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System and method for variably inserting training symbols into transmissions by estimating the channel coherence time in a wireless communication network

  • US 7,620,076 B2
  • Filed: 08/23/2005
  • Issued: 11/17/2009
  • Est. Priority Date: 08/23/2005
  • Status: Active Grant
First Claim
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1. A method for controlling the quantity of training symbols in a transmission sequence sent by a terminal in a wireless network, wherein the transmission sequence comprises training symbols and data symbols, the method comprising:

  • determining the number of data symbol errors which are at a first distance from training symbols in the transmission sequence;

    determining the number of data symbol errors which are at a second distance from training symbols in the transmission sequence, the second distance being greater than the first distance; and

    adjusting the quantity of training symbols in the transmission sequence based on a result of a comparison of the ratio of the number of data symbol errors which are at the first distance from the training symbols to the number of data symbol errors which are at the second distance from the training symbols.

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