Power Control Algorithm of Ranging Process in IEEE 802.16 Relay System

Ranging process in IEEE 802.16 system provides a number of functionalities such as initial network entry, uplink synchronization, power adjustment, and system coordination. As the introduction of relay network in IEEE 802.16 systems, a new transmission power control algorithm is necessary. Therefore, this paper proposes a novel ranging transmission power control algorithm which reduces the interference between MS-BS ranging (i.e. ranging between MS and BS) and MS-RS ranging (i.e. ranging between MS and RS). Computer simulation results show the performance of ranging process in terms of ranging detection success probability and validate the efficiency of the proposed transmission power control algorithm. These results will be beneficial as the guideline for the design of IEEE 802.16 relay system.