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Journal of Computer Networks and Communications
Volume 2012 (2012), Article ID 837495, 8 pages
http://dx.doi.org/10.1155/2012/837495
Research Article

On Spectrum Sensing for TV White Space in China

1Department of Communication Technologies, University of Duisburg-Essen, 47057 Duisburg, Germany
2Communication Technology Research Department, Huawei Tech. Co., Ltd, Chengdu, Sichuan Province 610041, China
3Department of Electrical and Computer Engineering, Utah State University, Logan, UT 84322, USA

Received 13 February 2012; Accepted 7 May 2012

Academic Editor: Luca Ronga

Copyright © 2012 Christian Kocks et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

In the field of wireless communications the idea of cognitive radio is of utmost interest. Due to its advantageous propagation properties, the TV white space can be considered to become the first commercial application of cognitive radio. It allows the usage of secondary communication systems at non-occupied frequency bands. Within this paper, spectrum sensing algorithms are introduced for the three predominant Chinese TV standards DTMB, CMMB, and PAL-D/K. A prototype platform is presented and its underlying architecture based on a combination of DSP and FPGA is illustrated including the setup of the cognitive radio application. Furthermore, the performance of the sensing algorithms implemented on the prototype platform is shown in comparison to simulation results.