… communication system performance using16-QAM, 64-QAM, … quadrature phase-shift keying (QPSK) partitioning approach … test phases, the angle interval and the movingaverage filter …
Y Zhang, T Liu, C Jin, T Xu, M Tan, J Zhao, T Xu - Optics Communications, 2024 - Elsevier
… In this work, we have further improved the QPSKpartition … , within a slidingwindow, conform to the QPSK modulation format … and averaging Y ( n ) 4 within each CPR slidingwindow can …
… signal, but the carrierphase values at the beginning of each … proto type 200 M bit/s 16-QAM system. They used differential … mean average energy were required (eg unit average energy…
J Hoxha, S Shimizu, G Cincotti - Telecommunication Systems, 2020 - Springer
… For phase noise estimation a joint feed-forward carrierphase … FFCPE scheme for PM-16-QAM can tolerate laser linewidth … Following the Savory method [48], we find an average energy …
… the quadrature phase shift keying (QPSK), the 16-QAM and the … , such as constellation partitioning and symbol classification, … average and the Viterbi-Viterbi algorithms require the use of …
… three advanced carrierphaserecovery techniques that are … move from QPSK to higher order QAM formats (eg 16-QAM) … of the slidingaverage of twice estimated phase noise is proposed…
… carrierphaserecoveryusing a slidingwindow two-stage simplified QPSKpartitioning and QPSK … Figure 18 shows the dependence of the BER (average of the three channels) on the per…
… of the carrierphase is performed using the 16QAM-modified (QPSKpartitioning) Viterbi & … maximum reach of the system based on the average BER among all subcarriers, from now …
… changes infeasible due to the long averagingwindow needed to reduce … QPSKpartitioning and can be extended to 256QAM. However, the required length of the averagingwindow is …