Title :
Adaptive downlink multi-carrier resource allocation for real-time multimedia traffic in cellular systems
Author :
Damji, Navid ; Le-Ngoc, Tho
Author_Institution :
Dept. of Electr. & Comput. Eng., McGill Univ., Montreal, Que., Canada
Abstract :
This paper presents adaptive downlink multi-carrier resource allocation strategies based on channel information suitable for real-time multimedia services in mobile cellular systems. Both user quality-of-service (QoS) and system performance in terms of system spectral efficiency are considered in the evaluation and comparison of the proposed schemes. Simulation results show that by employing the time-varying channel responses to arrange and allocate the sub-carriers according their expected signal-to-noise ratio (SNR) quality, the proposed scheme offers a substantial increase in system spectral efficiency in supporting real-time multimedia services of different QoS requirements. Interference avoidance strategies are also introduced to further enhance the performance of voice services in cellular systems.
Keywords :
broadband networks; cellular radio; interference suppression; multimedia communication; quality of service; radiofrequency interference; real-time systems; time-varying channels; voice communication; Internet; adaptive downlink multicarrier resource allocation; broadband wireless communication; channel information; interference avoidance strategies; mobile cellular systems; quality-of-service; real-time multimedia traffic; signal-to-noise ratio quality; system spectral efficiency; time-varying channel responses; voice services; Downlink; Interference; Multimedia systems; Quality of service; Real time systems; Resource management; Signal to noise ratio; System performance; Time-varying channels; Traffic control;
Conference_Titel :
Communications, 2004 IEEE International Conference on
Print_ISBN :
0-7803-8533-0
DOI :
10.1109/ICC.2004.1313351
