I. Introduction
Third-generation communication system must accommodate various multimedia services and the code-division multiple-access (CDMA) system is a major candidate. The capacity of the CDMA system is limited by the total interference received at each base station (BS). Thus, if it is possible to reduce the power consumption, the intracell and intercell interferences will decrease, and this results in the system capacity increase. Therefore, it is desirable to minimize the power consumption and at the same time to maximize the quality of service (QoS) level. A number of power control and allocation schemes [1], [2] have been proposed for voice and/or data services. However, these schemes have seldom focused on wireless video service.