Title :
Capacity of CDMA/TDD systems for mobile multimedia services
Author :
Jeong, Dong Geun ; Jeon, Wha Sook
Author_Institution :
Dept. of Electron. Eng., Hankuk Univ. of FS, South Korea
Abstract :
Traffic asymmetry between uplink and downlink is one of the most notable characteristics in wireless multimedia communications. CDMA/TDD systems with unbalanced slot allocation can be a good solution for this problem. However, the level of traffic asymmetry may be significantly different from cell to cell. In this paper, we calculate the capacity of CDMA/TDD systems under given patterns of traffic asymmetry. Using the results, we investigate optimal slot allocation that maximizes the frequency utilization in terms of the whole cellular system
Keywords :
cellular radio; channel capacity; code division multiple access; frequency allocation; multimedia communication; radio links; telecommunication traffic; time division multiplexing; CDMA/TDD systems; capacity; cellular system; downlink; frequency utilization; maximization; mobile multimedia services; optimal slot allocation; traffic asymmetry; unbalanced slot allocation; uplink; Bandwidth; Downlink; Frequency conversion; Mobile communication; Multiaccess communication; Multimedia systems; Radio spectrum management; Resource management; Time division multiple access; Wireless communication;
Conference_Titel :
Vehicular Technology Conference, 1999. VTC 1999 - Fall. IEEE VTS 50th
Conference_Location :
Amsterdam
Print_ISBN :
0-7803-5435-4
DOI :
10.1109/VETECF.1999.800258
