Method and device for processing a digital data signal in a CDMA radio transmitter
AssigneeInfineon Technologies AG
InventorsMarkus Dotsch, Peter Jung, Jorg Plechinger, Peter Schmidt, Michael Schneider, Tideya Kella
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Abstract
A digital data signal to be transmitted is split into a number of subsidiary data signals by a data signal splitting device and is output by a timeslot data output device in a particular timeslot of a TDMA frame made up of a plurality of timeslots. A channeling device is used to impress a CDMA code onto each subsidiary data signal which is output in the particular timeslot. A device for processing a digital data signal in a CDMA mobile radio transmitter is also provided.
Claims10
A method of processing a digital data signal in a CDMA mobile radio transmitter, the method which comprises:
- splitting a data signal to be transmitted into a given number M of subsidiary data signals by using a data signal splitting device, M being an integer number having a value of at least 2;
- outputting the subsidiary data signals in a given timeslot of a TDMA frame made up of a plurality of timeslots by using a timeslot data output device;
- impressing a CDMA code onto each of the subsidiary data signals output in the given timeslot of the TDMA frame by using a channeling device;
- and
- transmitting at least two of the M subsidiary data signals in different frequency ranges by multiplying a narrowband frequency shift sequence onto at least one of the M subsidiary data signals.
In a CDMA mobile radio transmitter, a device for processing a digital data signal, comprising:
- a data signal splitting device for splitting a data signal to be transmitted into a given number M of subsidiary data signals, M being an integer number having a value of at least 2;
- a timeslot data output device operatively connected to said data signal splitting device, said timeslot data output device outputting the subsidiary data signals in a given one of a plurality of timeslots of a TDMA frame;
- and
- a channeling device operatively connected to said timeslot data output device, said channeling device including a first set of multipliers and a second set of multipliers, said first set of multipliers multiplying a CDMA code onto each of the subsidiary data signals output in the given one of the plurality of timeslots, said second set of multipliers multiplying a narrowband frequency shift sequence onto at least one of the subsidiary data signals.
Dependencies are inferred from the claim text.