On the acceptable perturbation level of CATV distribution amplifiers for mobile DVB-T reception (original) (raw)

Terrestrial DVB (DVB-T): A Broadcast Technology for Stationary Portable and Mobile Use

Proceedings of The IEEE, 2006

Project. DVB-T is in operation in many countries around the world. This paper analyzes the features of the system. It describes its capabilities with a special emphasis on mobile reception and looks at the introduction of DVB-T in Germany using the launch of DVB-T in this country as a case study. In order to analyze how an MPEG transport stream at the input of a DVB-T modulator is turned into a DVB-T signal, we consider the channel coding and modulation used. Then we look at various aspects of the system performance. The next section deals with mobile reception. Network planning issues, antenna diversity concepts for mobile receivers, and handover procedures will be considered. Finally, the introduction of DVB-T in Germany is presented as a case study. In contrast to various other countries Germany decided to offer DVB-T as a means of providing the "anywhere TV" experience. This implies that DVB-T signals can be received with mobile and portable receivers. In regions with DVB-T coverage analogue terrestrial TV services were discontinued just a few months after the launch of DVB-T.

Review: Digital Video Broadcasting Terrestrial (DVB-T) and DVB-T2

Digital video broadcasting Terrestrial (DVB-T) is a leading international standard established for the move from Analog to digital broadcasting basically via terrestrial networks. Within DVB-T it is possible to carry defined data containers in addition to the audio and video in the MPEG 2 transport stream.Digital broadcast systems have increasingly been deployed for various services such as Digital Video Broadcasting (i.e. DVB-S, DVB-T, etc.) and Digital Audio Broadcasting (DAB). Classical digital broadcast systems were designed with fixed modulation techniques, which had to guarantee reliable communication even with very hostile channel environment. Video Broadcasting is playing a key role in communication areas. In this paper DVB-T (terrestrial based digital video broadcasting) and DVB-T2 is analyzed in terms of various parameters.

DVB-T2: The Second Generation of Terrestrial Digital Video Broadcasting System

IEEE Transactions on Broadcasting, 2000

This paper provides a review of the second generation of Terrestrial Digital Video Broadcasting standard DVB-T2. DVB-T2 is the evolution of DVB-T and, together with DVB-S2 and DVB-C2, inaugurated a new transition from the first generation digital broadcasting systems, similar to the transition from analog to digital systems. In the paper the most relevant features of DVB-T2 are explained in detail, along with their benefits and trade-offs.

HDTV field trials using DVB-T and DVB-T2 broadcasting systems

2010

This paper presents the first field trials carried out in Spain to test HDTV reception using DVB-T and DVB-T2 systems. High definition and standard definition digital television contents and services were multiplexed and broadcasted from a terrestrial transmitter. The aim of these trials was to analyze DVB-T2 technology when this system is configured according to the needs of terrestrial HDTV broadcasting and to compare the results with DVB-T technology in terms of CNR requirements and achieved data rate. Field measurements were carried out in different scenarios and reception conditions. The study presented in this paper is focused on fixed reception, Gaussian channel, because it is the expected reception condition for HDTV.

Assessment of DVB-T Compatibility with LTE

World Radiocommunication Conference allocated the 694 MHz-790 MHz (700 MHz) band to the International Telecommunication Union Region 1, which includes also Europe, for the mobile service on a co-primary basis with other services to which this band is allocated on a primary basis, and was identified to the International Mobile Telecommunications. However, countries of Region 1 will also be able to continue the use of these frequencies for their digital terrestrial television services, if necessary. This allocation will be effective immediately after the 2015 World Radiocommunication Conference. The objective of this paper is to assess the electromagnetic compatibility of Digital Video Broadcasting-Terrestrial operating below 694 MHz and mobile broadband (LTE) operating in 700 MHz band. The Minimum Coupling Loss method and Monte Carlo simulation within SEAMCAT software was used for interference analysis. An adjacent channel scenario between Digital Video Broadcasting-Terrestrial and LTE was performed to evaluate the impact of Digital Video Broadcasting-Terrestrial on LTE systems. The results obtained provide the minimum coupling distance required between Digital Video Broadcasting-Terrestrial and LTE in the 700 MHz band to maintain the necessary performance level of the LTE system.

Diseño Digital De Una Repetidora De Emisión DVB-T

Revista de Investigaciones Universidad del Quindío, 2012

In this paper, an optimal signal processing design scheme is proposed for a digital broadcast DVB-T in Digital Terrestrial Television Broadcasting (DTTB) networks. The proposed scheme consists of two stages. In the first stage (input stage), a mixer performs a Frequency Down Conversion to translate the radio signal to IF band, then, an interpolator and decimator perform the processing to change the sample rate for the AFC block. The second stage (output stage) comprises one interpolator to change the sample rate at desired rate, and one mixer to return the signal frequency to RF band. Simulations show that the proposed scheme decreases the operations compared to the conventional design schemes. Additionally, implementation constraints are identified for each stage according to design requirements. Finally, some comments are presented in order to identify limitations and practical design issues in the proposed system.

Design and Simulation of DVB-T2 Transmitter

International Conference on Aerospace Sciences and Aviation Technology

Digital video broadcasting, DVB has become the synonym of digital television as well as data broadcasting. The DVB Project was launched on the 10 th of September, 1993. DVB systems distribute data using a variety of approaches. These approaches include: satellite, cable and terrestrial television. These three sub-standards are basically differ in the specifications of the physical representation, modulation, transmission as well as reception of the signal. DVB-T is the consortium standard for broadcast transmission of digital terrestrial television. The key motivation behind this standard was the desire in several European countries to offer high definition television (HDTV) services as efficiently and effectively as possible.DVB-T2 is considered to be the modified version of DVB-T.DVB-T2 leads to performance improvement by introducing state-of-the art communication techniques where it achieves 30% better capacity compared with DVB-T. In some cases, the data rate will be up to 50% higher under comparable conditions. In this paper we demonstrate the architecture of the DVB-T2 system, as well as a MATLAB design and simulation of the DVB-T2 transmitter. The transmitter model is then tested for different data rates. The model provides an overall evaluation of the DVB-T2 transmitter parameters and can be used for educational and testing purposes.

Comparative Performance Evaluation of DVB-T using Advance Design System (ADS

Wireless technologies have brought a rapid growth to digital video broadcasting and as such, has played (and still playing) a vital role in communication systems. Orthogonal frequency division multiplexing (OFDM) has also become so popular in wireless communication systems reason been that it has high spectral efficiency, high throughput, high data capacity and resilience to multipath fading. In addition to these, it is very robust to channel impairment; a quality which has made it preferable and ideal in wireless communication systems. This paper evaluates DVB and compares its performance across three different channels (AWGN, Rayleigh and Ricean) and three different modulation techniques (QPSK, 16 QAM and 64 QAM) is employed. DTV_DVB in 2K Mode carriers is transmitted across AWGN, Rayleigh and Ricean and a comparison of BER performance of the different modulation schemes was considered. At the end of the simulation results and analysis, it was found that AWGN in 16QAM carrier modulation is considered the best modulation technique for DVB_T.

Mobility issues in a DVB-T environment

Digital Video Broadcasting (DVB) is the leading technology for permitting digital television access to a wide repartition of users. There exist many different types of DVB technologies: DVB-T for Terrestrial, DVB-S for Satellite, DVB-C for Cable, each one with its own specifications. This paper focuses on the DVB-T mechanism and the way it handles mobility; it describes all the mobility issues and challenges arising from this technology. Investigations on the integration of the Internet Protocol, IP, over the coming terrestrial digital television standard, DVB-T, are also included. It presents mobility scenarios in a special DVB-T environment, along with a complete broadcasting architecture, in which all leading mobile technologies coexist, and provides solutions and enhancements for a better technology deployment.