Adaptive gap filler for digital terrestrial television

Rocha, Chrystianne; Akamine, Cristiano; Bedicks, Gunnar; Horta, Edson Lemos; Stolfi, Guido

doi:10.1109/bmsb.2014.6873535

Cited by 3 publications

(2 citation statements)

References 12 publications

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“…The Cloud Txn system presented was implemented with a bandwidth of 6 MHz in a SDR platform and was based on [8], [9], because it allows a more flexible and agile development, along with the possibility of future changes in the radio [10], [11]. It was chosen the software Gnu Radio to implement the system in the hardware (SDR NI USRP-B210), due to its practicality and the wide range of libraries for communication systems [12].…”

Section: Tests and Resultsmentioning

confidence: 99%

A proposal to use cloud transmission technique into the ISDB-T system

Silva

Akamine

Maciel³

et al. 2015

2015 IEEE International Symposium on Broadband Multimedia Systems and Broadcasting

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Cloud Transmission is a new broadcasting system, proposed to be used as the physical layer in the next-generation digital television, especially for the Advanced Television Systems Committee (ATSC) 3.0 system. Its principal benefits are spectral efficiency, robustness against noise, multipath and co-channel interference, besides maintaining compatibility with actual and future systems. Cloud Transmission is based on Layer-Division-Multiplexing (LDM), which provides to the system an increase of its robustness keeping the same data rates. This paper presents a performance analysis of an LDM transmitter/receiver, implemented in Software Defined Radio (SDR), using the same channel coder, interleavers, modulation and OFDM frame structure of Integrated Digital Services Broadcasting-Terrestrial (ISDB-T). Index Terms-Cloud Transmission (Cloud Txn), Layer-Division-Multiplexing (LDM), Integrated Digital Services Broadcasting-Terrestrial (ISDB-T), Software Defined Radio (SDR).I.

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Section: Tests and Resultsmentioning

confidence: 99%

A proposal to use cloud transmission technique into the ISDB-T system

Silva

Akamine

Maciel³

et al. 2015

2015 IEEE International Symposium on Broadband Multimedia Systems and Broadcasting

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“…In this work, broadcast technology is adopted (one point to all other points, the authors present two echo cancellation methods as a critical technique to solve the echo and interference problem in the SFN environment using DAE and DEEC like an echo cancellation method. Furthermore, the ideal proposed technique should be compared with other research rewww.ijacsa.thesai.org sults, such as [22]. This paper does not only ensure the safe and robust operation of the repeater against the dynamics of the environment [23] but also can suppress Doppler Effect and avoid the interferences and echoes to the received signal from the transmitter in its overall coverage area.…”

Section: Introductionmentioning

confidence: 99%

Very High-Performance Echo Canceller for Digital Terrestrial Television in Single Frequency Network

Ar-Reyouchi¹,

Lamrani²,

Ghoumid³

et al. 2020

IJACSA

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The principal aim of this paper is to cancel out the natural and man-made echoes in single-frequency networks (SFN). The challenge is to detect and remove feedback echoes and enhance the intelligibility of the essential parameters in SFN of digital terrestrial television broadcasting (DTTB) transmitter systems, especially the Modulation Error Ratio (MER), with optimizing coverage areas. We suggest a Digital Video Broadcasting (DVB) gap filler (GF) with two types of echo cancelling: Digital Adaptive Equalizer (DAE) and Doppler Enhanced Echo Canceller (DEEC). The proposed GF outperforms standard GF (SGF), finite impulse response filter (FIR GF), and adaptive GF (AGF) techniques by 33%, 17%, and 13%, respectively. Furthermore, the obtained MER makes the proposed GF (PGF) ideal for operating in SFN using Coded Orthogonal Frequency Division Multiplex (COFDM) technique.

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