Vas Postoyalko

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A new approach to the design of a wideband feedforward amplifier is investigated. Phase equalisers instead of linear delay lines are employed in the feedforward reference paths to match the nonlinear delay/phase characteristics of both the main and error amplifiers. A harmonic balance simulation indicates that this provides significant improvement in(More)
This paper investigates the degradation in uncoded BER due to selfinterference ISI caused by nonlinear gain compression and phase rotation in the transmission path. A QPSK scheme is simulated and the probability density functions of the nonlinear distortion effects are analysed with respect to the BER degradation. The results show that AM-AM nonlinearity(More)
Gholamreza Baghersalimi, Timothy O’Farrell, Vas Postoyalko Institute of Integrated Information Systems, School of Electronic and Electrical Engineering, University of Leeds, Woodhouse Lane, Leeds, UK, LS2 9JT Email:eengba@leeds.ac.uk, tof@ee.leeds.ac.uk, v.postoyalko@leeds.ac.uk Abstract In this paper the impact of a Radio-over-Fibre optical sub-system on(More)
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