Interference Rejection Combining for Black-space Cognitive Radio Communications

Sudharsan Srinivasan; Markku Renfors

doi:10.1007/978-3-030-05490-8_19

Interference Rejection Combining for Black-space Cognitive Radio Communications

Sudharsan Srinivasan, Markku Renfors

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Scientific › peer-review

1 Citation (Scopus)

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Abstract

This paper focuses on multi-antenna interference rejection combing (IRC) based black-space cognitive radio (BS-CR) operation. The idea of BS-CR is to transmit secondary user (SU) signal in the same frequency band with the primary user (PU) such that SU’s power spectral density is clearly below that of the PU, and no significant interference is inflicted on the PU receivers. We develop a novel blind IRC technique which allows such operation mode for effective reuse of the PU spectrum for relatively short-distance CR communication. We assume that both the PU system and the BS-CR use orthogonal frequency division multiplexing (OFDM) waveforms with common frame structure. In this case the PU interference on the BS-CR signal is strictly flat-fading at subcarrier level. Sample covariance matrix based IRC adaptation is applied during silent gaps in CR operation. During CR transmission, the target signal detection and channel estimation utilize multiple outputs from the IRC process obtained with linearly independent steering vectors. The performance of the proposed IRC scheme is tested considering terrestrial digital TV broadcasting (DVB-T) as the primary service. The resulting interference suppression capability is evaluated with different PU interference power levels, silent gap durations, and CR device mobilities.

Original language	English
Title of host publication	Cognitive Radio Oriented Wireless Networks
Subtitle of host publication	Proceedings of 13th EAI International Conference, CROWNCOM 2018, Ghent, Belgium, September 18–20, 2018
Publisher	Springer
Number of pages	10
Volume	261
ISBN (Electronic)	978-3-030-05490-8
ISBN (Print)	978-3-030-05489-2
DOIs	https://doi.org/10.1007/978-3-030-05490-8_19
Publication status	Published - 2018
Publication type	A4 Article in conference proceedings
Event	International Conference on Cognitive Radio Oriented Wireless Networks - Duration: 1 Jan 1900 → …

Publication series

Name	Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering
ISSN (Electronic)	1867-8211

Conference

Conference	International Conference on Cognitive Radio Oriented Wireless Networks
Period	1/01/00 → …

Keywords

black-space cognitive radio, underlay cr, interference rejection combining, irc, receiver diversity, ofdm, dvb-t

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Publication forum level 1

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10.1007/978-3-030-05490-8_19

Interference Rejection Combining for Black-space 2018
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http://urn.fi/URN:NBN:fi:tuni-202002262354

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Srinivasan, S., & Renfors, M. (2018). Interference Rejection Combining for Black-space Cognitive Radio Communications. In Cognitive Radio Oriented Wireless Networks: Proceedings of 13th EAI International Conference, CROWNCOM 2018, Ghent, Belgium, September 18–20, 2018 (Vol. 261). (Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering). Springer. https://doi.org/10.1007/978-3-030-05490-8_19

Srinivasan, Sudharsan ; Renfors, Markku. / Interference Rejection Combining for Black-space Cognitive Radio Communications. Cognitive Radio Oriented Wireless Networks: Proceedings of 13th EAI International Conference, CROWNCOM 2018, Ghent, Belgium, September 18–20, 2018. Vol. 261 Springer, 2018. (Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering).

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title = "Interference Rejection Combining for Black-space Cognitive Radio Communications",

abstract = "This paper focuses on multi-antenna interference rejection combing (IRC) based black-space cognitive radio (BS-CR) operation. The idea of BS-CR is to transmit secondary user (SU) signal in the same frequency band with the primary user (PU) such that SU{\textquoteright}s power spectral density is clearly below that of the PU, and no significant interference is inflicted on the PU receivers. We develop a novel blind IRC technique which allows such operation mode for effective reuse of the PU spectrum for relatively short-distance CR communication. We assume that both the PU system and the BS-CR use orthogonal frequency division multiplexing (OFDM) waveforms with common frame structure. In this case the PU interference on the BS-CR signal is strictly flat-fading at subcarrier level. Sample covariance matrix based IRC adaptation is applied during silent gaps in CR operation. During CR transmission, the target signal detection and channel estimation utilize multiple outputs from the IRC process obtained with linearly independent steering vectors. The performance of the proposed IRC scheme is tested considering terrestrial digital TV broadcasting (DVB-T) as the primary service. The resulting interference suppression capability is evaluated with different PU interference power levels, silent gap durations, and CR device mobilities.",

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Srinivasan, S & Renfors, M 2018, Interference Rejection Combining for Black-space Cognitive Radio Communications. in Cognitive Radio Oriented Wireless Networks: Proceedings of 13th EAI International Conference, CROWNCOM 2018, Ghent, Belgium, September 18–20, 2018. vol. 261, Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, Springer, International Conference on Cognitive Radio Oriented Wireless Networks, 1/01/00. https://doi.org/10.1007/978-3-030-05490-8_19

Interference Rejection Combining for Black-space Cognitive Radio Communications. / Srinivasan, Sudharsan ; Renfors, Markku.
Cognitive Radio Oriented Wireless Networks: Proceedings of 13th EAI International Conference, CROWNCOM 2018, Ghent, Belgium, September 18–20, 2018. Vol. 261 Springer, 2018. (Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Scientific › peer-review

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AB - This paper focuses on multi-antenna interference rejection combing (IRC) based black-space cognitive radio (BS-CR) operation. The idea of BS-CR is to transmit secondary user (SU) signal in the same frequency band with the primary user (PU) such that SU’s power spectral density is clearly below that of the PU, and no significant interference is inflicted on the PU receivers. We develop a novel blind IRC technique which allows such operation mode for effective reuse of the PU spectrum for relatively short-distance CR communication. We assume that both the PU system and the BS-CR use orthogonal frequency division multiplexing (OFDM) waveforms with common frame structure. In this case the PU interference on the BS-CR signal is strictly flat-fading at subcarrier level. Sample covariance matrix based IRC adaptation is applied during silent gaps in CR operation. During CR transmission, the target signal detection and channel estimation utilize multiple outputs from the IRC process obtained with linearly independent steering vectors. The performance of the proposed IRC scheme is tested considering terrestrial digital TV broadcasting (DVB-T) as the primary service. The resulting interference suppression capability is evaluated with different PU interference power levels, silent gap durations, and CR device mobilities.

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Srinivasan S , Renfors M. Interference Rejection Combining for Black-space Cognitive Radio Communications. In Cognitive Radio Oriented Wireless Networks: Proceedings of 13th EAI International Conference, CROWNCOM 2018, Ghent, Belgium, September 18–20, 2018. Vol. 261. Springer. 2018. (Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering). Epub 2018. doi: 10.1007/978-3-030-05490-8_19

Interference Rejection Combining for Black-space Cognitive Radio Communications

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