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Rate and power allocation under the pairwise distributed source coding constraint

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2 Author(s)
Shizheng Li ; Dept. of Electr. & Comput. Eng., Iowa State Univ., Ames, IA, USA ; Ramamoorthy, A.

We consider the problem of rate and power allocation for a sensor network under the pairwise distributed source coding constraint. For noiseless source-terminal channels, we show that the minimum sum rate assignment can be found by finding a minimum weight arborescence in an appropriately defined directed graph. For orthogonal noisy source-terminal channels, the minimum sum power allocation can be found by finding a minimum weight matching forest in a mixed graph. Numerical results are presented for both cases showing that our solutions always outperform previously proposed solutions. The gains are considerable when source correlations are high.

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Communications, IEEE Transactions on  (Volume:57 ,  Issue: 12 )