Mixed-Signal Parallel Compressive Spectrum Sensing for Cognitive Radios
2010 ◽
Vol 2010
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pp. 1-10
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Keyword(s):
Wideband spectrum sensing for cognitive radios requires very demanding analog-to-digital conversion (ADC) speed and dynamic range. In this paper, a mixed-signal parallel compressive sensing architecture is developed to realize wideband spectrum sensing for cognitive radios at sub-Nqyuist rates by exploiting the sparsity in current frequency usage. Overlapping windowed integrators are used for analog basis expansion, that provides flexible filter nulls for clock leakage spur rejection. A low-speed experimental system, built with off-the-shelf components, is presented. The impact of circuit nonidealities is considered in detail, providing insight for a future integrated circuit implementation.
2013 ◽
Vol 62
(7)
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pp. 1900-1908
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Keyword(s):
2015 ◽
Vol 19
(7)
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pp. 1137-1140
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Keyword(s):
2012 ◽
Vol 11
(7)
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pp. 2596-2605
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Keyword(s):
2015 ◽
Vol 22
(3)
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pp. 332-335
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Keyword(s):
2011 ◽
Vol 18
(1)
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pp. 35-38
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2014 ◽
Vol 13
(11)
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pp. 6410-6421
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Keyword(s):