Title :
On the capacity of slotted Aloha with Rayleigh fading: the role played by the number of interferers
Author :
Dardari, Davide ; Tralli, Velio ; Verdone, Roberto
Author_Institution :
CSITE-CNR, Bologna Univ., Italy
fDate :
5/1/2000 12:00:00 AM
Abstract :
The role played by the number of interferers and the modulation choice in the performance of slotted Aloha networks with Rayleigh fading is investigated and discussed; the case of multiple transmitted power classes is also considered. A new capture model which takes the number of actual interferers into account is proposed. The network capacity is analytically estimated, and significant differences (depending on the modulation scheme) are found with respect to previously published results carried out by means of more common (and less accurate) capture models, also when the case of different transmitted power classes is considered.
Keywords :
Rayleigh channels; access protocols; channel capacity; modulation; packet radio networks; radiofrequency interference; Rayleigh fading; interferers; modulation; multiple transmitted power classes; network capacity; packet capture model; slotted Aloha capacity; slotted Aloha networks; Error analysis; Fading; Interference; Modulation coding; Packet radio networks; Protocols; Rayleigh channels; Signal to noise ratio; Throughput; Wireless communication;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/4234.846496