Title :
Network-assisted diversity multiple access in dispersive channels
Author :
Zhang, Ruifeng ; Tsatsanis, Michail K.
Author_Institution :
Dept. of Electr. & Comput. Eng., Drexel Univ., Philadelphia, PA, USA
fDate :
4/1/2002 12:00:00 AM
Abstract :
Network-assisted diversity multiple access (NDMA) is a novel random medium access method, which provides impressive throughput efficiency for multiplexing variable-bit-rate data sources. We study the implementation of the NDMA scheme in the presence of multipath channels. A transceiver architecture and random access strategies are proposed, which are able to detect and resolve collisions in the presence of unknown propagation channels. The performance issues are studied both analytically and numerically
Keywords :
cellular radio; dispersive channels; diversity reception; multi-access systems; multipath channels; multiuser channels; packet radio networks; NDMA; collision detection; collision resolution; dispersive channels; multipath channels; network-assisted diversity multiple access; packet radio access; propagation channels; random medium access method; throughput efficiency; transceiver architecture; variable-bit-rate data sources multiplexing; wireless cellular system; Dispersion; Fading; Intelligent networks; Multiaccess communication; Multipath channels; Performance analysis; Signal resolution; Throughput; Transceivers; Wireless sensor networks;
Journal_Title :
Communications, IEEE Transactions on
