TY - JOUR
T1 - Multiantenna-Assisted Wideband Spectrum Sensing Based on Sub-Nyquist Sampling
AU - Wang, Jilin
AU - Li, Qing
AU - Duan, Huiping
AU - Fang, Jun
AU - Ren, Zhi
AU - Li, Hongbin
N1 - Publisher Copyright:
© 2012 IEEE.
PY - 2021/4
Y1 - 2021/4
N2 - We consider the problem of wideband spectrum sensing, where a multi-antenna secondary user (SU) attempts to identify the frequency locations of a number of single-antenna primary users (PUs)' transmissions that spread over a wide frequency band. To overcome the sampling rate bottleneck, we propose a new sub-Nyquist sampling architecture as well as a compressed power spectrum estimation method whose objective is to reconstruct the power spectrum of the transmitted signals from PUs. The proposed sub-Nyquist sampling scheme has a simple structure, and a power spectrum recovery analysis shows that the proposed method can achieve a significant sampling rate reduction, without imposing a sparse constraint on the frequency band under monitoring. Simulation results are presented to show the effectiveness of the proposed method.
AB - We consider the problem of wideband spectrum sensing, where a multi-antenna secondary user (SU) attempts to identify the frequency locations of a number of single-antenna primary users (PUs)' transmissions that spread over a wide frequency band. To overcome the sampling rate bottleneck, we propose a new sub-Nyquist sampling architecture as well as a compressed power spectrum estimation method whose objective is to reconstruct the power spectrum of the transmitted signals from PUs. The proposed sub-Nyquist sampling scheme has a simple structure, and a power spectrum recovery analysis shows that the proposed method can achieve a significant sampling rate reduction, without imposing a sparse constraint on the frequency band under monitoring. Simulation results are presented to show the effectiveness of the proposed method.
KW - Wideband spectrum sensing
KW - power spectrum estimation
KW - sub-Nyquist sampling
UR - http://www.scopus.com/inward/record.url?scp=85098772291&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85098772291&partnerID=8YFLogxK
U2 - 10.1109/LWC.2020.3044291
DO - 10.1109/LWC.2020.3044291
M3 - Article
AN - SCOPUS:85098772291
SN - 2162-2337
VL - 10
SP - 795
EP - 799
JO - IEEE Wireless Communications Letters
JF - IEEE Wireless Communications Letters
IS - 4
M1 - 9292941
ER -