Title :
An efficient slot allocation algorithm to accommodate multimedia traffic in CDMA/TDD-based wireless communications systems
Author :
Yomo, Hiroyuki ; Nakata, Atsushi ; Hara, Shinsuke
Author_Institution :
Dept. of Electronic, Information, & Energy Eng., Osaka Univ., Japan
fDate :
6/23/1905 12:00:00 AM
Abstract :
We propose two time slot allocation algorithms for code division multiple access with time division duplex (CDMA/TDD) systems to efficiently accommodate multimedia traffic. Assuming a practical multiple cell environment and a multimedia service model which consists of several kinds of circuit-switched and packet-switched services with different qualities of service (QoS), we evaluate the average delay of the CDMA/TDD system with the proposed algorithms, and compare the performance with that of CDMA with frequency division duplex (CDMA/FDD) and time division multiple access with TDD (TDMA/TDD) systems. Our computer simulation results show that the CDMA/TDD system with one of the proposed algorithms, which can effectively avoid interference among users with different QoS, can improve the average delay performance as compared with the other systems
Keywords :
bandwidth allocation; cellular radio; circuit switching; code division multiple access; interference suppression; multimedia communication; packet radio networks; packet switching; quality of service; telecommunication traffic; CDMA/TDD; QoS; circuit-switched services; code division multiple access; delay performance; interference suppression; multimedia traffic; multiple cell environment; packet-switched services; quality of service; time division duplex; time slot allocation algorithms; wireless communications systems; Circuits; Computer simulation; Delay effects; Frequency conversion; Interference; Multiaccess communication; Multimedia systems; Quality of service; Time division multiple access; Traffic control;
Conference_Titel :
Vehicular Technology Conference, 2001. VTC 2001 Fall. IEEE VTS 54th
Conference_Location :
Atlantic City, NJ
Print_ISBN :
0-7803-7005-8
DOI :
10.1109/VTC.2001.956878
