Title :
Proposal of determining the number of subcarriers for MC-CDMA systems
Author :
Li, Cuiran ; Li, Chengshu
Author_Institution :
Modern Commun. Res. Inst., Beijing Jiaotong Univ., China
fDate :
31 Aug.-4 Sept. 2004
Abstract :
In the paper, we propose a scheme of determining the number of subcarriers for MC-CDMA systems. Considering that the next-generation wireless communication system is expected to provide multimedia transmission services including speech, data, video and image etc and different services with diversity QoS requirements, we propose a QoS level judging algorithm based on multilayer fuzzy decision policy with multifactor. Then we give the expression of the number of subcarriers according to the QoS level of a user.
Keywords :
Rayleigh channels; code division multiple access; fuzzy logic; multimedia communication; quality of service; MC-CDMA system; QoS level judging algorithm; multicarrier code division multiple access systems; multilayer fuzzy decision policy; multimedia transmission services; next-generation wireless communication system; quality of service; subcarrier determination; AWGN; Delay; Fading; Frequency; Multiaccess communication; Multicarrier code division multiple access; Multimedia systems; Proposals; Speech; Wireless communication;
Conference_Titel :
Signal Processing, 2004. Proceedings. ICSP '04. 2004 7th International Conference on
Print_ISBN :
0-7803-8406-7
DOI :
10.1109/ICOSP.2004.1441678
