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2008

Joint source coding, routing and power allocation in wireless sensor networks

8 years 4 months ago
Joint source coding, routing and power allocation in wireless sensor networks
This paper proposes a cross-layer optimization framework for the wireless sensor networks. In a wireless sensor network, each sensor makes a local observation of the underlying physical phenomenon and sends a quantized version of the observation to a central location via wireless links. As the sensor observations are often partial and correlated, the network performance is a complicated and nonseparable function of individual data rates at each sensor. In addition, due to the shared nature of wireless medium, nearby transmissions often interfere with each other. Thus, the traditional "bit-pipe" model for network link capacity no longer holds. This paper deals with the joint optimization of source quantization, routing, and power control in a wireless sensor network. We follow a separate source and channel coding approach and show that the overall network optimization problem can be naturally decomposed into a source coding subproblem at the application layer and a wireless po...
Jun Yuan, Wei Yu
Added 15 Dec 2010
Updated 15 Dec 2010
Type Journal
Year 2008
Where TCOM
Authors Jun Yuan, Wei Yu
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