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Transmission method and transmission apparatus for transmitting signals on the basis of a OFDM/TDMA-system with pilot symbols

  • US 6,545,997 B1
  • Filed: 02/19/1999
  • Issued: 04/08/2003
  • Est. Priority Date: 02/22/1998
  • Status: Expired due to Fees
First Claim
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1. A transmission apparatus for transmitting signals on the basis of an OFDM/TDMA-system, comprising:

  • allocation means for allocating a plurality of subcarriers being orthogonal to each other to a variable number of channels (U0, U1 . . . U9), each channel containing a variable number of subcarriers depending on information to be transmitted in said signals, wherein said allocation means, for the transmission of said signals in a GSM-system having a constant number of predetermined GSM-frequency-channels and a constant number of predetermined GSM-timeslots being grouped in GSM-frames, allocates a number of said subcarriers corresponding to the bandwidth of said GSM-frequency-channels, so that a multiple of one resulting OFDM/TDMA-timeslot (TS) matches with one or a multiple of one GSM-timeslot, and for allocating a pilot symbol to every n-th subcarrier, n being an integer and n>

    1, and transmission means for transmitting said signals.

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