Real time hardware implementable spectrum sensor for cognitive radio applications

G V, Chaitanya and P, Rajalakshmi and Desai, U B (2012) Real time hardware implementable spectrum sensor for cognitive radio applications. In: 9th International Conference on Signal Processing and Communications, 22-25, July 2012, Bangalore; India.

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Abstract

A fundamental problem for Cognitive Radios (CR) is spectrum sensing, secondary users need to reliably detect weak primary signals of possibly different types over a targeted wide frequency band in order to identify spectral holes for opportunistic communications. In this paper energy detection technique based on Neyman-Pearson criterion is implemented to detect the presence of deterministic primary user (PU) signals in the channel. We designed a hardware implementable energy detector on a wireless testbed software defined radio (SDR) using USRP2 and an experimental study is carried out to measure the required SNR to achieve the desired probability of detection and false alarm. A comparative study was also made between the SNRs obtained from frequency and time domain analysis.

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IITH Creators:
IITH CreatorsORCiD
P, RajalakshmiUNSPECIFIED
Desai, U BUNSPECIFIED
Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Cognitive Radio; Energy detection; FPGA; Hardware Co-simulation; SDR; Spectrum Sensing
Subjects: Others > Electronic imaging & Singal processing
Divisions: Department of Electrical Engineering
Depositing User: Mr. Siva Shankar K
Date Deposited: 28 Oct 2014 07:09
Last Modified: 24 Aug 2015 07:06
URI: http://raiith.iith.ac.in/id/eprint/435
Publisher URL: http://dx.doi.org/10.1109/SPCOM.2012.6290024
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