Forward-link power control utilizing neighboring-cell pilot power for DS-CDMA cellular systems

This paper proposes for DS-CDMA cellular systems a forward-link power control scheme utilizing neighboring-cell pilot power in order to improve the quality of forward traffic channels and to increase traffic capacity. In this scheme, each mobile station measures pilot powers received from neighboring cells. Transmission power of the forward traffic channel is then controlled by base stations according to the pilot powers measured at the respective mobile station, and uniform service quality is provided to all channels. Simulation results show that the proposed scheme reduces outage and forced termination probabilities with a pilot power error of 1.5 dB, and increases capacity for the forced termination probability of 1% by 5% and 60% in the case of soft handover and hard handover.

[1]  R. R. Gejji.  Forward-link-power control in CDMA cellular systems , 1992 .

[2]  Mamoru Sawahashi,et al.  Wideband coherent DS-CDMA , 1995, 1995 IEEE 45th Vehicular Technology Conference. Countdown to the Wireless Twenty-First Century.

[3]  Andrew J. Viterbi,et al.  On the capacity of a cellular CDMA system , 1991 .

[4]  Torbjorn Andersson.  Tuning the macro diversity performance in a DS-CDMA system , 1994, Proceedings of IEEE Vehicular Technology Conference (VTC).

[5]  K. Ohno,et al.  Performance of diversity handover in DS-CDMA cellular systems , 1995, Proceedings of ICUPC '95 - 4th IEEE International Conference on Universal Personal Communications.

[6]  Klein S. Gilhousen,et al.  On the system design aspects of code division multiple access (CDMA) applied to digital cellular and personal communications networks , 1991, [1991 Proceedings] 41st IEEE Vehicular Technology Conference.