DocumentCode :
345800
Title :
Optimal power allocation in CDMA forward link using dependency between pilot and traffic channels
Author :
Park, Seung Jong ; Kim, Dongwoo ; Kim, Chang-Yeon
Author_Institution :
R&D Center, Shinsegi Telecomm Inc., Seoul, South Korea
Volume :
1
fYear :
1999
fDate :
1999
Firstpage :
223
Abstract :
This paper shows a new method for minimizing the transmit power on CDMA forward link channels. Different from previous works, the proposed method uses the dependency that exists between the respective signal qualities of the pilot channel and traffic channels. Since present CDMA forward link exploits coherent demodulation with continuously transmitting pilot signals, the stronger the pilot channel is, the less traffic power may be required while the same transmission quality is maintained. With laboratory tests, the dependency is graphed. And then an optimal pilot signal quality is found, which minimizes the total transmit power. Considering various mobile environments, -10 dB is an outstanding choice for the pilot signal quality. This solution can be directly applied to maximize the capacity of CDMA cellular and PCS systems or improve the service quality at the cell edge
Keywords :
cellular radio; channel capacity; code division multiple access; demodulation; multiuser channels; optimisation; personal communication networks; quality of service; radio links; telecommunication traffic; CDMA cellular system; CDMA forward link; PCS system; coherent demodulation; laboratory tests; mobile environments; optimal pilot signal quality; optimal power allocation; pilot channel; service quality; system capacity; total transmit power; traffic channels; traffic power; transmission quality; AWGN; Demodulation; Interference; Laboratories; Multiaccess communication; Personal communication networks; Research and development; Telecommunication traffic; Testing; Transmitters;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Vehicular Technology Conference, 1999. VTC 1999 - Fall. IEEE VTS 50th
Conference_Location :
Amsterdam
ISSN :
1090-3038
Print_ISBN :
0-7803-5435-4
Type :
conf
DOI :
10.1109/VETECF.1999.797119
Filename :
797119
Link To Document :
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