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This paper addresses a total transmission power minimization problem in single-sink data gathering wireless sensor network. We propose a distributed algorithm for solving the convex problem with partial dual decomposition approach by jointly optimizing the routing and the power allocation. We assume orthogonal multiple access communications under Rayleigh fading. By applying dual decomposition for...
This paper proposes a technique to compress the data with equal length code words. A novel source coding technique, multiple label mapping (MLM), is introduced. With MLM it is possible to produce a source code which uses equal length code words. Moreover, it is shown that with the MLM technique, it is possible to achieve near limit compression without using variable length coding (VLC). However this...
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