Title :
Network assisted diversity for random access systems in dispersive channels
Author :
Zhang, Ruifeng ; Tsatsanis, Michail K.
Author_Institution :
Dept. of Electr. & Comput. Eng., Stevens Inst. of Technol., Hoboken, NJ, USA
Abstract :
Network-assisted diversity multiple access (NDMA) is a random media access method, which involves signal processing techniques to resolve collided packets. NDMA can demonstrate substantial throughput performance gains when compared with other random access alternatives for variable-bit-rate sources. In this paper, 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. Performance issues are studied both analytically and numerically
Keywords :
cellular radio; dispersive channels; diversity reception; multi-access systems; multipath channels; packet radio networks; random processes; transceivers; NDMA; collided packets; dispersive channels; multipath channels; network-assisted diversity multiple access; performance issues; random access systems; random media access method; signal processing techniques; throughput performance; transceiver architecture; unknown propagation channels; variable-bit-rate sources; Computer networks; Dispersion; Diversity reception; Intelligent networks; Multiaccess communication; Performance analysis; Throughput; Time division multiple access; Transceivers; Wireless sensor networks;
Conference_Titel :
Signal Processing Advances in Wireless Communications, 1999. SPAWC '99. 1999 2nd IEEE Workshop on
Conference_Location :
Annapolis, MD
Print_ISBN :
0-7803-5599-7
DOI :
10.1109/SPAWC.1999.783074
