An efficient water-filling solution for linear coherent joint estimation

作者：Guo Wenbin^*; Xiao Jin Jun; Cui Shuguang

来源：IEEE Transactions on Signal Processing, 2008, 56(10): 5301-5305.

DOI：10.1109/TSP.2008.928694

• linear coherent estimation
• water-filling
• wireless sensor networks

We consider a sensor network with distributed sensors observing multiple sources and transmitting local observations over a Gaussian multiple access channel to a fusion center where the signals are coherently combined. We develop a joint estimation method based on the linear analog forwarding scheme at each local node, which can be cast as a nonlinear optimization problem. By minimizing the gap to the performance benchmark, we obtain a closed-form solution that follows the water-filling strategy. Numerical results are given to demonstrate the average estimation performance in a fading communication environment.

• 出版日期2008-10
• 单位北京大学