Mixed-Signal Parallel Compressive Spectrum Sensing for Cognitive Radios Academic Article uri icon

abstract

  • 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.

published proceedings

  • International Journal of Digital Multimedia Broadcasting

author list (cited authors)

  • Yu, Z., Chen, X. i., Hoyos, S., Sadler, B. M., Gong, J., & Qian, C.

citation count

  • 16

complete list of authors

  • Yu, Zhuizhuan||Chen, Xi||Hoyos, Sebastian||Sadler, Brian M||Gong, Jingxuan||Qian, Chengliang

publication date

  • January 2010