System and method for encypting spread spectrum carrier
First Claim
Patent Images
1. A method for secure wireless communication using spread spectrum principles, comprising:
- generating at least one pseudorandom number (PN) sequence;
generating at least one encryption sequence based on at least one of key and time-varying input;
combining the PN sequence with said encryption sequence to render an encrypted PN sequence; and
using the encrypted PN sequence to spread a communication signal.
2 Assignments
0 Petitions
Accused Products
Abstract
A system and method for encrypting all channels of a wireless spread spectrum communication at the chip level. The PN sequence is encrypted with one or more encryption sequences and then used to spread the signal.
25 Citations
47 Claims
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1. A method for secure wireless communication using spread spectrum principles, comprising:
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generating at least one pseudorandom number (PN) sequence; generating at least one encryption sequence based on at least one of key and time-varying input; combining the PN sequence with said encryption sequence to render an encrypted PN sequence; and using the encrypted PN sequence to spread a communication signal. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An apparatus for secure wireless communication using spread spectrum principles, comprising:
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means for generating at least one pseudorandom number (PN) sequence; means for generating at least one encryption sequence based on at least one of key and time-varying input; means for combining the PN sequence with said encryption sequence to render an encrypted PN sequence; and means for using the encrypted PN sequence to spread a communication signal. - View Dependent Claims (8, 9, 10, 11, 12)
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13. An apparatus for secure wireless communication using spread spectrum principles, comprising:
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a pseudorandom number (PN) sequence generator configured to generate at least one PN sequence; an encryption sequence generator configured to generate at least one encryption sequence based on at least one of key and time-varying input and further configured to combine the PN sequence with the encryption sequence to render an encrypted PN sequence; and a spreader configured to use the encrypted PN sequence to spread a communication signal. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A processor for secure wireless communication using spread spectrum principles, said processor being configured to:
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generate at least one pseudorandom number (PN) sequence; generate at least one encryption sequence based on at least one of key and time-varying input; combine the PN sequence with said encryption sequence to render an encrypted PN sequence; and use the encrypted PN sequence to spread a communication signal.
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20. A computer-program product for secure wireless communication using spread spectrum principles, comprising:
a computer-readable medium comprising instructions for causing a computer to; generate at least one encryption sequence based on at least one of key and time-varying input; combine the PN sequence with said encryption sequence to render an encrypted PN sequence; and use the encrypted PN sequence to spread a communication signal.
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21. A method for secure wireless communication using spread spectrum principles comprising:
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generating at least one encryption sequence based on at least one of key and time-varying input; combining a PN sequence with the encryption sequence to render an encrypted PN sequence; and using the encrypted PN sequence to despread a received spread spectrum signal to render a despread signal. - View Dependent Claims (22, 23, 24, 25, 26, 27)
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28. An apparatus for secure wireless communication using spread spectrum principles comprising:
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an encryption sequence generator configured to generate at least one encryption sequence based on at least one of key and time-varying input; a PN sequence generator configured to combine a PN sequence with the encryption sequence to render an encrypted PN sequence; and a despreader configured to use the encrypted PN sequence to despread a received spread spectrum signal to render a despread signal. - View Dependent Claims (29, 30, 31, 32, 33, 34)
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35. An apparatus for secure wireless communication using spread spectrum principles comprising:
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means for generating at least one encryption sequence based on at least one of key and time-varying input; means for combining a PN sequence with the encryption sequence to render an encrypted PN sequence; and means for using the encrypted PN sequence to despread a received spread spectrum signal to render a despread signal. - View Dependent Claims (36, 37, 38, 39, 40, 41)
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42. A processor for secure wireless communication using spread spectrum principles, said processor being configured to:
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generate at least one encryption sequence based on at least one of key and time-varying input; combine a PN sequence with the encryption sequence to render an encrypted PN sequence; and use the encrypted PN sequence to despread a received spread spectrum signal to render a despread signal.
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43. A computer-program product for secure wireless communication using spread spectrum principles comprising:
a computer-readable medium comprising instructions for causing a computer to; generate at least one encryption sequence based on at least one of key and time-varying input; combine a PN sequence with the encryption sequence to render an encrypted PN sequence; and use the encrypted PN sequence to despread a received spread spectrum signal to render a despread signal.
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44. A base station for secure wireless communication using spread spectrum principles, comprising:
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an antenna; a pseudorandom number (PN) sequence generator configured to generate at least one PN sequence; an encryption sequence generator configured to generate at least one encryption sequence based on at least one of key and time-varying input and further configured to combine the PN sequence with the encryption sequence to render an encrypted PN sequence; and a spreader configured to use the encrypted PN sequence to spread a communication signal transmitted over the antenna.
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45. A user terminal for secure wireless communication using spread spectrum principles, comprising:
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an antenna; a pseudorandom number (PN) sequence generator configured to generate at least one PN sequence; an encryption sequence generator configured to generate at least one encryption sequence based on at least one of key and time-varying input and further configured to combine the PN sequence with the encryption sequence to render an encrypted PN sequence; and a spreader configured to use the encrypted PN sequence to spread a communication signal transmitted over the antenna.
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46. A base station for secure wireless communication using spread spectrum principles comprising:
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an antenna; an encryption sequence generator configured to generate at least one encryption sequence based on at least one of key and time-varying input; a PN sequence generator configured to combine a PN sequence with the encryption sequence to render an encrypted PN sequence; and a despreader configured to use the encrypted PN sequence to despread a spread spectrum signal received using the antenna to render a despread signal.
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47. A user terminal for secure wireless communication using spread spectrum principles comprising:
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an antenna; an encryption sequence generator configured to generate at least one encryption sequence based on at least one of key and time-varying input; a PN sequence generator configured to combine a PN sequence with the encryption sequence to render an encrypted PN sequence; and a despreader configured to use the encrypted PN sequence to despread a spread spectrum signal received using the antenna to render a despread signal.
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Specification