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
Effects of Nonlinear Amplifier and Partial Band Jammer in OFDM with Application to 802.11n WLAN
David W. Chi,Pankaj K. Das +1 more
TL;DR: In this article, the combined effects of nonlinear distortion and partial band jamming in an OFDM system through a Rayleigh fading channel were analyzed, where the jammer is assumed to transmit a collection of single tone jamming signals which have a frequency off set with respect to the desired signal.
Proceedings ArticleDOI
FOCUS: Robust Visual Codes for Everyone
TL;DR: This work presents FOCUS, a new code design that does not require this explicit trade-off between code capacity and the reader's channel quality and builds on concepts from OFDM to encode data at different levels of spatial detail.
Proceedings ArticleDOI
SINR analysis of OFDM and f-OFDM for machine type communications
Kun Chen Hu,Ana Garcia Armada +1 more
TL;DR: The interference is analysed for both types of signals and the expression of the SINR is found allowing us to compare the behavior of OFDM and f-OFDM in these circumstances and some simulations are shown to validate the theoretical analysis and explore some foreseen MTC scenarios.
Proceedings ArticleDOI
Carrier Frequency Offset and I/Q Imbalances Compensation in OFDM Systems
TL;DR: Based on the subcarrier allocation (SCA) of OFDM signal, a novel approach for compensating CFO and I/Q imbalances is proposed and can be extended to a blind compensation scheme, suitable for OFDM signals with asymmetric SCA.
Posted Content
Phase Noise Influence in Coherent Optical OFDM Systems with RF Pilot Tone: Digital IFFT Multiplexing and FFT Demodulation
TL;DR: Results suggest that there is a free choice between CO-OFDM and a high capacity nPSK implementation at least as long as the phase noise influence is concerned, and an important and novel observation is that the two types of systems have very closely the same BER as a function of transmission distance for the same capacity.
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.