Journal ArticleDOI
BER sensitivity of OFDM systems to carrier frequency offset and Wiener phase noise
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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.Abstract:
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. The degradation of the bit error rate (BER), caused by the presence of carrier frequency offset and carrier phase noise is analytically evaluated. It is shown that for a given BER degradation, the values of the frequency offset and the linewidth of the carrier generator that are allowed for OFDM are orders of magnitude smaller than for single carrier systems carrying the same bit rate. >read more
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Proceedings ArticleDOI
Channel-independent non-data aided synchronization of generalized multiuser OFDM
TL;DR: An approximate analytic expression for the variance of the frequency offset estimators as a function of the number of active users and the SNR is derived and it is shown that the performance of the algorithms is asymptotically independent of the channel zero locations for quasi-synchronous systems.
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Robust Mobile WiMax preamble detection
E. Seagraves,C. Berry,Feng Qian +2 more
TL;DR: A new detection metric is proposed that takes advantage of the redundancy in both the preamble and its cyclic prefix as well as compensates for the model mismatch and is shown to offer improved performance of timing estimates over existing techniques, specifically in multipath and low SNR environments.
Proceedings ArticleDOI
Adaptive compensation of frequency selective IQ imbalance and carrier frequency offset for ofdm based receivers
Deepaknath Tandur,Marc Moonen +1 more
TL;DR: In this paper, the joint effect of frequency selective IQ imbalance at the receiver under carrier frequency offset is studied and a frequency domain per-tone equalizer based receiver structure obtained by transferring a time domain equalizer (TEQ) to the frequency domain is proposed.
Journal ArticleDOI
Bit error rate performance of orthogonal frequency-division multiplexing relaying systems with high power amplifiers and Doppler effects
TL;DR: It was shown that the resulting intercarrier interference due to the cumulative effects of the phase noise generated by these impairments per hop becomes very significant in a multihop relaying communication system and severely degrades the bit error rate performance of the system.
Journal ArticleDOI
Fast coarse frequency offset estimation for OFDM systems by using differentially modulated subcarriers
TL;DR: A fast coarse estimation method of carrier frequency offset for orthogonal frequency division multiplexing (OFDM) systems using a burst mode transmission that reveals similar estimation performance to the case of a conventional cross-correlation-based method for practical range of signal-to-noise ratio (SNR).
References
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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.
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A discrete multitone transceiver system for HDSL applications
TL;DR: A discrete multitone (DMT) transceiver design for high bit rate digital subscriber line (HDSL) access is presented and analyzed and is an excellent candidate for HDSL implementation.
Proceedings ArticleDOI
Performance of an RCPC-coded OFDM-based digital audio broadcasting (DAB) system
TL;DR: A static code design with unequal error protection (UEP) is presented that also takes auxiliary data services into account and emphasis is on the use of source-adapted channel coding with rate-compatible punctured convolutional (RCPC) codes.
Journal ArticleDOI
The effect of interpolation on the BER performance of narrowband BPSK and (O)QPSK on Rician-fading channels
K. Bucket,Marc Moeneclaey +1 more
TL;DR: By means of theoretical analysis, it is demonstrated that even simple interpolators, operating at only a few samples per symbol, yield BER degradations that are limited to a small fraction of a dB.
Journal ArticleDOI
Digital HDTV broadcasting over the CATV distribution system
Marc Moeneclaey,Mark Van Bladel +1 more
TL;DR: This contribution deals with the digital broadcasting of HDTV channels over the cable television (CATV) distribution system, using either single-carrier QAM or an orthogonal frequency division multiplex of many QAM carriers to represent an HDTV channel.