MA Bin, WANG Hong-ming, XIE Xian-zhong. An Improved Wideband Compressed Spectrum Sensing Scheme Based on Binomial Distribution[J]. Acta Electronica Sinica, 2020, 48(2): 243-248.
MA Bin, WANG Hong-ming, XIE Xian-zhong. An Improved Wideband Compressed Spectrum Sensing Scheme Based on Binomial Distribution[J]. Acta Electronica Sinica, 2020, 48(2): 243-248. DOI: 10.3969/j.issn.0372-2112.2020.02.003.
Wideband compressed spectrum sensing has the problem of relying on sparsity prior information and high signal reconstruction delay. Therefore
this paper proposes an efficient and reliable wideband compressed spectrum sensing scheme. Firstly
the sparsity estimation model based on the improved confidence interval of binomial distribution is derived. Secondly
using the sparsity estimation upper and lower bounds improves the sparsity adaptive matching pursuit algorithm. Finally
a wideband compressed spectrum sensing scheme is proposed. The simulation results show that the proposed method can accurately estimate the upper and lower bounds of signal sparsity at the same time
improve the efficiency and reliability of spectrum sensing
and accelerate the convergence speed of the algorithm.