Title :
Optimal power allocation for a multi-rate packet CDMA system with multi-media traffic
Author :
Wang, Lin ; Aghvami, A. Hamid
Author_Institution :
Center for Telecommun. Res., King´´s Coll., London, UK
Abstract :
Usually, when combining two or more services (each having their own QoS requirements), it is difficult to achieve a common operation point for all the services, When we satisfy the highest QoS requirement, the other services will be operating at “unnecessary high quality”. In this case, a lot of bandwidth is wasted due to a low traffic load. To solve this problem and to achieve higher spectral efficiency, a “QoS balance” method is developed in this paper to optimise the allocation of transmission power and evaluated in a wide-band DS-CDMA environment integrated with video and voice services. Our simulation results demonstrate that the capacity of the network or spectral efficiency is improved significantly, by this optimal power allocation scheme
Keywords :
broadband networks; code division multiple access; integrated voice/data communication; multimedia communication; packet radio networks; quality of service; radio spectrum management; spread spectrum communication; QoS; QoS balance method; bandwidth waste; capacity; multi-media traffic; multi-rate packet CDMA system; optimal power allocation; spectral efficiency; transmission power; video voice services; voice services; wide-band DS-CDMA environment; 3G mobile communication; Bandwidth; Bit rate; Multiaccess communication; Multimedia systems; Optimization methods; Quality of service; Radio frequency; Telecommunication traffic; Traffic control;
Conference_Titel :
Wireless Communications and Networking Conference, 1999. WCNC. 1999 IEEE
Conference_Location :
New Orleans, LA
Print_ISBN :
0-7803-5668-3
DOI :
10.1109/WCNC.1999.797798
