Title :
A novel SIR-based access scheme for multi-packet communication in 802.11 networks
Author :
Babich, F. ; Comisso, M. ; Dorni, A.
Author_Institution :
Dipt. di Ing. Ind. e dell´´Inf., Univ. of Trieste, Trieste, Italy
Abstract :
This paper proposes a novel Medium Access Control (MAC) protocol for enabling multiple simultaneous communications in 802.11 networks where the nodes can use adaptive antenna arrays. The presented scheme is backward compatible with the 802.11 standard and is designed for heterogeneous scenarios, where legacy and non-legacy nodes equipped with different antenna systems can coexist. The access rules are based on a local but accurate Signal-to-Interference Ratio (SIR) estimation and on the adoption of Low Density Parity Check (LDPC) codes, which enable each node to reliably estimate the result of the transmission attempt of all active nodes. The proposed scheme is compared to a previously developed one in noisy and multipath-fading environments.
Keywords :
IEEE standards; access protocols; adaptive antenna arrays; interference suppression; packet radio networks; parity check codes; wireless LAN; 802.11 network; LDPC code; MAC protocol; SIR-based access scheme; adaptive antenna array; antenna system; legacy node; low density parity check; medium access control; multipacket communication; multipath fading; nonlegacy node; signal-to-interference ratio; Antennas; Estimation; IEEE 802.11 Standards; Network topology; Protocols; Throughput; Topology; IEEE 802.11; Wireless networks; medium access control; multi-packet communication; smart antenna systems;
Conference_Titel :
Communications (ICC), 2012 IEEE International Conference on
Conference_Location :
Ottawa, ON
Print_ISBN :
978-1-4577-2052-9
Electronic_ISBN :
1550-3607
DOI :
10.1109/ICC.2012.6363683
