Controlling QoS by Integrated Power Control and Link Adaptation in Broadband Wireless Networks
Kin Kwong Leung, Li‐Chun Wang · European Transactions on Telecommunications · 2000
Abstract We propose and analyze the performance of an algorithm for integrated power control and adaptive, modulationkoding to achieve a specitied range of packct error rate for real‐time applications in broadband wireless packet‐switched networks. The algorithm applies the Kalman‐filter method [I] for power control, and adapts packet transmission to an appropriate modulation level, according to the packet error requirement, and the radio and interference conditions. A new criterion for maintaining stable transmission power is derived. Based on the criterion, the proposed technique performs the link adaptation and adjusts transmission power to achieve the specified packet error rate. The effectiveness of the proposed method is dcmonstratcd by several numcrical examples.