Proceedings ArticleDOI
An analysis of orthogonal frequency-division multiplexing for mobile radio applications
Hikmet Sari,G. Karam,I. Jeanclaude +2 more
- pp 1635-1639
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TLDR
Using static and time-varying channel impulse responses, the authors analyze the performance of orthogonal frequency-division multiplexing on multipath fading channels and show that, provided it employs a frequency domain equalizer, single-carrier transmission substantially outperforms OFDM signalling.Abstract:
Using static and time-varying channel impulse responses, the authors analyze the performance of orthogonal frequency-division multiplexing (OFDM) on multipath fading channels. They show that, provided it employs a frequency domain equalizer, single-carrier transmission substantially outperforms OFDM signalling, a result that contradicts the usual claims that OFDM signalling is more resistant to multipath fading than is standard single-carrier transmission. This finding is supported by computer simulation results and analytical arguments related to the decision process. The implication of the results is that not only OFDM signalling increases the system sensitivity to nonlinear distortion and carrier synchronization errors, but it also turns out to offer no performance advantage on fading radio channels. >read more
Citations
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Journal ArticleDOI
Transmission techniques for digital terrestrial TV broadcasting
TL;DR: 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.
Proceedings ArticleDOI
Peak-To-Average Power Ratio of Single Carrier FDMA Signals with Pulse Shaping
TL;DR: This paper analytically derive the time domain SC-FDMA signals and numerically compare PAPR characteristics using the complementary cumulative distribution function (CCDF) of P APR, and finds that localized FDMA (LFDMA) has higher PAPr than interleavedFDMA (IFDMA) but somewhat lowerPAPR than OFDMA.
Journal ArticleDOI
Great expectations: the value of spatial diversity in wireless networks
TL;DR: This paper adopts spatial diversity as a central theme, and illustrates its benefits across the physical (signal transmission/coding and receiver signal processing) and networking (resource allocation, routing, and applications) layers.
Proceedings ArticleDOI
Frequency-domain equalization of mobile radio and terrestrial broadcast channels
TL;DR: The results indicate that a single-carrier system with a frequency-domain equalizer achieves similar performance to coded-OFDM, while alleviating the carrier synchronization and nonlinear distortion problems inherent to this technique.
Journal ArticleDOI
Exploiting input cyclostationarity for blind channel identification in OFDM systems
TL;DR: A novel subspace approach for blind channel identification using cyclic correlations at the OFDM receiver and Simulations of the proposed channel estimator along with its performance in OFDM systems combined with impulse response shortening and Reed-Solomon coding are presented.
References
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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
BER sensitivity of OFDM systems to carrier frequency offset and Wiener phase noise
TL;DR: In this contribution the transmission of M-PSK and M-QAM modulated orthogonal frequency division multiplexed (OFDM) signals over an additive white Gaussian noise (AWGN) channel is considered and the degradation of the bit error rate is evaluated.