Browse > Article

An Improved Entropy Based Sensing by Exploring Phase Information  

Lee, Haowei (Wireless Transmission Lab, The Graduate School of Information Technology & Telecommunications, Inha University)
Gu, Junrong (Wireless Transmission Lab, The Graduate School of Information Technology & Telecommunications, Inha University)
Sohn, Sung-Hwan (Wireless Transmission Lab, The Graduate School of Information Technology & Telecommunications, Inha University)
Jang, Sung-Jeen (Wireless Transmission Lab, The Graduate School of Information Technology & Telecommunications, Inha University)
Kim, Jae-Moung (Wireless Transmission Lab, The Graduate School of Information Technology & Telecommunications, Inha University)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.35, no.9A, 2010 , pp. 896-905 More about this Journal
Abstract
In this paper, we present a new sensing method based on phase entropy. Entropy is a measurement which quantifies the information content contained in a signal. For the PSK modulation, the information is encoded in the phase of the transmitted signal. By focusing on phase, more information is collected during sensing, which suggests a superior performance. The sensing based on Phase entropy is not limited to PSK signal. We generalize it to PAM signal as well. It is more advantageous to detect the phase. The simulation results have confirmed the excellent performance of this novel sensing algorithm.
Keywords
Spectrum Sensing; Entropy; Phase; Cognitive Radio;
Citations & Related Records
연도 인용수 순위
  • Reference
1 GHOZZIM, MARX F., DOHLER M., PALICOT J.: "Cyclostatilonariltybased test for detection of vacant frequency bands". 1st Int. Corf. Cognitive Radio Oriented Wireless Networks and Communications, June 2006, pp. 1-5
2 KIM K., AKBAR I.A., BAE K.K., UM J.-S., SPOONER C.M., REED J.H.: "Cyclostationary approaches to signal detection and classification in cognitive radio". DySPAN2007, April 2007, pp.212-215
3 Santosh V. Nagaraj, "Entropy-based spectrum sensing in cognitive radio", Signal Processing, Vol.89, Issue 2, February 2009, pp.174-180.   DOI   ScienceOn
4 Shannon, C.E. (1948), "Mathematical Theory of Communication", Bell System Technical Journal, July & October 1948, Vol.27, pp.379-423 & 623-656.
5 Andrea Goldsmith, "Wireless Communi­cations", 2nd ed, Cambridge University Press. 2005
6 M. S. Hughes, "Analysis of Digitized Waveforms Using Shannon Entropy", JASA. 1993, Vol.93, No.2, pp.892-906.   DOI   ScienceOn
7 Jaynes, E.T. (1957). "Information Theory and Statistical Mechanics", Physical Review Series II 106 (4): 620-630
8 J.-F.Bercher, C.Vignat, "Estimating the entropy of a signal with applications", IEEE Trans. Signal Process, June 2000, pp.1687-1694.
9 R.Wieczorkowski and P. Grzegorzewski, "Entropy estimators-Improvements and com­parisons", Commun. Stat-Simul. Comput. 1999, Vol.28, No.2, pp.541-567.   DOI   ScienceOn
10 Yunxia Chen, Qing Zhao and Ananthram Swami, "Joint Design and Separation Principle for Opportunistic Spectrum Access in the Presence of Sensing Errors", IEEE trans. Information Theory, May 2008, Vol.54, Issue 5, pp.2053-2071.
11 Junrong Gu, Sung Hwan Sohn and Jae Moung Kim, "Chaotic Characteristic Based Sensing for Cognitive Radio", WiCOM 2009, pp. 1-4.
12 URKOWITZ H.: 'Energy detection of unknown deterministic signals', Proc. IEEE, 1967, 55, pp.523-531
13 FCC, "Notice of Proposed Rulemaking, in the Matter of Unlicensed Operation in the TV Broadcast Bands (ET Docket no. 04-186) and Additional Spectrum for Unlicensed Devices below 900 MHz and in the 3 GHz BandtET Docket no. 02-380), FCC 04-113," May 2004.
14 J. Mitola, "Cognitive radio: An integrated agent architecture for software defined radio", Ph.D. Dissertation, Royal Institute of Technology, 2000.
15 D. Cabric, S.M. Mishra, and R. W. Brodersen, "Implementation issues in spectrum sensing for cognitive radios", Proc, IEEE Dy SPAN, 2005, pp.124-130.
16 DIGHAM F.F., ALOUINI M.S., SIMON M.K.: 'On the energy detection of unknown signals over fading channels', IEEE Trans. Commun,, 2007, 55, pp.21-24   DOI