DocumentCode :
137004
Title :
Soft real time implementation of a Cognitive Radio testbed for frequency hopping primary satisfying QoS requirements
Author :
Jain, Abhishek ; Sharma, Vishal ; Amrutur, Bharadwaj
Author_Institution :
Dept. of ECE, Indian Inst. of Sci., Bangalore, India
fYear :
2014
fDate :
Feb. 28 2014-March 2 2014
Firstpage :
1
Lastpage :
6
Abstract :
The Cognitive Radio (CR) is a promising technology which provides a novel way to subjugate the issue of spectrum underutilization caused due to the fixed spectrum assignment policies. In this paper we report the design and implementation of a soft-real time CR MAC, consisting of multiple secondary users, in a frequency hopping (FH) primary scenario. This MAC is capable of sensing the spectrum and dynamically allocating the available frequency bands to multiple CR users based on their QoS requirements. As the primary is continuously hopping, a method has also been implemented to detect the hop instant of the primary network. Synchronization usually requires real time support, however we have been able to achieve this with a soft-real time technique which enables a fully software implementation of CR MAC layer. We demonstrate the wireless transmission and reception of video over this CR testbed through opportunistic spectrum access. The experiments carried out use an open source software defined radio package called GNU Radio and a basic radio hardware component USRP.
Keywords :
access protocols; cognitive radio; diversity reception; frequency hop communication; quality of service; radio spectrum management; signal detection; software radio; GNU radio; QoS requirements; USRP; basic radio hardware component; cognitive radio technology; cognitive radio testbed; fixed spectrum assignment policies; frequency hopping primary scenario; multiple secondary users; open source software defined radio package; opportunistic spectrum access; soft real time implementation; soft-real time CR MAC; spectrum sensing; spectrum underutilization; wireless reception; wireless transmission; Bandwidth; Cognitive radio; Delays; Sensors; Streaming media; Vectors; Cognitive radio (CR); Frequency hopping (FH); GNU Radio; Opportunistic Spectrum Access; Python; Spectrum sensing; Universal Software Radio Peripheral (USRP);
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Communications (NCC), 2014 Twentieth National Conference on
Conference_Location :
Kanpur
Type :
conf
DOI :
10.1109/NCC.2014.6811248
Filename :
6811248
Link To Document :
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