scholarly journals Systematic lossy forward error protection for error-resilient digital video broadcasting

2004 ◽  
Author(s):  
Shantanu D. Rane ◽  
Anne Aaron ◽  
Bernd Girod
Keyword(s):  
Digital Video ◽  
Error Protection ◽  
Error Resilient ◽  
Digital Video Broadcasting ◽  
Video Broadcasting ◽  
Forward Error

scholarly journals Optimized Polar Codes as Forward Error Correction Coding for Digital Video Broadcasting Systems

Electronics ◽  
2021 ◽  
Vol 10 (17) ◽  
pp. 2152
Author(s):  
Karim El-Abbasy ◽  
Ramy Taki Eldin ◽  
Salwa El Ramly ◽  
Bassant Abdelhamid
Keyword(s):  
Error Correction ◽  
Forward Error Correction ◽  
Digital Video ◽  
Ldpc Codes ◽  
Polar Codes ◽  
Optimized Design ◽  
Digital Video Broadcasting ◽  
Design Point ◽  
Video Broadcasting ◽  
Forward Error

Polar codes are featured by their low encoding/decoding complexity for symmetric binary input-discrete memoryless channels. Recently, flexible generic Successive Cancellation List (SCL) decoders for polar codes were proposed to provide different throughput, latency, and decoding performances. In this paper, we propose to use polar codes with flexible fast-adaptive SCL decoders in Digital Video Broadcasting (DVB) systems to meet the growing demand for more bitrates. In addition, they can provide more interactive services with less latency and more throughput. First, we start with the construction of polar codes and propose a new mathematical relation to get the optimized design point for the polar code. We prove that our optimized design point is too close to the one that achieves minimum Bit Error Rate (BER). Then, we compare the performance of polar and Low-Density Parity Check (LDPC) codes in terms of BER, encoder/decoder latencies, and throughput. The results show that both channel coding techniques have comparable BER. However, polar codes are superior to LDPC in terms of decoding latency, and system throughput. Finally, we present the possible performance enhancement of DVB systems in terms of decoding latency and complexity when using optimized polar codes as a Forward Error Correction (FEC) technique instead of Bose Chaudhuri Hocquenghem (BCH) and LDPC codes that are currently adopted in DVB standards.

scholarly journals AL-FEC for Improved Mobile Reception of MPEG-2 DVB-T Transport Streams

2009 ◽  
Vol 2009 ◽  
pp. 1-10 ◽  
Author(s):  
David Gozálvez ◽  
David Gómez-Barquero ◽  
Thomas Stockhammer ◽  
Michael Luby
Keyword(s):  
Error Correction ◽  
Forward Error Correction ◽  
Digital Video ◽  
Application Layer ◽  
Mobile Tv ◽  
Dynamic Simulations ◽  
Digital Video Broadcasting ◽  
Protection Mechanism ◽  
Video Broadcasting ◽  
Forward Error

We investigate the use of application layer FEC protection in DVB-T (Digital Video Broadcasting-Terrestrial) networks for the provision of mobile services. Mobile reception is characterized by variations of the received signal caused by fast fading and shadowing. DVB-T was originally designed for fixed and portable reception, and generally does not provide enough quality in mobile environments. The link layer protection mechanism MPE-FEC (Multi Protocol Encapsulation-Forward Error Correction) was standardized in DVB-H (Digital Video Broadcasting-Handheld) for the protection of mobile TV services. Although DVB-T itself does not incorporate any link or application layer protection mechanism, AL-FEC (Application layer Forward Error Correction) protection can be introduced in DVB-T in a backwards compatible way. By means of AL-FEC, it is possible to improve the robustness of DVB-T services for the provision of mobile TV. In this paper, we explain the concept of AL-FEC protection in DVB-T and evaluate its performance by means of laboratory measurements and dynamic simulations with shadowing. We study different configurations of AL-FEC and compare its performance with MPE-FEC. In this paper, we discuss some implementation aspects of AL-FEC in real scenarios and propose an implementation based on Raptor codes and hash sequences. We also present results obtained by a first AL-FEC prototype for DVB-T that demonstrates the feasibility of the approach.

scholarly journals A MULTIBANK MEMORY-BASED VLSI ARCHITECTURE OF DIGITAL VIDEO BROADCASTING SYMBOL DEINTERLEAVER

2017 ◽  
pp. 111-115
Author(s):  
D.HARI BABU ◽  
B.NEELIMA DEVI
Keyword(s):  
Forward Error Correction ◽  
Digital Video ◽  
Vlsi Architecture ◽  
Lookup Table ◽  
Experimental Result ◽  
Digital Video Broadcasting ◽  
Video Broadcasting ◽  
Great Saving ◽  
On Chip ◽  
Forward Error

In this paper, an efficient symbol-deinterleaver architecture compliant with the digital-video-broadcasting (DVB) standard is proposed. By partitioning the entire symbol buffer into four separate parts with a special low-conflict access control strategy, the symbol deinterleaver can be implemented with four-bank single-port on-chip memory blocks with slight overhead. The experimental result shows that 30% savings of hard-ware cost can be achieved compared with the conventional double-buffer approach. In addition, a lookahead online circuit of a symbol permuta-tion-address generator is also proposed, which can provide the required permutation addresses every cycle to avoid either the use of a lookup table or an extra temporary buffer. Being the major part of the entire DVB forward-error-correction decoder, the proposed symbol deinterleaver can contribute a great saving of the overall decoder cost.

Quantization Algorithms in Healthcare Information Telematics Using Wireless Interactive Services of Digital Video Broadcasting.

2020 ◽  
Vol 13 ◽  
Author(s):  
Konstantinos Kardaras ◽  
George I. Lambrou ◽  
Dimitrios Koutsouris
Keyword(s):  
Data Compression ◽  
Data Transmission ◽  
Digital Video ◽  
Digital Television ◽  
End User ◽  
Digital Video Broadcasting ◽  
New Era ◽  
Video Broadcasting ◽  
Television Network ◽  
Interactive Services

Background: In the new era of wireless communications new challenges emerge including the provision of various services over the digital television network. In particular, such services become more important when referring to the tele-medical applications through terrestrial Digital Video Broadcasting (DVB). Objective: One of the most significant aspects of video broadcasting is the quality and information content of data. Towards that end several algorithms have been proposed for image processing in order to achieve the most convenient data compression. Methods: Given that medical video and data are highly demanding in terms of resources it is imperative to find methods and algorithms that will facilitate medical data transmission with ordinary infrastructure such as DVB. Results: In the present work we have utilized a quantization algorithm for data compression and we have attempted to transform video signal in such a way that would transmit information and data with a minimum loss in quality and succeed a near maximum End-user approval. Conclusions: Such approaches are proven to be of great significance in emergency handling situations, which also include health care and emergency care applications.

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