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
Combined Pilot-Aided and Decision-Directed Carrier Synchronization for Filtered Multitone Wireless Systems
TL;DR: The estimation algorithm pursued is derived from the maximum likelihood principle and takes advantage of both pilot symbols and also the unknown information-bearing symbols through specific differential decision-directed processing to improve the frequency acquisition range without degrading estimation accuracy.
Proceedings ArticleDOI
Blind Equalization in OFDM Systems Exploiting Guard Interval Redundancy
TL;DR: A new low-complexity equalizer for OFDM systems is introduced, which in the presence of a guard interval, utilizes existing redundancy in the time domain to completely eliminate inter-symbol-interference and is proved that the usage of this guard interval redundancy is sufficient to obtain a zero-forcing time domain equalizer of the channel.
Proceedings ArticleDOI
Performance of fast frequency hopping OFDM under Doppler spread
Ahmet Oturak,Ertan Öztürk +1 more
TL;DR: The performances of fast frequency hopping OFDM (FFH/OFDM) and conventional OFDM signals are evaluated and compared numerically over Doppler spread flat Rayleigh fading channels with an equal channel gain for all subcarriers.
Journal ArticleDOI
Bit-error-rate-minimizing channel shortening using post-FEQ diversity combining and a genetic algorithm
Gokhan Altin,Richard K. Martin +1 more
TL;DR: A channel shortener and frequency domain equalizer are developed for cyclic prefixed systems, which directly attempt to minimize the bit error rate.
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.