Throughput Analysis of Cooperative Access Protocol for Multi-Rate WLANs

Abstract

In this paper, we analyze the throughput performance of a new access protocol, called Cooperative Access with Relay's Data (CARD) for multi-rate wireless local area networks (WLANs). CARD allows remote source nodes to transmit their information at a higher data rate to Access Point (AP) by using intermediate nodes as relays. particularly, a relay node sends its own data packet after forwarding a packet from the original source node, thus to improve system throughput. We also develop a Markov chain model to capture channel conditions. Our analysis considers both ideal and error-prone channel conditions. Analytical results are verified by computer simulations and show significance improvement in the system throughput.

A Novel Adaptive Distributed Cooperative Relaying MAC Protocol for Vehicular Networks

“…Therefore the relay node selection schemes shown in the above both approaches are not optimal for vehicular networks, Other relative work includes [1] and [14]. The main observation in [1] indicates that the performance of cooperative relaying is appreciably degraded by transmission directionality, such as directional antennas with a sufficiently narrow beam, while [14] theoretically analyzed the performance of the cooperative relaying MAC protocol by Markov chain.…”