Information rate and system capacity of wcdma systems under non-ideal power control

Zhang Yan; Yan Hongsen; Zhu Shihua

Volume 25 Issue 5

May 2003

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Article Navigation > Journal of Electronics & Information Technology > 2003 > 25(5): 639-643

Zhang Yan, Yan Hongsen, Zhu Shihua. Information rate and system capacity of wcdma systems under non-ideal power control[J]. Journal of Electronics & Information Technology, 2003, 25(5): 639-643.

Citation:

Zhang Yan, Yan Hongsen, Zhu Shihua. Information rate and system capacity of wcdma systems under non-ideal power control[J]. Journal of Electronics & Information Technology, 2003, 25(5): 639-643.

Zhang Yan, Yan Hongsen, Zhu Shihua. Information rate and system capacity of wcdma systems under non-ideal power control[J]. Journal of Electronics & Information Technology, 2003, 25(5): 639-643.

Citation:

Zhang Yan, Yan Hongsen, Zhu Shihua. Information rate and system capacity of wcdma systems under non-ideal power control[J]. Journal of Electronics & Information Technology, 2003, 25(5): 639-643.

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Information rate and system capacity of wcdma systems under non-ideal power control

Received Date: 2001-10-18
Rev Recd Date: 2002-08-22
Publish Date: 2003-05-19

Abstract

Abstract

Starting from the sufficient and necessary condition of existence of solution for power assignment in a single cell WCDMA (Wideband Code Division Multiple Access) system, this paper obtains the system capacity under non-ideal power control through modeling the target SIR(Signal to Interference Ratio) with a log-normal random variable. This provides a criterion for determining the trade-off between the information rate of VBR(Variable Bit Rate) traffic and the capacities of CBR(Constant Bit Rate) and VBR. traffics in mobile communica-tions, Analysis and numerical results show that the system performance is notably declined by non-idea power control, and that the information rate and system capacity are exchangeable. As a result, the system can be adapted to diverse performance requirements for various services by varying the control parameters, then the resource utilization and quality of services of the system can be improved.

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References(1)

References

S. RamaKrishna, J. M. Holtzman, A scheme for throughput maximization in a dual-class CDMA system[J], IEEE Journal on Selected Areas in Comnmnications, 1998, 16(6), 830-844.[2]K. Dongwoo, Rate-regulated power control for supporting flexible transmission in future CDMA mobile networks[J], IEEE J. on Selected Areas in Communications, 1999, 17(5), 968-977.[3]K. Gilhousen, I. Jacobs, R. Padovani, et al., On the capacity of a cellular CDMA system[J], IEEE Trans. on VTC, 1991, 40(2), 303-312.[4]A. Sampath, P. Kumarm, J. Holtzman, Power control and resource management for a multimedia CDMA wireless system[A], PIMRC95[C], IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, Toronto, Canada, 1995, 21-25.[5]关皓,李承恕,非理想功率控制下综合业务CDMA系统性能分析[J],铁道学报,2000,22(6),76-79.[6]A.J.Viterbi著,李世鹤,译,CDMA扩频通信原理,北京,人民邮电出版社,1997.1,173-180 ［7］A. Sampath, P. Kumarm, J. Holtzman, On setting reverse link target SIR in a CDMA system[A],in Proc. VTC97[C], Phoenix, Arizona, May 1997, 929-933.[7]S. Schwartz, Y. yeh, On the distribution function and moments of power sums with lognormal components[J], Bell Syst. Tech. J., 1982, 61(2), 1441-1462.

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