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Radio based collision detection for wireless communication system

  • US 5,657,326 A
  • Filed: 12/20/1994
  • Issued: 08/12/1997
  • Est. Priority Date: 12/20/1994
  • Status: Expired due to Term
First Claim
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1. An apparatus for a station on a wireless communication channel, which detects collisions between data transmissions in the wireless communication channel, comprising:

  • a detector which detects mixing products of colliding data transmissions at the station; and

    signal processing resources, coupled to the detector, which indicate collisions between data transmissions based upon characteristics of the mixing products, wherein the data transmissions comprise a frequency modulated carrier having a center frequency, a low frequency below the center frequency representing a first data value, and a high frequency above the center frequency representing a second data value, and the signal processing resources are responsive to a mixing product based on a difference between the low frequency and the high frequency.

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