Title :
On impulse response measurement techniques for linear tape recording channels
Author_Institution :
Inst. for Exp. Math., Essen, Germany
Abstract :
We apply Golay (1961) complementary sequences for measuring the impulse response and the amplitude and phase transfer functions of a linear magnetic tape recording channel. Our experimental channel suffers from nonlinear distortion caused by a magnetoresistive sensor. The measured characteristics, in particular the amplitude transfer function, show a better performance than the same characteristics obtained with the de facto standard impulse response measurement technique using feedback shift register sequences. Based on a practical nonlinear Volterra model of our experimental tape recording channel, we analyze the artefacts due to second and third order nonlinear distortion which can occur in the Golay impulse responses and transfer functions
Keywords :
binary sequences; digital magnetic recording; magnetic sensors; magnetoresistive devices; transfer functions; transient response; Golay complementary sequences; Golay impulse responses; amplitude transfer function; artefacts; experimental tape recording channel; feedback shift register sequence; impulse response measurement; linear tape recording channels; magnetoresistive sensor; measured characteristics; nonlinear Volterra model; nonlinear distortion; performance; phase transfer function; second order nonlinear distortion; standard impulse response measurement; third order nonlinear distortion; Distortion measurement; Magnetic recording; Magnetic sensors; Magnetoresistance; Measurement techniques; Nonlinear distortion; Particle measurements; Phase measurement; Sensor phenomena and characterization; Transfer functions;
Conference_Titel :
Global Telecommunications Conference, 1996. GLOBECOM '96. 'Communications: The Key to Global Prosperity
Conference_Location :
London
Print_ISBN :
0-7803-3336-5
DOI :
10.1109/GLOCOM.1996.587574
