scholarly journals IMPLEMENTATION OF FPGA-BASED DVB-T2 TRANSMITTER FOR A SECOND GENERATION DIGITAL TERRESTRIAL TELEVISION BROADCASTING SYSTEM

2021 ◽  
Vol 7 (1) ◽  
pp. 30-32
Author(s):  
Nguyen Huy Hoang ◽  
◽  
Tran Van Nghia ◽  
Le Van Ky ◽  
◽  
...  
Keyword(s):  
Channel Coding ◽  
Orthogonal Frequency Division Multiplexing ◽  
Second Generation ◽  
Single Frequency ◽  
System Generator ◽  
Television Broadcasting ◽  
Field Programmable ◽  
Broadcasting System ◽  
Digital Transmitter ◽  
Digital Terrestrial Television

Nowadays, with strong development of Science and Technology, integrated circuits continue to dominate not only in the field of digital information. Over the last several years, Technological television industry has taken huge strides and powerful transformation to meet with government’s policy about digitization of television all over the country in period 2015 – 2020. Stemming from the practical needs of “localization of products” and mastering of technological design of DVB-T2 transmitter (Digital Video Broadcasting – Terrestrial for Second generation), the authors have made an effort to research in algorithm, designed and tested in Field Programmable Gate Array (FPGA) technology. DVB-T2 is mainly aimed to replace the current standard DVB-T. The main motivation of DVB-T2 is to provide broadcasters with more advanced and efficient alternative to DVB-T standards. In DVB-T2 transmitter system, digital audio, video, and other data are compressed into a single signal to be transmitted on a single RF channel, using orthogonal frequency-division multiplexing (OFDM) with concatenated channel coding and interleaving. The higher offered bit rate makes it a suited system for carrying HDTV signals on the terrestrial TV channel. The next generation broadcasting systems should be designed to make full use of spectral resources while providing reliable transmissions in order to enable services like multichannel HDTV (High Definition Television) and innovative data casting services. The efficient usage of the radio spectrum can be achieved by the introduction of Single Frequency Networks (SFN). Digital transmitter DVB-T2 implemented on FPGA using a software Xilinx System Generator for DSP tool and Xilinx ISE Design Suite 14.7. System Generator for DSP is in conjunction on environment MATLAB-Simulink that is capable of simulating the proposed hardware structures that is synthesized and implemented by the programmable elements in Field-programmable Gate Arrays. In this project, adaptative MPEG-TS bitrate converter is designed to allows to increasing or reducing the MPEG TS rate by adding or filtering NULL packets. The entire digital transmitter DVB-T2 is integrated in one chip Xilinx FPGA Kintex-7 XC7K325T-1FFG676. Experimental design on development Kit NetFPGA-1G-CML of Digilent Corporation is performed at design department of technology center of Vietnamese Communications Television Development JSC. Authors are continuing to improve products, put into practical applications to replace the digital terrestrial television broadcasting stations that are being used in Vietnam. The article named “Implementation of FPGA-based DVB-T2 transmitter for a second generation digital terrestrial television broadcasting system” presents the research results, design methods, test results to compare, evaluate the accuracy of algorithm implementation. The results open up new directions for technological television in Vietnam.

scholarly journals EFFICIENT IMPLEMENTATION OF FPGA-BASED FORWARD ERROR CORRECTING COMBINATION AND BIT TO CELL WORD DE-MULTIPLEXER FOR A SECOND GENERATION DIGITAL TERRESTRIAL TELEVISION BROADCASTING SYSTEM

2021 ◽  
Vol 7 (2) ◽  
pp. 18-21
Author(s):  
Tran Van Nghia ◽  
◽  
Le Van Ky ◽  
Tran Minh Hai ◽  
Le Thi Trang Linh ◽  
...  
Keyword(s):  
High Speed ◽  
Second Generation ◽  
Experimental Testing ◽  
Multipath Fading ◽  
Code Design ◽  
Multipath Fading Channel ◽  
Precise Control ◽  
Television Broadcasting ◽  
Broadcasting System ◽  
Digital Terrestrial Television

This article focus on the implementation of FEC part. The motivation of the design is that FEC is an effective tool to mitigate problems associated with OFDM which stem from multipath fading channel, high speed data rate. One of the key features of BCH codes is that during code design, there is a precise control over the number of symbol errors that are correctable by the code. BCH coder proccesses parralelly with high-speed operation. 8-bit parallel data input and output helps to maximize the throughput. DVB-T2 used LDPC coder, as inner codes with word length up to 64,800 bits, enabling significant proximity to Shannon limit. This encoder supports all code rates and both normal and short frames. Output of LDPC encoder is interleaved with bit interleaver. This project was fully optimized for speed and memory area, fully synchronized by using a single clock. The design was coded in VHDL, synthesized by using Xilinx ISE Design Suite 14.7. The design has been tested on development Kit NetFPGA-1G-CML of Digilent Corporation and the bit map was downloaded into Xilinx Kintex-7 XC7K325T-1FFG676, which is integrated on experimental transmitter system DVB-T2. This research product belong to program “Research of experimental testing of second generation digital terrestrial television broadcasting system DVB-T2” of Vietnamese Communications Television Development JSC.

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.

scholarly journals I Implementasi Sistem Hermitian Generalized LED Index Modulation (H-GLIM-OFDM) pada Board FPGA Xilinx Arty Artix-7

Electrician ◽  
2020 ◽  
Vol 14 (3) ◽  
pp. 100-111
Author(s):  
Yetti Yuniati
Keyword(s):  
Visible Light ◽  
Field Programmable Gate Array ◽  
Orthogonal Frequency Division Multiplexing ◽  
Visible Light Communication ◽  
Frequency Division Multiplexing ◽  
Frequency Division ◽  
Transfer Data ◽  
System Generator ◽  
Field Programmable ◽  
Index Modulation

Abstrak— Komunikasi nirkabel menjadi jenis komunikasi yang digunakan secara luas, spektrum radio yang umumnya digunakan dalam komunikasi nirkabel menjadi tidak cukup untuk memenuhi tuntutan yang tinggi. Visible Light Communication (VLC) menjadi solusi untuk mengatasi kapasitas bandwidth yang kurang memadai ini. Orthogonal Frequency Division Multiplexing (OFDM) menjadi teknik yang dikembangkan untuk sistem komunikasi cahaya tampak karena pada teknik OFDM frekuensi yang digunakan saling orthogonal dan memungkinkan overlap antar frekuensi tanpa menimbulkan interferensi satu sama lain sehingga menghasilkan kecepatan transfer data yang tinggi. Jurnal ini membahas tentang Implementasi Sistem Hermitian Generalized LED Index Modulation (H-GLIM-OFDM). Skema dari H-GLIM-OFDM ini dirancang dalam System Generator pada bahasa pemograman Matlab. Desain di implementasikan dalam FPGA dan diterapkan dengan spesifikasi Arty Board Xilinx Artix-7. Field Programmable Gate Array (FPGA) merupakan perangkat semikonduktor yang dapat diprogram secara fleksibel dan dapat melakukan kinerja yang tinggi untuk implementasi VLC. Hasil yang didapat pada simulasi ini yaitu menggunakan pemanfaatan sumber daya desain 5% BRAM, 11% dari DSP, 8% dari LUT, 18% dari IO, dan 3% BUFG.   Kata Kunci : H-GLIM-OFDM, FPGA Arty Artix-7, Visible Light Communication, Vivado, System Generator

scholarly journals Hardware Implementation of MISO on Orthogonal Frequency Division Multiplexing Platform with the Help of Alamouti Algorithm

2017 ◽  
Vol 63 (2) ◽  
pp. 137-143
Author(s):  
Seetaiah Kilaru
Keyword(s):  
Field Programmable Gate Array ◽  
Orthogonal Frequency Division Multiplexing ◽  
Hardware Implementation ◽  
Frequency Division Multiplexing ◽  
Frequency Division ◽  
Test Bed ◽  
System Generator ◽  
Field Programmable ◽  
Simulation Results ◽  
Half Decade

Abstract Many software based OFDM techniques were proposed from last half decade to improve the performance of the system. This paper tried to implement the same with Hardware implementation. We created Hardware based MISO platform with OFDM. We implemented Alamouti algorithm on this test bed. The test bed is implemented with the help of Field Programmable Gate Array (FPGA). The test bed is functionalized with the help of FPGA through Xilinx based system generator for DSP. In this paper we considered the 2×1 MISO implementation with Alamouti algorithm. The simulation results showed that BER and SNR are considerably high for MISO than SISO. The results also proved that proposed OFDM based Alamouti implementation for MISO is excellent in all performance criterions.

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