Correlator for spread spectrum communications systems
First Claim
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1. In a communications system wherein data is recovered by correlating a received spread spectrum signal with a known predetermined chip sequence, an improved correlator comprising:
- a correlation register having N stages, where N is an integer greater than zero, with each stage corresponding to a signal chip in said sequence, said correlation register being coupled to receive said spread spectrum signal;
means for autocorrelating each of said N stages with the corresponding chips of said sequence; and
means for modifying said sequence to accommodate multiple communication channels.
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Abstract
An improved correlator for use in a spread spectrum communications system which operates with a predetermined chip sequence includes an N-stage correlation register, wherein each stage corresponds to a signal chip in the sequence, an a means for autocorrelating each of the N stages with the corresponding chips in the sequence. The correlator further includes a means for modifying the sequence to accomodate multiple communication channels.
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Citations
5 Claims
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1. In a communications system wherein data is recovered by correlating a received spread spectrum signal with a known predetermined chip sequence, an improved correlator comprising:
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a correlation register having N stages, where N is an integer greater than zero, with each stage corresponding to a signal chip in said sequence, said correlation register being coupled to receive said spread spectrum signal; means for autocorrelating each of said N stages with the corresponding chips of said sequence; and means for modifying said sequence to accommodate multiple communication channels. - View Dependent Claims (2, 3, 4, 5)
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Specification