scholarly journals A Study on the Cognitive Differences and Issue Factors of Terrestrial Broadcasters on Transmission System Determinants of Digital Radio Broadcasting

2015 ◽  
Vol 20 (1) ◽  
pp. 122-139
Author(s):  
Su-Hyun Chae ◽  
Yeong-Ju Lee
Keyword(s):  
Transmission System ◽  
Cognitive Differences ◽  
Digital Radio ◽  
Radio Broadcasting

RESULTS OF THE DRM SIMULCAST FIELD TRIALS IN 87.5-108 MHZ BAND

2021 ◽  
Author(s):  
С.А. СОКОЛОВ ◽  
С.В. МЫШЬЯНОВ ◽  
Ю.А. КОВАЛГИН
Keyword(s):  
Russian Federation ◽  
High Power ◽  
Electromagnetic Compatibility ◽  
Field Trials ◽  
High Power Field ◽  
Transmit Power ◽  
Digital Radio ◽  
Current State ◽  
Radio Broadcasting ◽  
The World

Показано современное состояние цифрового радиовещания в России и в мире. Описаны результаты исследований, проведенных в опытной зоне аналого-цифрового DRM/ЧМ-радиовещания в полосе частот 87,5-108 МГц в Санкт-Петербурге в период с 18 июля 2019 г. по 25 декабря 2020 г. при мощностях аналоговой и цифровой частей передатчика, равных 3000 и 800 Вт соответственно. Приведены результаты оценки электромагнитной совместимости обоих форматов радиовещания. Сформулированы требования, предъявляемые отечественными радиовещателями к системе цифрового радиовещания в диапазоне 87,5-108 МГц, и показано, что аналого-цифровой формат DRM Simulcast соответствует им. The current state of digital radio broadcasting both in Russia and in the world is presented. Digiton Systems LLC carried out a high-power field trial of the DRM system in DRM Simulcast mode by order of the Russian Television and Radio Broadcasting Network (RTRN) in the FM band 87.5-108 MHz in St. Petersburg (Russian Federation) from July 2019 to December 2020. The transmitter was set to radiate at 95.9 MHz FM signal with a transmit power of 3 kW and DRM signal with a transmit power of 800 W simultaneously. The article presents the results of these studies. The results of evaluating the electromagnetic compatibility of FM and DRM broadcasting formats are also described.

Automatic novel system for sending emergency alert and alarm for multi events through radio broadcasting transmission system in Perú

2017 ◽  
Author(s):  
Alejandro Jose Llanos Garcia ◽  
Ronald Gilbert Chavez Rojas ◽  
Armando Zaga Ttito ◽  
Zoser Sudith Quenaya Hinojosa ◽  
Marco Aurelio Jara Quispe ◽  
...  
Keyword(s):  
Transmission System ◽  
Radio Broadcasting

scholarly journals Baseband Transceiver Design of a High Definition Radio FM System Using Joint Theoretical Analysis and FPGA Implementation

2014 ◽  
Vol 2014 ◽  
pp. 1-9
Author(s):  
Chien-Sheng Chen ◽  
Chyuan-Der Lu ◽  
Ho-Nien Shou ◽  
Le-Wei Lin
Keyword(s):  
Carrier Frequency ◽  
Orthogonal Frequency Division Multiplexing ◽  
Carrier Frequency Offset ◽  
Timing Synchronization ◽  
High Definition ◽  
Digital Radio ◽  
Radio Broadcasting ◽  
Field Programmable ◽  
Broadcasting System ◽  
Digital Broadcasting

Advances in wireless communications have enabled various technologies for wireless digital communication. In the field of digital radio broadcasting, several specifications have been proposed, such as Eureka-147 and digital radio mondiale (DRM). These systems require a new spectrum assignment, which incurs heavy cost due to the depletion of the available spectrum. Therefore, the in-band on-channel (IBOC) system has been developed to work in the same band with the conventional analog radio and to provide digital broadcasting services. This paper discusses the function and algorithm of the high definition (HD) radio frequency modulation (FM) digital radio broadcasting system. Content includes data format allocation, constellation mapping, orthogonal frequency division multiplexing (OFDM) modulation of the transmitter, timing synchronization, OFDM demodulation, integer and fraction carrier frequency (integer carrier frequency offset (ICFO) and fractional CFO (FCFO)) estimation, and channel estimation of the receiver. When we implement this system to the field programmable gate array (FPGA) based on a hardware platform, both theoretical and practical aspects have been considered to accommodate the available hardware resources.

Digital Radio Broadcasting Frequency Chebyshev CLF and HPF Designs Using ROGER 4003C

2009 ◽  
Vol 1 (2) ◽  
pp. 107-113
Author(s):  
Ayob Johari ◽  
Mohd Helmy Abd Wahab ◽  
M. Erdi Ayob ◽  
M. Izwan Ayob ◽  
Danial Md Nor ◽  
...  
Keyword(s):  
Digital Radio ◽  
Radio Broadcasting

scholarly journals Modeling and Performance prediction of Eureka-147 OFDM based DAB system

2012 ◽  
pp. 83-88
Author(s):  
Arun Agarwal ◽  
Sarat Kumar Patra
Keyword(s):  
High Performance ◽  
Forward Error Correction ◽  
Multipath Fading ◽  
Mobile Environment ◽  
Digital Radio ◽  
Radio System ◽  
Radio Broadcasting ◽  
And Performance ◽  
Forward Error ◽  
Coded Ofdm

The new digital radio system DAB (Digital Audio Broadcasting), developed within the Eureka 147 project is a very innovative and universal multimedia broadcast system that has the potential to replace existing AM and FM audio broadcast services in many parts of the world in the near future. DAB employs coded OFDM technology that enables it for mobile reception and makes receivers highly robust against channel multipath fading effect. In this paper, we have analyzed the bit error rate (BER) performance of DAB system conforming to the parameters established by the ETSI (EN 300 401) using frequency interleaving and Forward Error Correction (FEC) in different transmission channels. The results shows DAB to be suitable radio broadcasting technology for high performance in mobile environment.

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