Protection ratios and overload thresholds between 700 MHz FDD-LTE and analog/digital terrestrial television

Pupo, Ernesto Fontes; Cabrera, Rufino; García, Alejandro González; Hernández, Reinier Díaz

doi:10.1109/bmsb49480.2020.9379925

Cited by 5 publications

(3 citation statements)

References 9 publications

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“…La norma NTSC-M utiliza un método de barrido de cuadro, que muestra un fotograma con una inyección horizontal escalonada de líneas impares (campo primario) y una inyección horizontal par de líneas pares (campo secundario). El número de fotogramas por segundo en NTSC-M es 30 y el número de líneas es 525 [13]. La frecuencia máxima de la señal de vídeo puede calcularse como fotogramas por segundo × líneas por fotograma × (número de píxeles por línea horizontal) /2, lo que da como resultado 5.512 Mhz Sin embargo, dado que la señal de vídeo pura no aparece en el período de sincronización horizontal ni en el período de sincronización vertical, este período debe excluirse.…”

Section: A Estándar Ntscunclassified

Implementación de transmisor de televisión basados en SDR para el estándar NTSC

Sánchez-Mojica,

Contreras-Gómez,

Niño-Rondón

et al. 2024

AiBi Revista de Investigación, Administración e Ingeniería

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La plataforma SDR (radio definida por software) permite implementar diversos sistemas de comunicación flexibles en función de los objetivos y requisitos del usuario, más allá del límite de flexibilidad de la plataforma de hardware existente. Por ello, ha aumentado el interés y la investigación sobre la implementación de sistemas de comunicación basados en software. Sin embargo, hay muy pocos ejemplos que muestran la compatibilidad y las mediciones de rendimiento entre la implementación mediante SDR y los sistemas comerciales reales. Por lo tanto, en este artículo, mostramos la compatibilidad y el rendimiento del sistema de comunicación que son el receptor y el transmisor de TV NTSC utilizando GNU Radio y USRP en un entorno de comunicación inalámbrica.

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Section: A Estándar Ntscunclassified

Implementación de transmisor de televisión basados en SDR para el estándar NTSC

Sánchez-Mojica,

Contreras-Gómez,

Niño-Rondón

et al. 2024

AiBi Revista de Investigación, Administración e Ingeniería

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“…Laboratory emulation and field measurements demonstrated the feasibility of this spectrum sharing, considering scenarios from adjacent frequencies to full co-channel overlap. The study in [31] tested eight interference scenarios in a controlled laboratory environment to investigate the protection ratios and overload thresholds between analog/digital terrestrial TV and LTE systems in the 700 MHz band. The conclusions highlighted the superiority of digital TV over analog TV in handling LTE interference.…”

Section: Introductionmentioning

confidence: 99%

Adjacent-Channel Compatibility Analysis of International Mobile Telecommunications Downlink and Digital Terrestrial Television Broadcasting Reception in the 470–694 MHz Frequency Band Using Monte Carlo Simulation

Taha,

Vári,

Nagy

2024

Electronics

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This paper delves into the imperative need for coexistence and compatibility in the 470–694 MHz frequency band, as mandated by the World Radiocommunication Conference 2015 (WRC-15) and the WRC-23. It focuses on challenges in the coexistence of Digital Terrestrial Television Broadcasting (DTTB) and International Mobile Telecommunications-2020 (IMT-2020) services in downlink-only mode, particularly in adjacent-channel scenarios. Using Monte Carlo simulations, the study evaluates the probability of interference from IMT base stations with DTTB reception. The analysis thoroughly investigates the impact of the IMT transmitter’s Adjacent Channel Leakage Ratio (ACLR) and the DTTB receiver’s Adjacent-Channel Selectivity (ACS) on the probability of interference. The results demonstrate a significant degradation in the DTTB reception probability at the edge of coverage based on standard assumptions. To address these challenges, this paper provides recommendations for mitigating interference. These include defining enhanced ACLR regulations for IMT base stations, implementing antenna discriminations, providing specialized filters, and establishing national coordination procedures. The research provides valuable insights for informed decision making in spectrum management within the 470–694 MHz band, aiming to facilitate the coexistence of DTTB and IMT-2020 services, in line with international regulations and best practices.

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“…Ref. [37] used laboratory experiments to determine protection ratios and overload thresholds between analog and digital terrestrial TV systems and LTE in the 700 MHz band.…”

Section: Introductionmentioning

confidence: 99%

Co-Channel Compatibility Analysis of IMT Networks and Digital Terrestrial Television Broadcasting in the Frequency Range 470–694 MHz Based on Monte Carlo Simulation

Taha,

Vári,

Nagy

2023

Sensors

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According to Resolution 235 adopted during the World Radiocommunication Conference 2015 (WRC-15) and the preliminary agenda item 1.5 of WRC-2023, the International Telecommunication Union Radiocommunication Sector (ITU-R) has been entrusted to carry out sharing and compatibility studies between broadcasting and mobile services in the frequency range 470–694 MHz in Region 1. This study specifically focuses on evaluating electromagnetic compatibility in potential co-channel sharing scenarios between Digital Terrestrial Television Broadcasting (DTTB) and International Mobile Telecommunications (IMT) systems within the 470–694 MHz frequency band that may arise in the foreseeable future. To assess the conditions for coexistence, a Monte Carlo simulation method implemented through the SEAMCAT software version 5.4.2 is employed, examining six potential interference scenarios. The simulation results yield the minimum coordination distance required between IMT and DTTB services in the 470–694 MHz band based on the protection criteria to ensure harmonious coexistence while maintaining satisfactory performance. Furthermore, the study investigates the impact of various factors such as transmitter power, antenna heights, coverage radius, antenna discrimination, and antenna tilt angle on the separation distances. The focus lies primarily on critical interference scenarios across neighboring countries’ borders. The simulation outcomes confirm that sharing the same frequency band between IMT and DTTB networks would result in significant mutual interference. Nevertheless, carefully analyzing diverse parameters and assumptions helped provide recommendations to reduce the required separation distances. These findings are valuable for broadcasters, mobile operators, and regulators in establishing the technical coexistence conditions for DTTB and IMT in the new band.

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Protection ratios and overload thresholds between 700 MHz FDD-LTE and analog/digital terrestrial television

Cited by 5 publications

References 9 publications

Implementación de transmisor de televisión basados en SDR para el estándar NTSC

Implementación de transmisor de televisión basados en SDR para el estándar NTSC

Adjacent-Channel Compatibility Analysis of International Mobile Telecommunications Downlink and Digital Terrestrial Television Broadcasting Reception in the 470–694 MHz Frequency Band Using Monte Carlo Simulation

Co-Channel Compatibility Analysis of IMT Networks and Digital Terrestrial Television Broadcasting in the Frequency Range 470–694 MHz Based on Monte Carlo Simulation

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