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Wyner-Ziv video coding (WZVC) is very attractive for low power wireless video sensors. In this paper we show that how the transmission bit-rate of WZVC can be further reduced when multiple uncorrelated wireless receiving points are deployed at the decoder. This is different from classical SIMO in the sense of cross layer coding is deployed. When the wireless channel degrades, decoder is fed with an...
Congestion in Wireless Sensor Networks (WSN) can be a severe problem, as it causes a plethora of malfunctions such as packet loss, lower throughput, energy inefficiency, and short lifetime. As a result, the performance of the whole network is subject to undesirable change; an issue that renders congestion control an issue of uttermost importance for such networks. As far as data-collection applications...
In this paper, we introduce a novel routing algorithm which is based on ant colony system. The objective of this novel algorithm is to solve the problem of energy and congestion control on wireless sensor network routing process. This novel algorithm is able to achieve better load balance and prolong the network lifetime. In this novel algorithm we combine the pheromone released by multi-ant colonies...
Wireless sensor networks are characterized by centralized data gathering, multi-hop communication and many to one traffic pattern. These three characteristics can lead to severe packet collision, network congestion and packet loss, and even result in hot-spots of energy consumption thus causing premature death of sensor nodes and entire network. The proposed load balance data gathering algorithm classifies...
Distributed video coding (DVC) has been featured by exploiting the video statistics, partially or totally at the decoder. Wireless sensor networks are supposed to have lesser complexity encoders at the expense of higher decoder complexity. Therefore DVC is more suitable to video transmission over wireless sensor networks compared to conventional video coding. Current research work on DVC is conducted...
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