Abstract
Reception diversity has considered as an effective way to improve the system performance. In this paper, we present a real-time hardware implementation of spectrum sensing based energy detection (ED) with multi-receive antenna technique. We only focused on Selection Combining (SC) technique due to low complexity in Radio Frequency (RF) chain (need only one RF chain). The system performance is evaluated in real-time hardware implementation over Rayleigh environment based FPGA (Field Programmable Gate Array) platform. The DVB-T (Digital Video Broadcasting - Terrestrial) signal is designed as primary signal. This is specified in draft IEEE 802.22 WRAN standard for re-utilization the TV frequency band. The target FPGA board is Stratix II EP2S180. The fixed point 32 bits (fraction: 22.10) is chosen for calculation in FPGA model. The empirical results showed that the performance of ED with selection combining technique was improved remarkably. Thus, we conclude that selection combining techniques can be used to overcome the drawbacks of ED over Rayleigh fading environment.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Yucek, T., Arslan, H.: A survey of spectrum sensing algorithms for cognitive radio applications. IEEE Communications Surveys & Tutorials 11(1), 116–130 (2009)
Han, N., Shon, S., Chung, J.H., Kim, J.M.: Spectral Correlation Based Signal Detection Method for Spectrum Sensing in IEEE 802. 22 WRAN Systems, pp. 1765–1770 (2006)
Ciftci, S., Torlak, M.: A Comparison of Energy Detectability Models for Cognitive Radios in Fading Environments. Wireless Personal Communications 68(3), 553–574 (2012)
Gavrilovska, L., Atanasovski, V.: Spectrum Sensing Framework for Cognitive Radio Networks. Wireless Personal Communications 59(3), 447–469 (2011)
J.G., Proakis, S.M.: Digital communications, 5th edn. McGraw-Hill (2008)
Urkowitz, H.: Energy Detection of Unknown Deterministic Signals. Proccedings of the IEEEÂ 55(4) (1967)
Nuttall, A.H.: Some integrals involving the Q-function (1974)
I.S.G., Ryzhik, I.M.: Table of Integrals, Series, and Products, 6th edn., Section 9.2 (2000)
S.K., Johnson, N.B., N.L.: Continuous Univariate Distributions, vol. 2. John Wiley and Sons, New York (1995)
Proakis, J.G.: Digital Communications, 4th edn. McGrawHill (2001)
Digham, F.F., Alouini, M.-S., Simon, M.K.: On the energy detection of unknown signals over fading channels. IEEE Transactions on Communications 55, 21–24 (2007)
Broadcasting, D.V.: EN 300 744 - V1.6.1 - Digital Video Broadcasting (DVB); Framing structure, channel coding and modulation for digital terrestrial television, vol. 1, pp. 1–66 (2009)
IEEE Standard for Information Technology–Telecommunications and information exchange between systems Wireless Regional Area Networks (WRAN)–Specific requirements (2011)
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2014 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Nguyen, T.T., Nguyen, T.M., Dang, K.L., Nguyen, P.H. (2014). Selection Combining Technique and Its Real-Time FPGA Implementation for Spectrum Sensing Efficiency Improvement in Cognitive Radio. In: Zelinka, I., Duy, V., Cha, J. (eds) AETA 2013: Recent Advances in Electrical Engineering and Related Sciences. Lecture Notes in Electrical Engineering, vol 282. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-41968-3_19
Download citation
DOI: https://doi.org/10.1007/978-3-642-41968-3_19
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-41967-6
Online ISBN: 978-3-642-41968-3
eBook Packages: EngineeringEngineering (R0)