Error vector magnitude (EVM) as a performance metric for M-ary quadrature amplitude modulation (QAM) formats in optical coherent systems is presented. It shown that the calibrated BER, which would otherwise be under-estimated without correction factor, can reliably monitor of near target BER 10?3 phase shift keying (QPSK), 16-QAM, and 64-QAM employing carrier recovery with differential decoding...

The demand for higher data rates in mobile communications is leading to the use of higher order modulation schemes, such as 8-PSK. In such systems distortion is a consequence of magnitude and phase disturbances. In this work we investigate the performance of an 8-PSK with phase distortion due to Gaussian bandpass noise, through analytical and simulation studies. Results are presented relating E...

This paper discusses practical constraints of Error Vector Magnitude (EVM) measurements for high-coverage Radio Frequency Integrated Circuit (RFIC) device testing. Noise, distortion, spurious signals, and phase noise all degrade EVM, and therefore EVM provides a comprehensive measure of an RFIC’s quality of use in digital communications. New wireless standards with large instantaneous bandwidth...

This work investigates the effects of magnitude and/or phase distortions, in 8-Phase Shift Keying (8-PSK) systems, due to Gaussian bandpass noise. Analytical expressions are derived to compute the performance of the distorted 8-PSK signals in terms of error vector magnitude (EVM), symbol error rate (SER) and Es/No. The results show that the same value of EVM may result in different SER values d...