Signal Assemblage Based Wideband Spectrum Sensing for OFDM Cognitive Radios

被引：0

作者：

Qing, Han ^{[1
]}

Chen, Siji ^{[1
]}

Ali, Md Liton ^{[1
]}

Shen, Bin ^{[1
]}

机构：

[1] Chongqing Univ Posts & Telecommun CQUPT, Sch Commun & Informat Engn SCIE, Chongqing 400065, Peoples R China

来源：

2019 21ST INTERNATIONAL CONFERENCE ON ADVANCED COMMUNICATION TECHNOLOGY (ICACT): ICT FOR 4TH INDUSTRIAL REVOLUTION | 2019年

关键词：

Power-law detector; signal assemblage; cognitive radio; energy detector; SOURCE ENUMERATION; ENERGY DETECTION; CRITERION;

D O I：

10.23919/icact.2019.8701908

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

This paper investigates power-law detector (PLD) based wideband spectrum sensing schemes for OFDM cognitive radios. By exploiting signal assemblage (SA) feature of the primary user (PU), we first propose a heuristic iterative threshold test (HITT) to roughly detect the SA set boundary of the noise and PU signal; Subsequently, a signal assemblage cardinality measuring (SACM) method is developed to refine the HITT decisions. Operating in SA-based wideband sensing manner, the PLD greatly overcomes the ambiguity in differentiating weak PU subcarriers from noise and significantly meliorates the sensing performance, compared with the non-SA methods.

引用

页码：488 / 491

页数：4

共 14 条

[1]

Boroujeny B. F., 2008, IEEE COMMUN MAG, V46, P80

[2] Equal Gain Combining for Cooperative Spectrum Sensing in Cognitive Radio Networks [J].

Hamza, Doha ;

Aissa, Sonia ;

Aniba, Ghassane .

IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, 2014, 13 (08) :4334-4345

[3] Source Enumeration Via MDL Criterion Based on Linear Shrinkage Estimation of Noise Subspace Covariance Matrix [J].

Huang, Lei ;

So, H. C. .

IEEE TRANSACTIONS ON SIGNAL PROCESSING, 2013, 61 (19) :4806-4821

[4] Spectrum Sensing in Wideband OFDM Cognitive Radios [J].

Hwang, Chien-Hwa ;

Lai, Guan-Long ;

Chen, Shih-Chang .

IEEE TRANSACTIONS ON SIGNAL PROCESSING, 2010, 58 (02) :709-719

[5] Information theoretic criterion-based spectrum sensing for cognitive radio [J].

Liu, S. ;

Shen, J. ;

Zhang, R. ;

Zhang, Z. ;

Liu, Y. .

IET COMMUNICATIONS, 2008, 2 (06) :753-762

[6] Flexible Detection Criterion for Source Enumeration in Array Processing [J].

Lu, Zhihua ;

Zoubir, Abdelhak M. .

IEEE TRANSACTIONS ON SIGNAL PROCESSING, 2013, 61 (06) :1303-1314

[7] Optimal Multiband Joint Detection for Spectrum Sensing in Cognitive Radio Networks [J].

Quan, Zhi ;

Cui, Shuguang ;

Sayed, Ali H. ;

Poor, H. Vincent .

IEEE TRANSACTIONS ON SIGNAL PROCESSING, 2009, 57 (03) :1128-1140

[8] SNR Walls for Signal Detection [J].

Tandra, Rahul ;

Sahai, Anant .

IEEE JOURNAL OF SELECTED TOPICS IN SIGNAL PROCESSING, 2008, 2 (01) :4-17

[9] ENERGY DETECTION OF UNKOWN DETERMINISTIC SIGNALS [J].

URKOWITZ, H .

PROCEEDINGS OF THE INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS, 1967, 55 (04) :523-+

[10] All-purpose and plug-in power-law detectors for transient signals [J].

Wang, Z ;

Willett, PK .

IEEE TRANSACTIONS ON SIGNAL PROCESSING, 2001, 49 (11) :2454-2466

← 1 2 →