Title :
Random access with multipacket reception and adaptive filtering
Author :
Ghanbarinejad, Majid ; Schlegel, Christian ; Khabbazian, Majid
Author_Institution :
Dept. of Elec. & Comp. Eng., Univ. of Alberta, Edmonton, AB, Canada
Abstract :
A probabilistic medium-access control (MAC) protocol is proposed for an uncoordinated network of nodes with multipacket reception (MPR) capability at the receiver. The protocol uses binary feedback at the end of each time slot and uses an extended Kalman filter (EKF) to compute an estimate of the number of currently active nodes in the service area. The estimate is then used to optimize the expected system throughput by adjusting the medium access probability of each node. Simulations show that the proposed MAC protocol succeeds in tracking the number of nodes and achieving near-optimal throughput performance.
Keywords :
Kalman filters; access protocols; adaptive filters; feedback; filtering theory; nonlinear filters; MAC protocol; adaptive filtering; extended Kalman filter; medium access probability; multipacket reception; multipacket reception capability; near-optimal throughput performance; probabilistic medium-access control protocol; random access; Approximation methods; Equations; Interference; Mathematical model; Receivers; Signal to noise ratio; Throughput;
Conference_Titel :
Global Communications Conference (GLOBECOM), 2014 IEEE
Conference_Location :
Austin, TX
DOI :
10.1109/GLOCOM.2014.7037469
