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
Pilot-based channel estimation for OFDM systems by tracking the delay-subspace
TL;DR: The presented techniques are based on the observation that the wireless radio channel can be parametrized as a combination of paths, each characterized by a delay and a complex amplitude, which shows fast temporal variations due to the mobility of terminals while the delays are almost constant over a large number of OFDM symbols.
Journal ArticleDOI
Novel Index Modulation Techniques: A Survey
TL;DR: A survey on IM is presented to provide the readers with a better understanding of its principles, advantages, and potential applications and a range of challenges and open issues on IM are discussed.
Patent
Single chip VLSI implementation of a digital receiver employing orthogonal frequency division multiplexing
Peter Anthony Keevill,Dawood Alam,John Matthew Nolan,Matthew James Collins,Thomas Foxcroft,David Huw Davies,Jonathan Parker +6 more
TL;DR: In this paper, a single chip implementation of a digital receiver for multicarrier signals that are transmitted by orthogonal frequency division multiplexing is presented, which has highly accurate sampling rate control and frequecy control circuitry.
Journal ArticleDOI
Companding transform for reduction in peak-to-average power ratio of OFDM signals
TL;DR: It is shown by simulations that the proposed general companding transform method may significantly improve the performance of OFDM systems in radio channels by carefully choosing the companding form and parameters.
Journal ArticleDOI
Adaptive frequency-domain equalization and diversity combining for broadband wireless communications
TL;DR: A new kind of adaptive equalizer that operates in the spatial-frequency domain and uses either least mean square (LMS) or recursive least squares (RLS) adaptive processing and requires only /spl sim/50 complex operations per detected bit, which is close to achievable with state-of-the-art digital signal processing technology.
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.