Title :
A method for interference avoidance in channelized wireless systems
Author :
Benveniste, Mathilde
Author_Institution :
Res., AT&T Labs., Florham Park, NJ, USA
Abstract :
Power control coupled with user matching can improve the spectrum efficiency in channelized cellular systems. A power control policy must balance the reduction in interference realized with lower transmit-power levels with the reduction in serving signal, which can be done successfully through user matching. When applied indiscriminately, power control can exacerbate the near-far-end problem. We present a power control policy that does not do so, and describe a distributed algorithm for user matching that is easy to implement. The proposed technique can be combined with either fixed or dynamic channel/bandwidth allocation algorithms and applies to both circuit-based and packet-based traffic. Though it can be used with mobile users, it is ideal for fixed and slow-moving terminals
Keywords :
bandwidth allocation; cellular radio; channel allocation; circuit switching; cochannel interference; distributed algorithms; interference suppression; packet radio networks; power control; telecommunication channels; telecommunication control; telecommunication traffic; channelized cellular systems; channelized wireless systems; circuit-based traffic; cochannel interference; distributed algorithm; dynamic channel/bandwidth allocation algorithms; fixed channel/bandwidth allocation algorithms; fixed terminals; heuristic algorithm; interference avoidance method; mixed power control with directed assignment; near-far-end problem; neighbor-channel interference; packet-based traffic; power control; serving signal reduction; slow-moving terminals; spectrum efficiency; transmit-power levels; user matching; wireless LAN; Attenuation; Base stations; Circuits; Control systems; Distributed algorithms; Downlink; Frequency; Interference; Power control; Radio transmitters;
Conference_Titel :
Communications, 2001. ICC 2001. IEEE International Conference on
Conference_Location :
Helsinki
Print_ISBN :
0-7803-7097-1
DOI :
10.1109/ICC.2001.936609
