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Communication network using synchronous code division multiplexing method

  • US 7,746,805 B2
  • Filed: 11/30/2006
  • Issued: 06/29/2010
  • Est. Priority Date: 12/02/2005
  • Status: Expired due to Fees
First Claim
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1. A communication network comprising:

  • a plurality of first communication devices, each of which comprises a first transceiver which transmits a spread modulated signal, a first receiver which receives phase control information, and a first controller which controls a phase at which the first transceiver transmits the spread modulated signal, using the phase control information;

    a repeater which generates a code division multiplexed signal by superposing spread modulated signals transmitted respectively by the first communication devices; and

    a second communication device comprising a second receiver which receives and demultiplexes the code division multiplexed signal, a second controller which determines an optimum phase of the spread modulated signal for each of the first communication devices using the demultiplexed signal, and a second transceiver which transmits the optimum phase to the first receiver as the phase control information,wherein the second controller detects a minimum phase and a maximum phase at which the demultiplexed signal is received normally, and determines that a central value between the minimum phase and the maximum phase is the optimum phase.

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