TY - JOUR
T1 - Recent Advances on Sub-Nyquist Sampling-Based Wideband Spectrum Sensing
AU - Fang, Jun
AU - Wang, Bin
AU - Li, Hongbin
AU - Liang, Ying Chang
N1 - Publisher Copyright:
© 2002-2012 IEEE.
PY - 2021/6
Y1 - 2021/6
N2 - Cognitive radio (CR) is a promising technology enabling efficient utilization of the spectrum resource for future wireless systems. As future CR networks are envisioned to operate over a wide frequency range, advanced wideband spectrum sensing (WBSS) capable of quickly and reliably detecting idle spectrum bands across a wide frequency span is essential. In this article, we provide an overview of recent advances on sub-Nyquist sampling-based WBSS techniques, including compressed sensing-based methods and compressive covariance sensing-based methods. An elaborate discussion of the pros and cons of each approach is presented, along with some challenging issues for future research. A comparative study suggests that the compressive covariance sensing-based approach offers a more competitive solution for reliable real-time WBSS.
AB - Cognitive radio (CR) is a promising technology enabling efficient utilization of the spectrum resource for future wireless systems. As future CR networks are envisioned to operate over a wide frequency range, advanced wideband spectrum sensing (WBSS) capable of quickly and reliably detecting idle spectrum bands across a wide frequency span is essential. In this article, we provide an overview of recent advances on sub-Nyquist sampling-based WBSS techniques, including compressed sensing-based methods and compressive covariance sensing-based methods. An elaborate discussion of the pros and cons of each approach is presented, along with some challenging issues for future research. A comparative study suggests that the compressive covariance sensing-based approach offers a more competitive solution for reliable real-time WBSS.
UR - http://www.scopus.com/inward/record.url?scp=85113213594&partnerID=8YFLogxK
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U2 - 10.1109/MWC.001.2000353
DO - 10.1109/MWC.001.2000353
M3 - Article
AN - SCOPUS:85113213594
SN - 1536-1284
VL - 28
SP - 115
EP - 121
JO - IEEE Wireless Communications
JF - IEEE Wireless Communications
IS - 3
M1 - 9448009
ER -