scholarly journals Digital Transmission Techniques that support Digital Broadcasting. Protection of Digital Terrestrial Television Signals Against Analog Signal Interference.

1999 ◽  
Vol 53 (11) ◽  
pp. 1585-1591
Author(s):  
Syunji Nakahara ◽  
Masahiro Okano ◽  
Toru Kuroda ◽  
Makoto Sasaki ◽  
Youzou Utsumi
Keyword(s):  
Digital Transmission ◽  
Analog Signal ◽  
Signal Interference ◽  
Digital Broadcasting ◽  
Digital Terrestrial Television

A Terrestrial Digital Broadcasting and Positioning System Based on Overlap Communication

2014 ◽  
Vol 568-570 ◽  
pp. 1282-1286
Author(s):  
Guo Cheng Wu ◽  
Zhan Xin Yang ◽  
Wei Zhang Xu
Keyword(s):  
Communication Theory ◽  
Digital Transmission ◽  
Performance Degradation ◽  
Transmission System ◽  
Positioning System ◽  
Navigation Signal ◽  
Performance Deterioration ◽  
Digital Broadcasting ◽  
Simulation Results

Inspired by the overlap communication theory, a new onshore radio positioning system which superimposed on terrestrial digital transmission system is proposed in this paper. This system overlaps but not affects existing terrestrial digital broadcasting.At the receiver, a reconstruction/cancellation algorithm.is implied to capture the navigation signal and positioning measurements precisely.This paper focus on the construction of overlap system,spreading navigation signal and the capture of positioning measurements.We give a method to generate spreading navigation signal and overlap with terrestrial digital transmission system.The method can reduce the performance degradation due to pilot interference. We also proposes a reconstruction/cancellation algorithm which can solution the capture performance deterioration caused by overlapped system . The simulation results show that this system proposed in this paper can be used in terrestrial digital transmission system and provide good positional function.

A Hybrid Transmission-Line/SAW-Resonator Analog Signal-Interference Dual-Band Bandpass Filter

2020 ◽  
Vol 30 (1) ◽  
pp. 27-30 ◽  
Author(s):  
Ting Cai ◽  
Chang Chen ◽  
Xiang Zhang ◽  
Fujiang Lin ◽  
Hualiang Zhang
Keyword(s):  
Transmission Line ◽  
Bandpass Filter ◽  
Analog Signal ◽  
Dual Band ◽  
Signal Interference ◽  
Hybrid Transmission

Rwanda Leapfrogs into Digital Broadcasting Migration

2014 ◽  
pp. 232-252
Author(s):  
Cedric Pierre-Louis
Keyword(s):  
Creative Industries ◽  
East African ◽  
Analog To Digital ◽  
East African Community ◽  
The Public ◽  
Content Development ◽  
African Community ◽  
Digital Broadcasting ◽  
Digital Terrestrial Television ◽  
The Government

This chapter interrogates the migration process from Analog to Digital Terrestrial Television occurring in Rwanda, which has, since May 2013, entered its final stages. Following the commitment of the East African Community (EAC) inspired by the 2006 recommendations of the International Telecommunications Union (ITU), Rwanda switched to digital terrestrial broadcasting in December 2013. In the meantime, the government sought to increase television penetration from 7% in December 2012 to 30% when the switch off process came to its end. This chapter focuses on the challenges and constraints of this transition in a country where 80% of the population belongs to the primary sector, and where only 10.6% of Rwandans have access to electricity as a main source of lighting. Based on the author's experience as the Project Leader and Managing Director of TV10, the first private television channel in Rwanda, this chapter discusses and analyzes salient aspects of this migration, which is part of a very ambitious technological catch-up policy. It also highlights the different initiatives put together by the private and the public sector to develop innovative solutions that could mobilize the population and improve their access to television. These initiatives sometimes seem to focus on technical considerations to the detriment of local content development, an undeniable and crucial source of employment in the creative industries. Finally, this chapter points out the opportunities and significant growth potential that digital broadcasting could bring to all the stakeholders involved.

scholarly journals Selection and Justification of a Digital System Broadcasting for the Republic of Angola

2021 ◽  
Vol 7 (3) ◽  
pp. 55-63
Author(s):  
V.M.J. Santos
Keyword(s):  
Costa Rica ◽  
Sri Lanka ◽  
Digital Transmission ◽  
Experimental Results ◽  
The World ◽  
Broadcasting System ◽  
Digital Transmitter ◽  
Digital Broadcasting ◽  
The Republic ◽  
The City

In this work we seek to approach the choice of the Republic of Angola for the ISDB-T telebroadcasting system. The experimental results of the ISDB-T digital transmission system in the Republic of Angola are Execelente. Currently, the Japanese terrestrial digital broadcasting system (ISDB-T) is used in 14 countries around the world (Argentina, Bolivia, Brazil, Chile, Costa Rica, Japan, Peru, Paraguay, El Salvador, Uruguay, Honduras, Venezuela, Philippines, Botswana) and 6 more countries (Angola, Maldives, Sri Lanka, Guatemala, Ecuador, Nicaragua) have adopted this system. The study shows that ISDB-T is a system applicable in our country, as even with the transmitter operating at 50% of its maximum power, the signal is received in a large part of the city of Luanda, with failures only in regions far from the center urban. The implementation of a fully digital transmitter that is foreseen, the increase of the transmitter's power, among other changes, may provide better advantages in implementing the ISDBT in the Republic of Angola. The commitment comes at a time when Angola plans to cover the entire national territory, starting in 2023.

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