Carrier Phase Estimation Assisted by Pilot Symbol for Power Efficient Modulation with Honeycombed Constellation

This paper proposes a carrier phase estimation of a power efficient APSK signal with a honeycombed constellation at a receiver in point-to-multi-point fixed wireless access systems using quasimillimeter frequency band. The signal has a lower amplitude level of a maximum signal vector than a conventional QAM signal. The signal also has a lower average output power. A reference carrier phase of the signal is estimated with a time domain pilot signal that is inserted as a frame header in order to obtain a burst demodulation capability. A computer simulation is carried out in order to estimate a performance of the demodulation. Simulation results show that the APSK signal can obtain a better symbol error rate performance than the QAM signal. Key-Words: quasi-millimeter frequency band, point-to-multi-point fixed wireless access system, carrier phase estimation, pilot signal, burst demodulation, APSK, QAM, power efficiency