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The Effect of Carrier Phase Error on the Performance of a Duobinary Shaped QPSK Signal

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2 Author(s)
Taylor, D.P. ; McMaster Univ., Hamilton, Ont., Canada ; Cheung, D.

An analysis is presented showing the effect of carrier phase error on the error-rate of a duobinary shaped, quaternary, phaseshift keying digital radio system. A simple upper bound on the probability of error as a function of phase error is derived and the results are compared to those obtained by computer simulation. The conclusion is reached that such a system exhibits approximately 1.0 dB degradation for a carrier phase error of 3° at an error-rate of 10-5and a 10 dB degradation at a phase error of 15°.

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Communications, IEEE Transactions on  (Volume:25 ,  Issue: 7 )