Multicarrier receiver with a sliding window Fourier transform and a Fourier transform

摘要

A Multicarrier receiver (RX) suitable to receive a sequence of cyclically extended multicarrier symbols (MS) comprises the coupling of a window (WIN), adapted to window said multicarrier symbols (MS), a Fourier transformer (FFTRANS), coupled to said window (WIN), and adapted to perform one windowed Fourier transform for all carriers in said windowed multicarrier symbol (MS), a per-carrier frequency domain equalizer (PC-FEQ), coupled to said windowed Fourier transformer (FFTRANS) and comprising a tapped delay line (TD1, TD2, ..., TDN/2) per carrier in said multicarrier symbol (MS), and means for performing the equivalent to a sliding windowed Fourier transform, including a sliding Fourier transform. Thus windowing and equalization in the frequency domain can be combined without unduly increasing computational complexity.