Patent ID: 7782976
Filing Date: 2010-08-24
Classification: H04L

Abstract:
1. A waveform generator, comprising: a. a means for generating a signal time in symbol periods, b. a symbol coefficient look up table that outputs a current symbol coefficient determined from an integer part of said signal time in symbol periods, c. a plurality of symbol shape look up tables that output current symbol shapes of prior and future symbols determined from the fractional part of said symbol time in symbol periods, where there are more addresses in said symbol shape look up tables than there are samples per symbol period, d. a plurality of consecutive symbol coefficient delay registers outputting a plurality of future and prior symbol coefficients, where each one delays said current symbol coefficient by one additional symbol period, e. a plurality of multipliers that generate a plurality of future and prior symbol values from multiplying said future and prior symbol coefficients by said future and prior symbol shapes, f. a symbol combiner that sums said future and prior symbol values to generate interpolated modulation, whereby said interpolated modulation will include scaling changes when said signal time in symbol periods is not an integer.