Data transmission method, and transmitter

  • US 5,949,790 A
  • Filed: 12/02/1997
  • Issued: 09/07/1999
  • Est. Priority Date: 04/11/1995
  • Status: Expired due to Fees
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First Claim
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1. A data transmission method in a wireless data transmission system where signals (200, 202, 204) with one or more data rates and quality levels are transmitted simultaneously, characterized in that outer coding (206, 208) is performed for at least some of the signals so that all the signals to be transmitted have a common quality level, and thatsignals thus acquired having the same quality level are combined into frames of a given length, and thatinner coding (220) is performed for the combined signal, and thatsome symbols are repeated or deleted in the frames to be transmitted, if necessary, so that the length of the symbols of each frame is a multifold of a time interval that is known and essentially shorter than the symbol length, and thatthe transmitting power used for transmitting each frame depends on the number of bits each frame had prior to symbol repetition.

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