Video over TETRA

Thornton, L.; Chakraborty, Mohuya; Soraghan, John

doi:10.1049/ic:20000030

Cited by 2 publications

(1 citation statement)

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“…In [25], the authors discuss several error-resilient tools and protection codes for TETRA network. In TETRA, Rate Compatible Punctured Convolution (RCPC) is advised for protection from errors at the cost of reduction in net data rate from 7.2 Kbps to 2.4 Kbps and 4.8 Kbps for high and low data protection schemes, respectively.…”

Section: Related Workmentioning

confidence: 99%

An Investigation of Video Communication Over Bandwidth Limited Public Safety Network

Ahmad¹,

Shan²,

Khan

et al. 2018

MJCS

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Application performance of video-based services for public safety and security (PSS) systems is of high importance in order to protect citizens, organizations, and institutions against threats to their well-being. Video based services help PSS personnel to efficiently perform their rescue operations. Real-time video streaming of incident-based services over the PSS communication networks facilitates in realistic assessment of the situations and saves many precious lives. However, video communication over PSS networks, such as Terrestrial Trunked Radio (TETRA), is a big challenge due to the narrowband and the hostile environment. Thus, specialized codecs have been developed considering the constraints of the PSS networks. This paper presents performance comparisons of two video codecs, namely H.264/AVC and MPEG-4, over TEDS links. The significance of the results is evaluated using SPSS (t-test) to critically analyse the data. It is observed that video quality offered by H.264/AVC over TEDS links is better than the one offered by MPEG-4. Moreover, it is also noticed that TEDS bandwidth limitations substantially affect the quality of reconstructed video containing frequent changes of scenes. Based on the findings of our analyses, we propose a set of applications which are suitable for TEDS networks. The findings of this study would help the researchers to further explore the possibilities of video communication over TEDS links by optimizing the lower level network technologies.

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Section: Related Workmentioning

confidence: 99%

An Investigation of Video Communication Over Bandwidth Limited Public Safety Network

Ahmad¹,

Shan²,

Khan

et al. 2018

MJCS

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Risk assessment of sex offenders.

Beech¹,

Fisher

Thornton³

2003

Professional Psychology: Research and Practice

175

101

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What is needed to carry out a thorough risk assessment of an ex-offender? This article describes four major components: (a) a functional analysis of the offense process in order to determine how the offenders' problems contributed to their offending and to identify the modus operandi used in their offense(s); (b) the application of a suitable actuarial risk predictor to assess the offender's global level of risk; (c) identification of stable dynamic risk factors that make potential treatment targets; and (d) monitoring of acute dynamic factors that indicate offending is imminent.

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Video over TETRA

Cited by 2 publications

References 0 publications

An Investigation of Video Communication Over Bandwidth Limited Public Safety Network

An Investigation of Video Communication Over Bandwidth Limited Public Safety Network

Risk assessment of sex offenders.

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