Patent ID: 8102897
Filing Date: 2012-01-24
Classification: H04B

Abstract:
1. A direct sequence spread spectrum (DSSS) system accommodating variable chipping rates, the system comprising: a plurality of at least three predefined component codes, wherein each one of the plurality of component codes has a corresponding nominal length, the nominal lengths are relatively prime to one another, and at least one of the nominal lengths comprises a plurality of prime number multiplicands; a first terminal comprising a first transmitter configured to transmit a first DSSS signal using a first chipping rate, wherein the first DSSS signal uses a first composite code generated by logically combining the component codes; and a second terminal comprising a second transmitter configured to transmit a DSSS signal using a second chipping rate wherein the second chipping rate equals the first chipping rate divided by at least one of the plurality of prime number multiplicands, and wherein the second DSSS signal uses a second composite code generated by logically combining the component codes, wherein at least one of the component codes is shortened to a length equal to the corresponding nominal length divided by the at least one of the plurality of prime number multiplicands.