NDLI: Wideband waveform optimization with energy detector receiver in cognitive radio

Content Provider	IEEE Xplore Digital Library
Author	Zhen Hu Nan Guo Qiu, R.
Copyright Year	2010
Description	Author affiliation: Department of Electrical and Computer Engineering, Center for Manufacturing Research, Tennessee Tech University, Cookeville TN, USA (Zhen Hu; Qiu, R.) \|\| Center for Manufacturing Research, Tennessee Tech University, Cookeville TN, USA (Nan Guo)
Abstract	This paper investigates the transmitted waveform optimization issues for wideband cognitive radio with energy detector receiver. The motivation is to provide a cheap cognitive radio network with simple and cheap cognitive radio receivers. In cognitive radio, a spectral mask for the transmitted waveform is determined upon spectrum sensing, and arbitrary transmitted spectral shaping is required. Meanwhile, the interferences from primary radio should be notched at the secondary receivers. The contribution of this paper is to optimize the cognitive radio communication link by jointly considering the optimization objective, the spectral constraint at the transmitter and the interference cancellation at the receiver. The optimization objective considered here is to maximize captured signal energy within integration window. The optimization problem is formulated as the Quadratically Constrained Quadratic Program (QCQP), which is known as an NP-hard problem. However, after relaxation, QCQP can be solved by using Semidefinite Program (SDP) plus a randomized algorithm. In addition to SDP, a computationally-efficient iterative method is proposed to give the optimal solution for a special situation where the integrator only captures one sample as the decision statistic.
Starting Page	198
Ending Page	203
File Size	1605237
Page Count	6
File Format	PDF
ISBN	9781424458547
e-ISBN	9781424458530
DOI	10.1109/SECON.2010.5453888
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-03-18
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Wideband Detectors Receivers Cognitive radio Constraint optimization Interference constraints Radio transmitters Interference cancellation Energy capture NP-hard problem
Content Type	Text
Resource Type	Article

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2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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