Geodesic
The Performance Analysis of Direct/Cooperative Transmission to Support QoS in WLANs
Computer Science and Information Systems, Tome 11 (2014) no. 3.

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In the past decades, cooperative communications schemes have gained significant attention in wireless networks. The cooperative scheme leads to longer transmission time which can considerably degrade the system performance. We evaluate the saturation throughput and saturation delay of the Markov chain model with direct/cooperative schemes to support QoS in WLANs. Simulation results show that differentiating the contention window size is better than differentiating the arbitration interframe space in terms of throughput and delay.
Keywords: cooperative scheme, throughput, delay, Markov chain model, QoS, WLANs 
@article{CSIS_2014_11_3_a14,
     author = {Chien-Erh Weng and Jyh-Horng Wen and Hsing-Chung Chen and Lie Yang},
     title = {The {Performance} {Analysis} of {Direct/Cooperative} {Transmission} to {Support} {QoS} in {WLANs}},
     journal = {Computer Science and Information Systems},
     publisher = {mathdoc},
     volume = {11},
     number = {3},
     year = {2014},
     url = {http://geodesic.mathdoc.fr/item/CSIS_2014_11_3_a14/}
}
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Chien-Erh Weng; Jyh-Horng Wen; Hsing-Chung Chen; Lie Yang. The Performance Analysis of Direct/Cooperative Transmission to Support QoS in WLANs. Computer Science and Information Systems, Tome 11 (2014) no. 3. http://geodesic.mathdoc.fr/item/CSIS_2014_11_3_a14/