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US 2002/0154678 A1Published application
Method and apparatus for producing spread-coded signals
AssigneeInfineon Technologies AG
InventorsMarkus Doetsch, Peter Jung, Jorg Plechinger, Peter Schmidt, Michael Schneider, Tideya Kella
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Abstract
Transmission data that will be transmitted is coded and thus band-spread using a spread code. The band-spread transmission data is also coded using a scrambling code. The scrambling process is followed by pulse shaping, frequency correction, and DC offset and/or amplitude compensation for the band-spread and scrambled transmission data.
Claims29
A method for producing spread-coded signals, which comprises:
- coding and band-spreading transmission data using a spread code to obtain band-spread transmission data;
- coding the band-spread transmission data using a scrambling code to obtain band-spread and scrambled transmission data and then pulse shaping the band-spread and scrambled transmission data;
- subjecting the band-spread and scrambled transmission data to frequency correction;
- and
- in a signal path downstream from the frequency correction, subjecting the band-spread and scrambled transmission data to an operation selected from the group consisting of a DC offset compensation operation and an amplitude compensation operation.
2 more elements
An apparatus for producing spread-coded signals, comprising:
- a spread coding device for coding transmission data using a spread code to obtain spread-coded transmission data, the transmission data being for subsequent transmission;
- a scrambling device for scrambling the spread-coded transmission data with a scrambling code;
- and
- a signal preprocessing device receiving the transmission data from said scrambling device;
- said signal preprocessing device including a device for pulse shaping;
- said signal preprocessing device including a device for frequency correction;
- said signal preprocessing device including a given device for performing an operation selected from the group consisting of a DC offset compensation operation and an amplitude compensation operation;
- said given device being configured downstream from said device for frequency correction.
5 more elements
Dependencies are inferred from the claim text.