Title :
On the asymptotic optimality of coded slotted Aloha random access systems
Author :
Angel, Guillermo Del ; Fine, Terrence L.
Author_Institution :
Aware Inc., Bedford, MA, USA
Abstract :
We consider a slotted Aloha random access system with combined coding and power/retransmission control. Under suitable conditions, if M or fewer users transmit simultaneously, they are successfully decoded with high probability, with M depending on coding rate and SINR. We show then that, among any realizable random access protocol, slotted Aloha´s spectral efficiency and maximum throughput are asymptotically optimal as the coding rate vanishes.
Keywords :
access protocols; encoding; optimisation; probability; random processes; AWGN; SINR; asymptotically optimal throughput; coded slotted Aloha random access systems; coding rate; maximum throughput; power/retransmission control; probability; random access protocol; spectral efficiency; Access protocols; Additive white noise; Bandwidth; Control systems; Decoding; Gaussian noise; History; Neodymium; Signal to noise ratio; Throughput;
Conference_Titel :
Information Theory, 2002. Proceedings. 2002 IEEE International Symposium on
Print_ISBN :
0-7803-7501-7
DOI :
10.1109/ISIT.2002.1023423
