Spread spectrum communications using a reference and a message signal system and method
First Claim
Patent Images
1. A spread spectrum communication system comprising:
- means for producing a reference signal;
means for producing a message signal having message data;
means for combining the reference signal and the message signal as a combined signal;
means for transmitting the combined signal as a combined spread spectrum signal;
means for receiving the combined spread spectrum signal;
means for detecting the reference signal within the received combined spread spectrum signal; and
means for recovering the message data using the detected reference signal.
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Abstract
A spread spectrum communication system produces a reference signal. A message signal is produced compromising message data. The reference signal and the message signal is combined as a combined signal. The combined signal is transmitted as a combined spread spectrum signal. The combine spread spectrum signal is received. The reference signal is detected within the received combined spread spectrum signal. The message data is recovered using the detected reference signal.
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Citations
14 Claims
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1. A spread spectrum communication system comprising:
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means for producing a reference signal;
means for producing a message signal having message data;
means for combining the reference signal and the message signal as a combined signal;
means for transmitting the combined signal as a combined spread spectrum signal;
means for receiving the combined spread spectrum signal;
means for detecting the reference signal within the received combined spread spectrum signal; and
means for recovering the message data using the detected reference signal. - View Dependent Claims (2, 3, 4)
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5. A method for use in a spread spectrum communication system, the method comprising:
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producing a reference signal;
producing a message signal having message data;
combining the reference signal and the message signal as a combined signal;
transmitting the combined signal as a combined spread spectrum signal;
receiving the combined spread spectrum signal;
detecting the reference signal within the received combined spread spectrum signal; and
recovering the message data using the detected reference signal. - View Dependent Claims (6, 7, 8)
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9. A spread spectrum communication system comprising:
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means for producing a reference signal;
means for producing a message signal having message data;
means for combining the reference signal and the message signal as a combined signal;
means for transmitting the combined signal as a combined spread spectrum signal;
means for receiving a carrier signal of the combined signal using the reference signal; and
means for recovering the message data using the recovered carrier signal. - View Dependent Claims (10, 11, 13, 14)
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12. A method for use in a spread spectrum communication system, the method comprising:
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producing a reference signal;
producing a message signal having message data;
combining the reference signal and the message signal as a combined signal;
transmitting the combined signal as a combined spread spectrum signal;
receiving the combined spread spectrum signal;
recovering a carrier signal of the combined spread spectrum signal using the reference signal; and
recovering the message data using the recovered carrier signal.
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Specification