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Wireless communication system

  • US 20070177683A1
  • Filed: 04/27/2005
  • Published: 08/02/2007
  • Est. Priority Date: 04/30/2004
  • Status: Active Grant
First Claim
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1. A modulator applied to a wireless communication system that conducts wireless communication by a multi-carrier modulation level using a communication frame composed of a plurality of slots, comprising:

  • a slot generation part generating said slots by multiplexing header information containing at least channel estimation information for estimating channel, modulation level information for notifying a receiving side of a modulation level of each sub-carrier, and user data; and

    a determination part determining whether or not demodulation information for notifying successful demodulation of said modulation level information has been received from the receiving side, wherein, said slot generation part, when said determination part determines that said demodulation information has been received, generates, after receiving said demodulation information, slots which do not contain said modulation level information in a relevant communication frame.

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