scholarly journals Digital Transmission. A Study on Equalization of OFDM Signal using Scattered Pilot Symbols.

1998 ◽  
Vol 52 (11) ◽  
pp. 1650-1657 ◽  
Author(s):  
Makoto Itami ◽  
Mayuko Yamashita ◽  
Masahiro Kuwabara ◽  
Kohji Itoh
Keyword(s):  
Digital Transmission ◽  
Pilot Symbols ◽  
Ofdm Signal

A Complex Support Vector Machine Approach to OFDM Coherent Demodulation

2011 ◽  
pp. 858-877
Author(s):  
M. Julia Fernández-Getino García ◽  
José Luis Rojo-Álvarez ◽  
Víctor P. Gil-Jiménez ◽  
Felipe Alonso-Atienza ◽  
Ana García-Armada
Keyword(s):  
Orthogonal Frequency Division Multiplexing ◽  
Wireless Channel ◽  
Support Vector ◽  
Ofdm Systems ◽  
Coherent Demodulation ◽  
Pilot Symbols ◽  
Ofdm Signal ◽  
Svm Algorithm ◽  
Wireless Channel Models ◽  
Non Gaussian

Most of the approaches to digital communication applications using support vector machines (SVMs) rely on the conventional classification and regression SVM algorithms. However, the introduction of complex algebra in the SVM formulation can provide us with a more flexible and natural framework when dealing with complex constellations and symbols. In this chapter, an SVM algorithm for coherent robust demodulation in orthogonal frequency division multiplexing (OFDM) systems is studied. We present a complex regression SVM formulation specifically adapted to a pilot-based OFDM signal, which provides us with a simpler scheme than an SVM multiclassification method. The feasibility of this approach is substantiated by computer simulation results obtained for Institute of Electrical and Electronic Engineers (IEEE) 802.16 broadband fixed wireless channel models. These experiments allow us to scrutinize the performance of the OFDM-SVM system and the suitability of the e-Huber cost function in the presence of non-Gaussian impulse noise interfering with OFDM pilot symbols.

A Complex Support Vector Machine Approach to OFDM Coherent Demodulation

2011 ◽  
pp. 179-202
Author(s):  
M. Julia Fernández-Getino García ◽  
José Luis Rojo-Álvarez ◽  
Víctor P. Gil-Jiménez ◽  
Felipe Alonso-Atienza ◽  
Ana García-Armada
Keyword(s):  
Orthogonal Frequency Division Multiplexing ◽  
Wireless Channel ◽  
Support Vector ◽  
Ofdm Systems ◽  
Coherent Demodulation ◽  
Pilot Symbols ◽  
Ofdm Signal ◽  
Svm Algorithm ◽  
Wireless Channel Models ◽  
Non Gaussian

Most of the approaches to digital communication applications using support vector machines (SVMs) rely on the conventional classification and regression SVM algorithms. However, the introduction of complex algebra in the SVM formulation can provide us with a more flexible and natural framework when dealing with complex constellations and symbols. In this chapter, an SVM algorithm for coherent robust demodulation in orthogonal frequency division multiplexing (OFDM) systems is studied. We present a complex regression SVM formulation specifically adapted to a pilot-based OFDM signal, which provides us with a simpler scheme than an SVM multiclassification method. The feasibility of this approach is substantiated by computer simulation results obtained for Institute of Electrical and Electronic Engineers (IEEE) 802.16 broadband fixed wireless channel models. These experiments allow us to scrutinize the performance of the OFDM-SVM system and the suitability of the e-Huber cost function in the presence of non-Gaussian impulse noise interfering with OFDM pilot symbols.

Analysis of timing jitter in digital transmission systems

2001 ◽  
Vol 84 (8) ◽  
pp. 1-13
Author(s):  
Kazuhiro Miyauchi ◽  
Isamu Wakabayashi ◽  
Hiroki Shibayama
Keyword(s):  
Digital Transmission ◽  
Timing Jitter ◽  
Transmission Systems

An Approach to Improve the Quality of OFDM Signal Using Papr Reduction Schemes

2017 ◽  
Vol 5 (10) ◽  
pp. 360-366
Author(s):  
Satyanarayan. K. Padaganur ◽  
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...  
Keyword(s):  
Papr Reduction ◽  
Ofdm Signal
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