Results 131 to 140 of about 2,923 (181)

Modulation Classification In Multipath Fading Environments

2007 4th International Symposium on Wireless Communication Systems, 2007
A new approach to classification of MQAM/MPSK signals in multipath fading environments is presented The proposed approach, in which the two-step equalization strategy and higher-order cumulants based classifier are adopted, can effectively classify the MPSK and high-order QAM signals.
Lin Yang, Zhi Ji, Xiaodong Xu 0004, Xuchu Dai, Peixia Xu   +4 more
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Spectrogram analysis of multipath fading channels

2015 IEEE 26th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC), 2015
The analysis of the Doppler power spectral density (PSD) of measured and simulated data is an important topic in the area of mobile radio channel modelling. In this paper, we estimate the Doppler PSD of multipath fading channels by using the concept of the spectrogram.
Matthias Pätzold 0001, Neji Youssef
openaire   +1 more source

Soft Detection of CPM in Multipath Fading

2013 IEEE 77th Vehicular Technology Conference (VTC Spring), 2013
We consider single-h continuous phase modulation (CPM) systems that use linear prediction receivers with coefficient look up table (LUT) for mitigating the effect of multipath fading. This type of receiver shows superior performance over conventional ones; however, high channel delay spread and fast fading can still lead to a high error floor in its ...
Tri Pham, Philippa A. Martin, Desmond P. Taylor, Clive Horn   +3 more
openaire   +1 more source

A DCSK in multipath fading channels

2013 International Conference on Communications, Circuits and Systems (ICCCAS), 2013
Performance of Differential Chaos Shift Keying (DCSK) with digital signal processing for wireless communication is analyzed, which generalized application of DCSK into L-path Nakagami fading channels, figure illustration shows that Bit Error Rate (BER) of DCSK decreases as chaotic spreading factor or Signal-to-Noise Ration of power (SNR) increases.
Chunfu Li, Min Wei, Guangjun Wen
openaire   +1 more source

Three-dimensional Scanner for Multipath Fading Measurement

2020 International Conference on Information and Communication Technology Convergence (ICTC), 2020
In order to design the indoor internet of things (IoT) applications such as smart buildings, it is crucial to understand the propagation characteristics of the indoor environments. To this end, we implement the three-dimensional (3D) scanner with the size of 1.5 × 1.5 × 1.5 m (movable range of approximately 1.3 × 1.3 × 1.3 m).
Issei Makino, Nobuhiko Miki
openaire   +1 more source

MLSE equalization and decoding for multipath-fading channels

IEEE Transactions on Communications, 1991
A combined MLSE (maximum likelihood sequence estimation) equalizer and decoder with D-diversity reception is analyzed for slowly time-varying frequency-selective Rayleigh fading channels. An upper bound on the (decoded) bit error probability is derived. This bound is tight for high signal-to-noise ratios or when diversity reception is employed.
Wern-Ho Sheen, Gordon L. Stüber
openaire   +1 more source

GQR models for multipath Rayleigh fading channels

IEEE Journal on Selected Areas in Communications, 2001
In this paper, reduced complexity statistical models for the representation of wide sense stationary-uncorrelated scattering doubly selective fading channels are developed. Their derivation is based on the evaluation of Fourier integrals by means of Gaussian quadrature rules.
CHIAVACCINI, Eugenio, VITETTA, Giorgio Matteo   +1 more
openaire   +1 more source

Multistage multiuser detector for multipath fading channel

European Transactions on Telecommunications, 2001
AbstractIn this paper, the multistage multiuser detector for communication over multipath fading channel is considered. The detector consists of a matched filters bank and a linear equalizer whose outputs are diversity combined to produce initial data estimates.
Dejan M. Novakovic, Miroslav L. Dukic
openaire   +1 more source

More on the Multipath Fading Channel Model

IEEE Transactions on Communications, 1981
Selective fading due to muitipath on a typical narrowband line-of-sight microwave radio path is represented with a simplified three-ray model. This model provides a satisfactory description of the frequency transfer characteristics of almost all fades observed during three separate propagation experiments. Data were obtained for a 30 MHz bandwidth at 6
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Analysis of a CDMA downlink in multipath fading channels

2002 IEEE Wireless Communications and Networking Conference Record. WCNC 2002 (Cat. No.02TH8609), 2003
This paper deals with the performance analysis of a CDMA downlink in multipath fading channels. An approximate expression for the demodulated signal-to-noise ratio is developed for a conventional RAKE receiver. The expression includes an orthogonality factor that quantifies the performance gain of using orthogonal spreading codes in the presence of a ...
Wang Hai, Niclas Wiberg
openaire   +1 more source