The Design of Hybrid Symmetric-FIR/Analog Pulse-Shaping Filters

This correspondence presents a method for designing linear-phase square-root (SR) FIR digital filters that alleviate the effect of receiver timing jitter. We take a newly conceived parameter, the "roughness" of the analog/FIR-SR filter impulse response, into account. We show that the error...

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Bibliographic Details
Published in:IEEE transactions on signal processing 2012-04, Vol.60 (4), p.2060-2065
Main Authors: Chia-Yu Yao, Willson, A. N.
Format: Article
Language:English
Subjects:
Applied sciences
Clocks
Communication systems
Design engineering
Detection, estimation, filtering, equalization, prediction
Digital filters
Exact sciences and technology
Finite impulse response filter
Impulse response
Information, signal and communications theory
Interference
Intersymbol interference
linear-phase FIR filter
Modulation, demodulation
Nyquist filter
QAM
receiver clock jitter
Receivers
Roughness
Signal and communications theory
Signal, noise
square-root filter
Strontium
Telecommunications and information theory
Timing jitter
Transmitters
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Summary:This correspondence presents a method for designing linear-phase square-root (SR) FIR digital filters that alleviate the effect of receiver timing jitter. We take a newly conceived parameter, the "roughness" of the analog/FIR-SR filter impulse response, into account. We show that the error-performance of a system employing a matched SR filter pair, in the presence of receiver timing jitter, is more strongly related to how well the roughness parameter is minimized, than it is to the maximizing of the eye width caused by the Nyquist pulse. Design examples validate the proposition that the proposed method can lead to improved error performance of a high-order QAM communication system in the presence of receiver clock jitter.
ISSN:1053-587X
1941-0476
DOI:10.1109/TSP.2011.2180900