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JSAC
2011

Goodput Enhancement of VANETs in Noisy CSMA/CA Channels

7 years 10 months ago
Goodput Enhancement of VANETs in Noisy CSMA/CA Channels
— The growing interest in vehicular ad hoc networks (VANETs) enables decentralized traveler information systems to become more feasible and effective in Intelligent Transportation Systems (ITS). Major challenges in such network environments include varying path characteristics and vulnerable channel quality resulting from dynamic traffic conditions and the design of the road. This paper demonstrates a feasible methodology that can enhance intervehicle information dissemination using dynamic optimal fragmentation with rate adaptation algorithm (DORA). DORA achieves maximum goodput in wireless mobile networks by computing a fragmentation threshold and transmitting optimal sized packets with maximum transfer rates. To estimate the SNR in the model, an adaptive on-demand UDP estimator is designed to reduce estimation overhead. Several test-beds were developed to evaluate DORA’s performance in channel estimation accuracy, ad hoc network throughput, and vehicle-to-vehicle network through...
Yusun Chang, Christopher P. Lee, John A. Copeland
Added 14 May 2011
Updated 14 May 2011
Type Journal
Year 2011
Where JSAC
Authors Yusun Chang, Christopher P. Lee, John A. Copeland
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