This paper presents a compatibility study between future digital television (DTV) and Long Term Evolution (LTE) in the UHF band using Nigeria as a case study. This is done by carrying out an adjacent interference analysis to evaluate the impact of LTE base station on DVB-T2 reception using SEAMCAT software. Results obtained from simulations suggest that deploying LTE in an adjacent band would r...

The study and development of systems for higher quality television has seen tremendous growth in recent years. This has been motivated by the fact that existing television systems give inadequate picture quality, especially for viewing on large screen displays. The main impairments which have been identified an~ scanning artifacts (line stucture visibility and flicker), limited resolution, and ...

The influence of the local terrestrial environment on nocturnal atmospheric CO2 measurements at a 329-m television transmitter tower (and a component of a CO2 monitoring network) was estimated with a tracer release experiment and a subsequent simulation of the releases. This was done to characterize the vertical transport of emissions from the surface to the uppermost tower level and how it is ...

This paper describes the turbulent eddy profiler (TEP), a volume-imaging, UHF radar wind profiler designed for clear-air measurements in the atmospheric boundary layer on scales comparable to grid cell sizes of large eddy simulation models. TEP employs a large array of antennas—each feeding an independent receiver—to simultaneously generate multiple beams within a 288 conical volume illuminated...

A 910MHz high efficiency RF transceiver for Wireless Body Area Network in medical application is presented in this paper. High energy efficiency transmitter and receiver architectures are proposed. In wireless body sensor network, the transmitter must have higher efficiency compared with the receiver because a large amount of data is sent from sensor node to receiver of the base station and sma...

A task-independent ller modeling for robust keyphrase detection and veri cation is proposed. Instead of assuming task-speci c lexical knowledge, our model is designed to characterize phrases depending on the speaking-style, thus can be trained with large corpora of di erent but similar tasks. We present two implementations of the portable and general model. The dialogue-style dependent model tr...

The purpose of this study is to characterize the indoor and indoor-outdoor propagation in different scenarios, using monopole antennas working at 410 MHz and 890 MHz. Propagation of narrow band and wide bands have been studied. In scenarios with a continuous variation of the distance between the transmitter and receiver antenna (1 D scenarios), we use a log-distance path loss model to determine...

This paper studies disfluencies in authentic human–human dialogues in Swedish and Tok Pisin. It is found that while there are no major differences as to types or frequencies on a macro level, there are dissimilarities on a micro level, notably in the characteristics of how prolonged segments are realized. The paper also discusses the results in the light of reported disfluencies in English, Ger...

The performance of spoken language systems on utterances from the ATI$ domain is evaluated by comparing systemproduced responses with hand-crafted (and -verified) standard responses to the same utterances. The objective of SRI's annotation project is to provide SLS system developers with the range of correct responses to human utterances produced during experimental sessions with ATIS domain in...