Title :
Performance of pilot/data-combined channel estimation and power allocations for dual-rate DS/CDMA system over mobile radio channels
Author :
Park, Seung Young ; Oh, Hang Suk ; Lee, Woo Yong ; Kang, Chung Gu
Author_Institution :
Sch. of Electr. Eng., Korea Univ., Seoul, South Korea
Abstract :
We analyze the performance of uplink dual-rate DS/CDMA system using the pilot/data-combined channel estimation scheme. Our analysis allows for investigating the characteristics of optimal power allocation subject to varying QoS requirements and furthermore, quantifying the corresponding advantage in terms of the system capacity under the pilot/data-combined channel estimation scheme. We demonstrate that, when the different classes of users with varying channel configurations and quality-of-service (QoS) requirements are co-existing, the system capacity can be significantly improved with the pilot/data-combined scheme as compared with that of system using the conventional pilot-based scheme
Keywords :
Rayleigh channels; channel capacity; code division multiple access; demodulation; error statistics; multipath channels; multiuser channels; parameter estimation; quality of service; spread spectrum communication; QoS requirements; bit error probability; coherent demodulation; dual-rate DS/CDMA system; mobile radio channels; multi-code/multirate CDMA terminals; multipath Rayleigh fading; optimal power allocation; performance analysis; pilot/data-combined channel estimation; quality of service; system capacity; third generation mobile communication system; uplink; variable processing gain; varying channel configurations; 3G mobile communication; Bit error rate; Channel estimation; Demodulation; Design optimization; Land mobile radio; Multiaccess communication; Performance analysis; Power control; Quality of service;
Conference_Titel :
Vehicular Technology Conference Proceedings, 2000. VTC 2000-Spring Tokyo. 2000 IEEE 51st
Conference_Location :
Tokyo
Print_ISBN :
0-7803-5718-3
DOI :
10.1109/VETECS.2000.851611
