Patent ID: 6545997
Filing Date: 2003-04-08
Classification: H04L

Abstract:
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.