DocumentCode :
2736016
Title :
Fast initial acquisition of transmitter power for the reverse link DS/CDMA cellular systems
Author :
Tanaka, Masato ; Sampei, Seiichi ; Morinaga, Norihiko
Author_Institution :
Graduate Sch. of Eng., Osaka Univ., Japan
Volume :
3
fYear :
1998
fDate :
18-21 May 1998
Firstpage :
2436
Abstract :
This paper proposes a fast initial acquisition technique for the carrier-to-interference power ratio (CIR)-based transmitter power control (TPC) scheme in the reverse link direct sequence code division multiple access (DS/CDMA) cellular system to support high capacity wireless multimedia communication systems that includes both long-holding-time media such as voice as well as short-holding-time media such as the e-mail message. In the proposed scheme, the base station (BS) calculates the interference signal level averaged over all the interference signal level of currently connected mobile stations (MSs), and broadcasts the required received-power level for a certain target CIR level via the downlink broadcast channel. Using the broadcasted information as well as the average path loss measured in the downlink, each MS calculates the initial transmitter power level with the same manner as that for the power-based TPC scheme. Computer simulation confirms that the proposed scheme can achieve higher throughput performance than the conventional scheme by employing the optimum power margin of 5 dB, without degrading so much system capacity of the long-holding-time media, especially when the average message length of the short-holding-time media becomes short
Keywords :
broadcast channels; cellular radio; code division multiple access; multimedia communication; power control; radio links; radio transmitters; radiofrequency interference; spread spectrum communication; telecommunication control; CIR; DS/CDMA cellular systems; average message length; average path loss; base station; carrier-to-interference power ratio; computer simulation; direct sequence code division multiple access; downlink broadcast channel; e-mail message; fast initial acquisition; high capacity systems; interference signal level; long-holding-time media; mobile stations; optimum power margin; received-power level; reverse link; short-holding-time media; throughput performance; transmitter power control; voice; wireless multimedia communication systems; Broadcasting; Direct-sequence code-division multiple access; Downlink; Interference; Multiaccess communication; Multimedia communication; Multimedia systems; Power control; Transmitters; Wireless communication;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Vehicular Technology Conference, 1998. VTC 98. 48th IEEE
Conference_Location :
Ottawa, Ont.
ISSN :
1090-3038
Print_ISBN :
0-7803-4320-4
Type :
conf
DOI :
10.1109/VETEC.1998.686196
Filename :
686196
Link To Document :
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