Patent ID: 6212220
Filing Date: 2001-04-03
Classification: H04J

Abstract:
A system for modulating an information signal in a spread spectrum communication system, the system comprising:a channel sequence combiner receiving a first combined signal which includes the information signal in a modulated form, and receiving a repetitive maximum length channel sequence, the channel sequence combiner combining the first combined signal with a repetitive maximum length channel sequence to produce a second combined signal; anda selector coupled to receive the first combined signal, the second combined signal and a repetitive strobe signal, the selector selecting one of the first combined signal and the second combined signal to produce a modulated signal based upon a value of the repetitive strobe signal, wherein the repetitive strobe signal is of a length greater than the repetitive maximum length channel sequence; whereinthe repetitive maximum length channel sequence is a non-orthogonal repeating bit sequence of length N and wherein the repetitive strobe signal is non-orthogonal repeating bit sequence of at least length N+1; andwherein bits 0 through N of the repetitive strobe signal cause the selector to select the second combined signal as the modulated signal and wherein bit N+1 of the repetitive strobe signal selects the first combined signal as the modulated signal.