Wireless sensor networks based on the generalized approach to signal processing with fading channels and receive antenna array
Vyacheslav P. Tuzlukov, Wonsik Yoon, Yong Deak Kim · International Conference on Signal Processing · 2004
We consider M-ary wireless sensor network based on the generalized approach to signal processing in the presence of noise [1-5] with K sensor nodes over a space diversity channel, consisting of a single transmit antenna for each sensor node and multiple receive antennas. We examine the phase coherent wavefront fading model. In the case of wavefront fading, the fade is constant across the face of the receive antenna and we can associate an angle of arrival to the signal. We present a variation of the mutiple-signal classification (MUSIC) algorithm [6] for estimating this parameter and use it to form a spatial beam. We develop the detection strategy based on the generalized approach to signal processing in noise. We then consider blind extensions of the generalized detector based on subspace tracking, which do not require a prior model for the interfering sensor node's signals.