Applications, 2007. ICIEA 2007. 2nd IEEE Conference on
Conference_Location :
Harbin
Print_ISBN :
978-1-4244-0737-8
Electronic_ISBN :
978-1-4244-0737-8
DOI :
10.1109/ICIEA.2007.4318666
