Multiplier-less data processing techniques and related implementations adapted for use in polar modulator
AssigneeSamsung Electronics Co., Ltd.
InventorsDmitry Voloshin, Il-Yong Jong
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Abstract
A modulator performs data processing operations such as interpolation and fractional delay adjustment on amplitude and/or phase data by performing shift operations in lieu of multiplication operations. In selected embodiments, the modulator samples input data at a first rate, processes the sampled input data using the first rate, and then interpolates the processed data to produce interpolated data. The modulator then samples the interpolated data at a second rate higher than the first rate and generates output data at the second rate.
Claims15
A method of interpolating data in a modulator, the method comprising:
- without performing a multiplication operation, computing coefficients for an n-th order polynomial equation approximating the data by performing shift and add operations in relation to the data;
- computing interpolated data values based on the coefficients;
- and,
- computing smoothed interpolated data values by combining the n-th order polynomial equation with another n-th order polynomial equation.
An interpolation unit for a modulator, comprising:
- a plurality of shifters and adders adapted to compute coefficients for one or more n-th order polynomial equations approximating a plurality of input data values without performing a multiplication operation;
- and,
- a plurality of filter banks adapted to generate interpolated data values based on the coefficients.
Dependencies are inferred from the claim text.