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Spread-spectrum multiplexed transmission system

  • US 5,063,560 A
  • Filed: 08/04/1988
  • Issued: 11/05/1991
  • Est. Priority Date: 02/04/1986
  • Status: Expired due to Term
First Claim
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1. A multi-channel spread-spectrum transmission system, wherein a plurality of spread-spectrum signals are frequency division multiplexed to provide multiple transmission channels, comprising:

  • a plurality of transmitters each for transmitting a signal having a plurality of spaced spectral lines or bands produced by modulating a carrier with a pseudo-noise code, such that the transmitted signal of each channel has an information bandwidth which is significantly less than its spectral line or band spacing and the spread-spectrum signals each have centre frequencies which are spaced, respectively, by frequency increments selected to cause the spectral lines or bands of the respective transmitted signals to be interleaved, the selected frequency increments being less than the transmitter bandwidth of each signal.

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