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Interference cancellation and energy harvesting techniques for cooperative spectrum sharing cognitive radio systems

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dc.contributor.author Jain, Neha
dc.contributor.author Bohara, Vivek Ashok (Advisor)
dc.date.accessioned 2015-12-07T09:18:19Z
dc.date.available 2015-12-07T09:18:19Z
dc.date.issued 2015-12-07T09:18:19Z
dc.identifier.uri https://repository.iiitd.edu.in/jspui/handle/123456789/379
dc.description.abstract With the exponential increase in wireless applications, there arises the need to utilize the spectrum more e ciently. Cooperative spectrum sharing (CSS) schemes have been proposed as a viable framework for cognitive radio where, an unlicensed (secondary) user can access the spectrum of licensed (primary) user, on the condition that unlicensed user will help the licensed user in achieving the target rate of communication. While sharing the spectrum, primary user always has higher priority. In the proposed work, a two phase CSS scheme is proposed, where secondary's transmitter equipped with multiple antennas uses transmit antenna selection to improve the primary's performance by reducing the interference level of secondary signal at primary receiver. Moreover, a three phase interference cancellation CSS scheme using STBC (Space time block code) is also proposed. It has been shown that the proposed scheme helps in achieving diversity gain of three and two for primary and secondary system respectively. Apart from above, we have also proposed a novel approach to solve the power issues in secondary user by utilizing technique such as RF (radio frequency) energy harvesting. Speci cally, we have shown that signi cant performance gains can be obtained for both primary and secondary user by using RF energy harvesting. en_US
dc.language.iso en en_US
dc.subject Cooperative spectrum sharing en_US
dc.subject Cognitive radio en_US
dc.subject Transmit antenna selection en_US
dc.subject Quality of service en_US
dc.subject Space time block coding en_US
dc.subject Diversity en_US
dc.subject Interference cancellation en_US
dc.subject Energy harvesting en_US
dc.subject Wireless sensor network en_US
dc.title Interference cancellation and energy harvesting techniques for cooperative spectrum sharing cognitive radio systems en_US
dc.type Thesis en_US

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