Title :
A channel-adaptive and throughput-efficient scheduling scheme in power-constrained voice/data CDMA networks based on ranking of received power capabilities
Author :
Shu, Tao ; Niu, Zhisheng
Author_Institution :
Dept. of Electron. Eng., Tsinghua Univ., Beijing, China
Abstract :
In this paper, we study the throughput optimization of data traffic for a power-constrained voice/data CDMA system by the scheduling of data users. It is found that under a given received power budget and the constraints of transmission powers, the throughput of data traffic is maximized by selecting simultaneous data users and allocating powers according to the descending order of their received power capabilities, which is defined as the product between the transmission power limit and the channel gain. Based on this principle, a novel dynamic and channel-adaptive scheduling scheme is proposed to enhance the throughput performance of data traffic while maintaining certain fairness among different users. The validity of the proposed scheme and its robustness to channel estimation error is verified by comparing with the conventional fair-sharing scheme and round-robin scheme via computer simulation.
Keywords :
adaptive scheduling; code division multiple access; integrated voice/data communication; mobile radio; optimisation; telecommunication traffic; channel gain; channel-adaptive scheduling scheme; data traffic; data users; fair-sharing scheme; power allocation; power-constrained voice/data CDMA networks; received power budget; received power capabilities ranking; round-robin scheme; throughput optimization; throughput-efficient scheduling scheme; transmission power limit; Channel estimation; Computer errors; Computer simulation; Dynamic scheduling; Multiaccess communication; Processor scheduling; Robustness; Telecommunication traffic; Throughput; Traffic control;
Conference_Titel :
Vehicular Technology Conference, 2003. VTC 2003-Spring. The 57th IEEE Semiannual
Print_ISBN :
0-7803-7757-5
DOI :
10.1109/VETECS.2003.1207586
