Channel equalizer performance analysis for Hybrid 3DTV in ATSC 3.0 standard
Recently, next generation broadcasting standardization has being conducted to transmit UHDTV contents. In this paper, an equalizer using least square estimation is designed and reception performance is analyzed for Hybrid 3DTV transceiver system. Equalizer structure for Hybrid 3DTV is designed by referring to ATSC 3.0 PHY layer. Hybrid 3DTV uses time division multiplexing for transmitting two physical layer pipes. The equalizer performance is simulated on Pedestrian Indoor channel which has long echoes. Simulation result shows that equalizer performance for Hybrid 3DTV is improved about 5 dB.
Comparative Performance Analysis of Training Sequences in Equalization
During the last decade we have experienced an increasing demand for wireless communication systems, that require the implementation of different functions, including equalization, to establish a reliable connection between nodes of the network. The correlation and statistical properties of the training sequences have been exploited in wireless systems in the past, however there are few studies that compare the impact of these sequences on the efficacy of the equalization process where they are implemented. Our experimental design considers five well known training sequences of the same length, including Barker, Willard, Neuman-Huffman, a Random binary sequence, and the Zadoff-Chu (ZC) code, and a new proposed sequence. The simulation results show that Random code is the best performing training sequence, especially when it is used in environments with strong levels of inter-symbol interference (ISI), ZC performs better for conditions with lower ISI and our proposed sequence named EoP performs in second place for any ISI level.
DVB-T and DVB-T2 performance in fixed terrestrial TV channels
This paper deals with the DVB-T (Digital Video Broadcasting-Terrestrial) and DVB-T2 (DVB-2nd Generation Terrestrial) standards and their transmission performance in fixed TV channels. For the analysis and simulation of performance of both standards, classical Ricean and Rayleigh multipath fading channels with 20 independent paths were used. Simulation results of the BER (Bit Error Ratio) before and after FEC (Forward Error Correction) decoding were evaluated and compared for DVB-T and DVB-T2 standards. Dependences of MER (Modulation Error Ratio) on C/N (Carrier-to-Noise Ratio) were also obtained for both standards. Moreover, optimal configuration of the new DVB-T2 system for broadcasting of HDTV (High Definition Television) services was explored. Appropriate applications for these simulations were developed in MATLAB. Finally, achieved results are evaluated and clearly discussed.