Spread spectrum spectral density techniques
First Claim
Patent Images
1. A method, comprising the steps ofreceiving a plurality of data bits;
- generating a pseudo-random chip sequence and an inverse of said pseudo-random chip sequence;
pseudo-randomly selecting one of said pseudo-random chip sequence and its inverse, and generating a signal in response thereto;
modulating each one of said plurality of data bits with said signal.
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Abstract
A spread-spectrum communication system in which the energy output is more smoothly distributed than the length of the pseudo-random code would otherwise indicate. A spread-spectrum communication system in which the code sequence is pseudo-randomly inverted on data-bit boundaries, so that the code sequence appears longer, for energy spreading, than it otherwise would appear.
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Citations
1 Claim
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1. A method, comprising the steps of
receiving a plurality of data bits; -
generating a pseudo-random chip sequence and an inverse of said pseudo-random chip sequence; pseudo-randomly selecting one of said pseudo-random chip sequence and its inverse, and generating a signal in response thereto; modulating each one of said plurality of data bits with said signal.
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Specification
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- Resources
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Current AssigneeIntel Corporation
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Original AssigneeOmnipoint Corp. (Deutsche Telekom AG)
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InventorsDixon, Robert C., Bullock, Scott R.
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Primary Examiner(s)Chin, Wellington
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Assistant Examiner(s)LOOMIS, PAUL A
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Application NumberUS08/506,207Time in Patent Office575 DaysField of Search375/206, 375/200, 380/46, 380/34US Class Current375/146CPC Class CodesH04B 1/707 using direct sequence modul...H04J 13/102 Combining codes
