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
Dissecting OFDM: the independent roles of the cyclic prefix and the IDFT operation
TL;DR: An orthogonal frequency-division multiplex system encodes each block of data by first performing an inverse discrete Fourier transform operation and then adding a cyclic prefix, which allows almost all channels, including channels with otherwise unstable inverses, to be inverted accurately.
Proceedings ArticleDOI
Low density spreading for multicarrier systems
TL;DR: Low density spreading for multicarrier (MC) systems has been proposed to exploit the trade-off between the receiver complexity and performance improvement and the structured LDS allows the use of the Viterbi algorithm to implement the ML detection computationally efficiently.
Proceedings ArticleDOI
A comparison of the performance of linearly equalized single carrier and coded OFDM over frequency selective fading channels using the random coding technique
TL;DR: It is shown that for low SNRs and low code rates, the cutoff rates of both systems are approximately the same, and for low to medium code rates COFDM and a linearly equalized single carrier system perform approximately identically.
Posted Content
A Survey on Prototype Filter Design for Filter Bank Based Multicarrier Communications
TL;DR: The goals of the present survey are to provide an extensive and unified review of wavef orm design issues for filter bank based multicarrier systems, shed some light on advantages and disadvantages of this technolo gy, and provide pointers to open research problems.
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.