Zobrazeno 1 - 10
of 133
pro vyhledávání: '"R.A. Cryan"'
Publikováno v:
Chem. Sci.. 5:3120-3129
Metallo-β-lactamases (MBLs) are a group of enzymes responsible for a significant proportion of bacterial resistance to β-lactam antibiotics by catalysing the hydrolysis of the β-lactam. The MBL from B. cereus BcII (569/H/9) forms both mono- and bi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::59546393c3c3a2d0cbe1452f3513b149
https://doi.org/10.1039/c4sc00601a
https://doi.org/10.1039/c4sc00601a
Publikováno v:
IEE Proceedings - Optoelectronics. 147:286-294
A pyramidal fly-eye diversity detection configuration is presented for wireless infrared communication in small and middle-sized office rooms. It is demonstrated that the configuration combats the sensitivity degradation imposed by multipath dispersi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9a8c9ea2ee543317ab08d1d219ce49af
https://doi.org/10.1049/ip-opt:20000609
https://doi.org/10.1049/ip-opt:20000609
Autor:
R.A. Cryan, Jaafar M. H. Elmirghani
Publikováno v:
Journal of Lightwave Technology. 13:923-932
The performance of a hybrid erbium-doped fiber amplifier pulse position modulation (EDFA PPM) system is investigated under self-synchronization. Sensitivity results are presented for a system operating at 622 Mb/s and /spl lambda/=1.53 /spl mu/m. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b771c6caff9767b3cf2fcdbf19416b69
https://doi.org/10.1109/50.387810
https://doi.org/10.1109/50.387810
Publikováno v:
IEEE Transactions on Communications. 43:1001-1012
Digital pulse position modulation (PPM) has been shown to be attractive for implementation over the optical fibre channel when the laser transmitters are average power limited and the channel bandwidth is abundant. The synchronization requirements fo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::79bf80a8e9bcc6fa787aee5b63898013
https://doi.org/10.1109/26.380132
https://doi.org/10.1109/26.380132
Autor:
R.A. Cryan
Shortened pulse position modulation (SPPM) is a new modulation format that has recently been proposed for underwater wireless optical communication. A full spectral characterisation of SPPM is considered and original expressions are presented, which
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c26a56011d85e12e36ff41ae20dc7431
https://eprints.hud.ac.uk/id/eprint/7191/2/CryanSpectral_characterisation_of_SPPM.pdf
https://eprints.hud.ac.uk/id/eprint/7191/2/CryanSpectral_characterisation_of_SPPM.pdf
Publikováno v:
High Frequency Postgraduate Student Colloquium, 2005.
The chromatic dispersion (CD) of a single mode fibre (SMF) is an important issue in a long haul optical communication system when the new generation of optical system is introduced operating at the wavelength of 1.55 /spl mu/m with the bit rate of 10
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6229442caf6a9b3716ee555a079c5f2e
https://doi.org/10.1109/hfpsc.2005.1566375
https://doi.org/10.1109/hfpsc.2005.1566375
Autor:
R.T. Unwin, R.A. Cryan
Publikováno v:
[Proceedings] GLOBECOM '90: IEEE Global Telecommunications Conference and Exhibition.
A performance and optimization analysis for a Reed-Solomon-coded n-ary pulse-position-modulation (PPM) scheme operating over a fiber channel employing heterodyne detection and assuming a Gaussian received pulse shape is presented. Calculated results
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e74907ca40dae6fdb2c960a0b9dd47bc
https://doi.org/10.1109/glocom.1990.116615
https://doi.org/10.1109/glocom.1990.116615
Publikováno v:
5th IEE Conference on Telecommunications.
A digital adaptive filter (DAF) configuration is presented that models speech in the short term and allows accurate characterisation of echo paths. With the development of telecommunications networks it is imperative that network operators have the f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e6b389986978a7f6a3f3030478ce5c13
https://doi.org/10.1049/cp:19950146
https://doi.org/10.1049/cp:19950146
Autor:
R.A. Cryan, Rodney T. Unwin
Publikováno v:
Advanced Fiber Communications Technologies.
The n-ary pulse position modulation is a means by which excess optical fiber bandwidth can be exchanged for improved receiver sensitivity. Here, we consider both direct detection (PIN- BJT and PIN-FET) and coherent n-ary PPM over a range of fiber ban
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e03b54f4987cb3c556da404144b9a5ec
https://doi.org/10.1117/12.50146
https://doi.org/10.1117/12.50146
Publikováno v:
Coherent Lightwave Communications: Fifth in a Series.
In this paper we present computer results at 1. 5zm comparing coherent n-ary PPM with coherent PCM. We show that for a given fibre bandwidth there is an optimum word size and this occurs when the equivocations attributed to the error sources in n-ary
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::607f94dfc4270d17ef17eb4a3c755b60
https://doi.org/10.1117/12.24909
https://doi.org/10.1117/12.24909