Invention Grant
- Patent Title: Method and system for clipping a baseband input signal
- Patent Title (中): 用于削波基带输入信号的方法和系统
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Application No.: US11502446Application Date: 2006-08-11
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Publication No.: US08150324B2Publication Date: 2012-04-03
- Inventor: Bjoern Jelonnek , Gunter Wolff
- Applicant: Bjoern Jelonnek , Gunter Wolff
- Applicant Address: DE Munich
- Assignee: Nokia Siemens Networks GmbH & Co. KG
- Current Assignee: Nokia Siemens Networks GmbH & Co. KG
- Current Assignee Address: DE Munich
- Agency: Staas & Halsey LLP
- Priority: DE102005038122 20050811
- Main IPC: H04B1/00
- IPC: H04B1/00

Abstract:
A method for clipping a baseband input signal filters the complex baseband input signal with a function H1 for forming a filtered first signal. To form a clipped signal in the baseband the filtered first signal is multiplied by a scaling factor. By a signal analysis of the filtered first signal signal overshoots are predicted from which the scaling factor is determined for the baseband clipping. The filter function H1 is calculated as the quotient from a frequency response HS of a transmission filter used one the one hand and from an error frequency response HF on the other hand, with the error frequency response HF being determined in such a way that the error spectrally shaped with HF, which arises for the limitation of the baseband signal, a frequency-dependent tolerance is not exceeded. Subsequently the clipped signal is filtered with the error frequency response HF for forming a filtered second signal.
Public/Granted literature
- US20070036251A1 Method and system for clipping a baseband input signal Public/Granted day:2007-02-15
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