Open Access
Distributed Source Coding in Wireless Sensor Networks
Johannes Karlsson
- 01 Jan 2006
TL;DR: It is shown that the proposed system finds a way of using the correlation of the sources to both reduce the quantization distortion and introduce protection against channel errors.
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Abstract: The advent of wireless sensor networks adds new requirements when designing communication schemes. Not only should the sensor nodes be energy efficient but they should preferably also be small and cheap. In the light of this a joint source-channel coding design that is utilizing a basic method of distributed source coding is investigated. An iterative algorithm for designing such system for two correlated Gaussian sources is proposed and evaluated. It is shown that the proposed system finds a way of using the correlation of the sources to both reduce the quantization distortion and introduce protection against channel errors.
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TL;DR: The minimum number of bits per character R_X and R_Y needed to encode these sequences so that they can be faithfully reproduced under a variety of assumptions regarding the encoders and decoders is determined.