Title :
A Novel OFDM-MSK Scheme for MB-OFDM UWB Based on Cognitive Radio
Author :
Weng, Weiwen ; Liu, Yuan´an ; Hu, Hefei ; Yuan, Dongming ; Zhu, Xianglin
Author_Institution :
Beijing Univ. of Posts & Telecommun. (BUPT), Beijing, China
Abstract :
Minimum-shift keying (MSK) has a fast roll-off sidelobe spectrum, which is an excellent property for multi-carrier modulation (MCM) systems. In this paper, we propose a novel OFDM-MSK modulation scheme and introduce it to MB-OFDM UWB systems based on cognitive radio (CR). Therefore, the new system has a better out-of-band attenuation property. In such situations, when incumbent radio services are detected, without additional measures, only by tuning off the sub-carriers on the corresponding interference frequency band, the requirements of MB-OFDM UWB systems based on CR can be satisfied, and the interference on incumbent users will be cancelled sufficiently.
Keywords :
OFDM modulation; cognitive radio; minimum shift keying; ultra wideband communication; MB-OFDM UWB systems; OFDM-MSK modulation scheme; cognitive radio; minimum-shift keying; multi-carrier modulation systems; out-of-band attenuation; roll-off sidelobe spectrum; Attenuation; Binary phase shift keying; Chromium; Cognitive radio; Interference cancellation; OFDM; Quadrature amplitude modulation; Quadrature phase shift keying; Radiofrequency interference; Wireless sensor networks;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing, 2009. WiCom '09. 5th International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-3692-7
Electronic_ISBN :
978-1-4244-3693-4
DOI :
10.1109/WICOM.2009.5305449
