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In a One-Bit Rush: Low-Latency Wireless Spectrum Monitoring with Binary Sensor Arrays. (arXiv:1802.03180v1 [eess.SP])
来源于:arXiv
Detecting the presence of an active random wireless source with minimum
latency utilizing array signal processing is considered. The problem is studied
under the constraint that the analog-to-digital conversion at each radio sensor
is restricted to the reading of the analog receive signal sign. We formulate
the digital signal processing task as a sequential hypothesis test in simple
form. To circumvent the intractable log-likelihood ratio of the resulting
multivariate binary array data, a reduced model representation within the
exponential family is employed. This approach allows us to design a sequential
test and to analyze its analytic performance along classical arguments. In the
context of wireless spectrum monitoring for satellite-based navigation and
synchronization systems, we study the achievable processing latency,
characterized by the average sample number, as a function of the antennas in
use. The practical feasibility and potential of the discussed low-complexity
sensing an 查看全文>>