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CRLB analysis for cognitive IR-UWB with imperfect sensing

Cognitive ultra wideband (UWB) technology has ability to sense the environment, and offers an adaptive system with low transmission power and high throughput for wireless communications. Impulse radio UWB (IR-UWB) supports flexible modulations, with short mono-pulses, in which channel estimation has...

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Main Authors: Hosseini, Haleh, Fisal, Norsheila, Syed Yusof, Sharifah Kamilah
Format: Article
Language:English
Published: Penerbit UTM 2013
Subjects:
TK Electrical engineering. Electronics Nuclear engineering
Online Access:http://eprints.utm.my/id/eprint/50080/1/NorsheilaFisal2013_CRLBanalysisforcognitive.pdf
http://eprints.utm.my/id/eprint/50080/
https://dx.doi.org/10.11113/jt.v60.1438
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spelling my.utm.500802018-09-27T04:12:07Z http://eprints.utm.my/id/eprint/50080/ CRLB analysis for cognitive IR-UWB with imperfect sensing Hosseini, Haleh Fisal, Norsheila Syed Yusof, Sharifah Kamilah TK Electrical engineering. Electronics Nuclear engineering Cognitive ultra wideband (UWB) technology has ability to sense the environment, and offers an adaptive system with low transmission power and high throughput for wireless communications. Impulse radio UWB (IR-UWB) supports flexible modulations, with short mono-pulses, in which channel estimation has a critical role. However, imperfect sensing in cognitive IR-UWB introduces the channel estimation errors associated to the interfering primary users. Two main schemes of channel parameters identification are known as pilot-aided and blind methods. In this paper, the effect of primary user interference is considered for channel estimation based on maximum-likelihood (ML) criterion. Cramer-Rao lower band (CRLB) analysis is derived, and performance analysis is simulated to compare both pilot-aided and blind methods in cognitive IR-UWB system. The results verify the better performance of the pilot-aided estimation, and also show the negative effect of increasing the number of primary users and paths on the performance. At SNR=10 dB, for pilot-aided method with 10 users and 3 paths, the CRLB square root of gain is and that of delay is less than blind method. Besides, when the number of primary users is 20, and the paths are 7, this gap is for gain, and for delay Penerbit UTM 2013 Article PeerReviewed application/pdf en http://eprints.utm.my/id/eprint/50080/1/NorsheilaFisal2013_CRLBanalysisforcognitive.pdf Hosseini, Haleh and Fisal, Norsheila and Syed Yusof, Sharifah Kamilah (2013) CRLB analysis for cognitive IR-UWB with imperfect sensing. Jurnal Teknologi (Sciences and Engineering), 60 . pp. 35-40. ISSN 0127-9696 https://dx.doi.org/10.11113/jt.v60.1438 DOI : 10.11113/jt.v60.1438
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
language English
topic TK Electrical engineering. Electronics Nuclear engineering
spellingShingle TK Electrical engineering. Electronics Nuclear engineering
Hosseini, Haleh
Fisal, Norsheila
Syed Yusof, Sharifah Kamilah
CRLB analysis for cognitive IR-UWB with imperfect sensing
description Cognitive ultra wideband (UWB) technology has ability to sense the environment, and offers an adaptive system with low transmission power and high throughput for wireless communications. Impulse radio UWB (IR-UWB) supports flexible modulations, with short mono-pulses, in which channel estimation has a critical role. However, imperfect sensing in cognitive IR-UWB introduces the channel estimation errors associated to the interfering primary users. Two main schemes of channel parameters identification are known as pilot-aided and blind methods. In this paper, the effect of primary user interference is considered for channel estimation based on maximum-likelihood (ML) criterion. Cramer-Rao lower band (CRLB) analysis is derived, and performance analysis is simulated to compare both pilot-aided and blind methods in cognitive IR-UWB system. The results verify the better performance of the pilot-aided estimation, and also show the negative effect of increasing the number of primary users and paths on the performance. At SNR=10 dB, for pilot-aided method with 10 users and 3 paths, the CRLB square root of gain is and that of delay is less than blind method. Besides, when the number of primary users is 20, and the paths are 7, this gap is for gain, and for delay
format Article
author Hosseini, Haleh
Fisal, Norsheila
Syed Yusof, Sharifah Kamilah
author_facet Hosseini, Haleh
Fisal, Norsheila
Syed Yusof, Sharifah Kamilah
author_sort Hosseini, Haleh
title CRLB analysis for cognitive IR-UWB with imperfect sensing
title_short CRLB analysis for cognitive IR-UWB with imperfect sensing
title_full CRLB analysis for cognitive IR-UWB with imperfect sensing
title_fullStr CRLB analysis for cognitive IR-UWB with imperfect sensing
title_full_unstemmed CRLB analysis for cognitive IR-UWB with imperfect sensing
title_sort crlb analysis for cognitive ir-uwb with imperfect sensing
publisher Penerbit UTM
publishDate 2013
url http://eprints.utm.my/id/eprint/50080/1/NorsheilaFisal2013_CRLBanalysisforcognitive.pdf
http://eprints.utm.my/id/eprint/50080/
https://dx.doi.org/10.11113/jt.v60.1438
_version_ 1643652773227528192
score 13.211869

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