Patent ID: 8331468
Filing Date: 2012-12-11
Classification: H04L

Abstract:
1. An apparatus, comprising: time pre-rotation module configured to time shift bits of at least one of ending samples of a symbol to a beginning of said symbol to form a time-rotated symbol; an interpolator configured to construct an up-sampled symbol from said time-rotated symbol; and a cyclic postfix module configured to insert a cyclic postfix at an end of said up-sampled symbol to form an expanded up-sampled symbol, wherein said interpolator comprises: wherein a length of said cyclic postfix is a function of a ratio of a number of coefficients of an inverse discrete Fourier transform employed by said inverse discrete Fourier transform module to a number of coefficients of a discrete Fourier transform employed by said discrete Fourier transform module and corrected for fractional numbers.