Title :
A priority-based adaptive CDMA scheme for multimedia wireless systems
Author :
Ajibesin, Adeyemi Abel ; Chan, H. Anthony ; Dlodlo, M.E.
Author_Institution :
Dept. of Electr. Eng., Univ. of Cape Town, Cape Town
Abstract :
A prioritised adaptive CDMA scheme in which processing gain is given priority over modulation and coding schemes (MCS) in wireless systems is presented. The need for such design is necessary for increased bit rate. A scheme that has the capability to optimise both throughput and quality of service without sacrificing the required bit rate is designed. This is applied to direct sequence code division multiple access (DS-CDMA) wireless networks for efficient broadband systems. Simulation results show that the proposed adaptive CDMA scheme provides throughput improvement of the application and overall system performance using priority-based optimisation.
Keywords :
broadband networks; code division multiple access; encoding; modulation; multimedia communication; quality of service; spread spectrum communication; DS-CDMA wireless networks; broadband systems; coding; direct sequence code division multiple access; modulation; multimedia wireless systems; priority-based adaptive CDMA scheme; priority-based optimisation; quality of service; Adaptive systems; Bit rate; Design optimization; Direct-sequence code-division multiple access; Modulation coding; Multiaccess communication; Multimedia systems; Quality of service; Throughput; Wireless networks; Adaptive modulation and coding; CDMA; bit rate; mobile satellite channel;
Conference_Titel :
Military Communications Conference, 2008. MILCOM 2008. IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
978-1-4244-2676-8
Electronic_ISBN :
978-1-4244-2677-5
DOI :
10.1109/MILCOM.2008.4753284
