Patent ID: 9491012
Filing Date: 2016-11-08
CPC Classification: H03F,H04B,H04L

Claim Text:
1. A system comprising: a pulse shaper configured to receive a modulated data symbol stream and to apply direct over-sampled pulse shaping encapsulating Direct Sequence Spread Spectrum (DSSS) spreading, using a lookup table (LUT), to the data symbol stream to produce an oversampled baseband signal at a desired sampling rate, the pulse shaper including a plurality of flip flops configured to access the LUT, a first flip flop of the plurality of flip flops configured to access the LUT corresponding to a next data symbol of a three symbol sequence of the data symbol stream, a second flip flop of the plurality of flip flops configured to access the LUT corresponding to a previous data symbol of a three symbol sequence of the data symbol stream, and a third flip flop of the plurality of flip flops configured to access the LUT for a current data symbol of a three symbol sequence of the data symbol stream and to select the output of the LUT or the negative of the output of the LUT; and a transmitter configured to transmit the oversampled baseband signal.