Blind phase tracking method for a filter bank multi-carrier (FBMC)receiver

摘要

A blind phase tracking method for an FBMC receiver. The frequency components of the received signal, after translation into baseband and filtered by an analysis filter bank, is processed by a phase estimation module. The latter estimates for each subcarrier the data carried and, where appropriate, the interference generated by the other data. A simplified symbol is then constructed with the sign of the data thus estimated and, where appropriate, the sign of the interference thus estimated. The phase estimation module determines the phase from the frequency components and simplified symbols. The phase correction is performed by multiplication by a phase correction factor.

主权项

1. A blind phase tracking method for a Filter Bank Multi-Carrier (FMBC) receiver, whereby [a received signal is demodulated into baseband, filtered by an analysis filter bank and subjected to fast Fourier transform (FFT), in order to provide a plurality of frequency components, whereby each frequency component corresponds to a sub-carrier, the method comprising:
estimating data transmitted on each subcarrier from said frequency components; determining the sign of the data thus estimated; estimating from the data thus estimated interference affecting each of the subcarriers; determining the sign of each interference thus estimated; constructing a simplified symbol for each subcarrier from the sign of the estimated data for this subcarrier and the sign of the estimated interference for this subcarrier, whereby the real and the imaginary part of the simplified symbol is each encoded in a single bit; estimating a phase difference between the frequency components and said simplified symbols; applying a phase correction to the frequency components from the phase difference thus estimated.