Power Control in CDMA Cellular Communication Systems
M. Rintamaki · 2003
Abstract Transmitter power control (TPC) is an essential radio resource management function in CDMA cellular communication systems. Since in CDMA the users share the same frequency band simultaneously, any unnecessary increase in transmitter powers will increase the interference seen by all other users. Thus it is important to minimize the transmitter powers while at the same time providing the users with sufficient quality of service (QoS). Merely finding a suitable power level initially for each transmitter is not sufficient, since the wireless radio environment changes all the time. Therefore, a TPC algorithm needs to be able to adapt to the changes in the radio channel conditions. Furthermore, the next generation in cellular communication systems will provide various services, including real‐time and non‐real‐time services with various data rates. The different service types lead to different, and even conflicting, solutions to efficient TPC.