Journal ArticleDOI
Transmission techniques for digital terrestrial TV broadcasting
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TLDR
The authors discuss the potential of OFDM signaling, with its limitations and inherent problems, as well as another potential technique that has so far been overlooked: single-carrier transmission with frequency- domain equalization, and introduces coded-OFDM (COFDM), which makes use of channel coding and frequency-domain interleaving.Abstract:
The authors discuss the potential of OFDM signaling, with its limitations and inherent problems, as well as another potential technique that has so far been overlooked: single-carrier transmission with frequency-domain equalization. The carrier synchronisation issue is dealt with before the authors introduce coded-OFDM (COFDM), which makes use of channel coding and frequency-domain interleaving. >read more
Citations
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Journal ArticleDOI
Performance of coded OFDM VIA variable guard interval
TL;DR: In this article, a new COFDM concept with a Variable GI (VGI) is proposed in order to improve the bit error rate (BER) performance in the presence of multipaths with variable delays.
AI based Digital Companding Scheme for OFDM system using custom constellation Mapping and selection
TL;DR: The proposed digital companding scheme for OFDM system based on using different constellation orderings (QAM modulator) based on depending on the data to be transmitted, 8 to 3 bit compression is proposed.
Posted Content
Diversity Order in ISI Channels with Single-Carrier Frequency-Domain Equalizers
Ali Tajer,Aria Nosratinia +1 more
TL;DR: The diversity gain achieved by single-carrier frequency-domain equalizers (SC-FDE) in frequency selective channels is analyzed and the interplay between diversity gain d, channel memory length ¿, transmission block length L, and the spectral efficiency R is uncovered.
Journal ArticleDOI
Burst Channel Error Reduction Based on Interleaving for Efficient High-Speed Wireless Communication
Fatma H. Elfouly,Rabie A. Ramadan,Fathi E. Abd El-Samie,Mnaouer Kachout,Abdullah J. Alzahrani,Jalawi Sulaiman Alshudukhi +5 more
TL;DR: In this paper , a helical interleaver was proposed for OFDM systems to efficiently handle burst channel errors and allow for bit error rate (BER) reduction, and the performance of the proposed scheme was studied over different channel models.
Journal ArticleDOI
Iterative Extrapolation for Channel Equalization in DVB-T Receivers
You-Seok Lee,Hyoung-Nam Kim +1 more
TL;DR: Simulation results show that the proposed iterative extrapolation method improves the channel-equalization performance compared to the conventional zero-forcing equalization method in terms of bit error rates in DVB-T receivers at all SNRs.
References
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Journal ArticleDOI
Multicarrier modulation for data transmission: an idea whose time has come
TL;DR: The general technique of parallel transmission on many carriers, called multicarrier modulation (MCM), is explained, and the performance that can be achieved on an undistorted channel and algorithms for achieving that performance are discussed.
Journal ArticleDOI
Analysis and Simulation of a Digital Mobile Channel Using Orthogonal Frequency Division Multiplexing
TL;DR: The analysis and simulation of a technique for combating the effects of multipath propagation and cochannel interference on a narrow-band digital mobile channel using the discrete Fourier transform to orthogonally frequency multiplex many narrow subchannels, each signaling at a very low rate, into one high-rate channel is discussed.
Journal ArticleDOI
Data Transmission by Frequency-Division Multiplexing Using the Discrete Fourier Transform
Stephen B. Weinstein,P. Ebert +1 more
TL;DR: The Fourier transform data communication system is described and the effects of linear channel distortion are investigated and a differential phase modulation scheme is presented that obviates any equalization.
Journal ArticleDOI
Frequency-Independent and Frequency-Dependent Nonlinear Models of TWT Amplifiers
TL;DR: A frequencydependent quadrature model is proposed whose parameters are obtainable from single-tone measurements and is shown to fit measured data very well.
Journal ArticleDOI
Performance of an Efficient Parallel Data Transmission System
TL;DR: A parallel quadrature AM data transmission system with a number of overlapping channels, each carrying a signaling rateb, spacedb/2apart in frequency appears to be a promising technique for achieving good performance at high information rates over bandlimited dispersive transmission media.