An equal-strength/power-suspended power control scheme for a DS/CDMA cellular system

The paper proposes a closed-loop equal-strength/power-suspended power control scheme for uplink in a DS/CDMA cellular system. In this scheme, the MS (mobile station) suspends its transmission as the short-term channel fading is less than a preset threshold; otherwise, the MS transmits with power adapting to combat the channel fading so that the received signal power level is constant. We analyze this power control scheme and obtain performance measures such as the system capacity, total transmission rate, and MS power consumption. Numerical results show that the proposed equal strength/power-suspended power control scheme has the best performance, compared with other closed-loop power control schemes such as the equal-strength power control scheme (also known as perfect power control), the equal-strength power-limited power control scheme, and the equal-strength/poweu-limited+rate-adapted power control scheme