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This paper presents the implementation of a single FPGA intellectual property (IP) core for channel coding and interleaving used in Digital Video Broadcasting, second generation (DVB-T2). DVB-T2 is the extension of the television standard DVB-T, issued by the consortium DVB, and is devised for the broadcast transmission of digital terrestrial television. The higher offered bit rate, with respect to...
In this paper, we evaluate the performances of distributed Tarokh Space Frequency Block Coding (SFBC) compared to classical Single Frequency Network (SFN) and Distributed Alamouti MISO with SFN (MISO-SFN) for the emerging second generation digital TV Broadcasting (DVB-T2). We showed the performance of SFN and Alamouti MISO-SFN for two, three and four transmitters for DVB-T2 chain. We also compared...
The Digital Video Broadcasting second generation Terrestrial (DVB-T2) standard purposes to provide high definition digital video and high rate services for the same spectrum allocation of the current Digital Video Broadcasting Terrestrial (DVB-T) standard. The implementation guideline is provided by the DVB-T2 standardization community, the Digital Video Broadcasting (DVB) Project. The DVB Project...
The second generation terrestrial transmission standard DVB-T2 introduces the application of MIMO techniques based on the well-known Alamouti scheme for improved mobile and portable reception. However, no channel models are currently available to estimate the gain of Alamouti coding in these channels. Therefore, this document presents a new approach that uses existing DVB-T networks as channel sounder...
For terrestrial television two television standards exist: The DVB-T standard is currently widely deployed and used in more than 35 countries worldwide. The second one is the emerging standard DVB-T2. It is a revised standard which offers a higher spectral efficiency and requires multiple transmit antennas. DVB-T2 promises performance gains because of improved coding, modulation and multiple antenna...
The focus of this paper is on the correlative coding used to mitigate frequency offset in orthogonal frequency division multiplexing (OFDM) systems in mobile radio applications, such as 802.11a, 802.16, and digital video broadcasting (DVB) systems, e.g., DVB-CS2. This frequency offset may result due to the time variations of the channel during one OFDM symbol interval, or the transmitter and receiver...
Existing analog video broadcasting transmission systems are very sensitive to interference from other analog video signals and require high co-channel protection ratio. Terrestrial digital video broadcast systems are significantly less sensitive to noise and interference. DVB-T systems with digital COFDM modulation, multicarrier techniques and channel coding system ensure frequency spectrum efficiency...
Multiple Input Multiple Output (MIMO) is a topic of high interest for the next generation of broadcasting systems. However, their deployment in single frequency networks (SFN) becomes more critical when they are used in hybrid satellite-terrestrial transmission due to the different aspects of the respective transmission links. In this paper, we propose to apply a double layer space time block code...
Classical systems using hierarchical modulation (such as DVB-SH) involve a "high-priority" (HP) and a "low-priority" (LP) bit stream that are separately and independently encoded before being mapped on non-uniformly spaced constellation points, leading to different levels of error protection. However, an inherent drawback of this scheme is the severe performance degradation of...
With the advent in display technology, the 3DTV will provide a new viewing experience without the need of wearing special glasses to watch the 3D scenes. One of the key elements in 3DTV is the multi-view video coding, obtained from a set of synchronized cameras, capture the same scene from different view points. The video streams are synchronized and subsequently used to exploit the redundancy contained...
European terrestrial digital video broadcasting (DVB-T) standard has been launched based on the well knows modulation technique; orthogonal frequency division multiplexing (OFDM), which when used in conjunction with channel coding is known as COFDM. This paper will show the efficiency of COFDM in different DVB-T environments based on a compliant DVB-T simulation. An efficiency performance study of...
This paper outlines the application of orthogonal frequency-division multiplexing (OFDM) in digital communication channel, then studies the turbo codes, mentions the concatenation of turbo codes and Reed-Solomon (RS) codes and analysis the performances of the new concatenated forward error correct (FEC) scheme applied to an OFDM system based on the digital terrestrial video broadcasting (DVB-T) scheme...
The principles of orthogonal frequency division multiplexing (OFDM) modulation have been around since 1960s. However, recently, the attention toward OFDM has grown dramatically in the field of wireless and wired communication systems. This is reflected by the adoption of this technique in applications such as digital audio/video broadcast (DAB/DVB), wireless LAN (802.11a and HiperLAN2), broadband...
Orthogonal frequency-division multiplexing (OFDM) is the ubiquitous contemporary technology adopted for digital audio/video broadcasting, as well as wireless local and metropolitan area networks. Since the wireless multimedia services often have different quality-of- service requirements and their performance is sensitive to the channel conditions, the conventional fixed OFDM modulation scheme might...
Orthogonal frequency division multiplexing (OFDM) is the modulation scheme of choice for digital video broadcasting-handheld (DVB-H), which is required to operate under high mobility conditions resulting in significant Inter-carrier Interference (ICI). To mitigate ICI, several cancellation schemes have been proposed but they require reliable channel information at the receiver which is quite challenging...
Unequal error protection is the key to future transport of multimedia data. The paper presents an overview of some new approaches realizing UEP properties in physical transport, especially multicarrier modulation, or with LDPC and turbo codes. For multicarrier modulation, a UEP bit-loading method is described allowing for an arbitrary number of classes, arbitrary SNR margins between the classes and...
The following topics were dealt with: personal communications; indoor communications; mobile radio communications; MIMO communications; wireless MAN IEEE 802.16; QoS; radio resource management in beyond 3G systems; convergence of mobile and broadcast; UWB; cognitive networks; sensor networks; ad hoc networks; wireless cellular networks; interference avoidance; antennas; 4G systems; OFDM; MC-CDMA;...
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