Invention Grant
- Patent Title: Peak-to-average power reduction using guard tone filtering
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Application No.: US15942614Application Date: 2018-04-02
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Publication No.: US10484224B2Publication Date: 2019-11-19
- Inventor: Jaiganesh Balakrishnan , Sarma Sundareswara Gunturi , Pankaj Gupta , Indu Prathapan
- Applicant: Texas Instruments Incorporated
- Applicant Address: US TX Dallas
- Assignee: TEXAS INSTRUMENTS INCORPORATED
- Current Assignee: TEXAS INSTRUMENTS INCORPORATED
- Current Assignee Address: US TX Dallas
- Agent John R. Pessetto; Charles A. Brill; Frank D. Cimino
- Main IPC: H04L27/26
- IPC: H04L27/26

Abstract:
The disclosure provides a circuit. The circuit includes an IFFT (inverse fast fourier transform) block. The IFFT block generates a modulated signal in response to a data signal. A clip logic block is coupled to the IFFT block, and generates a clipped signal in response to the modulated signal. A first subtractor is coupled to the clip logic block and the IFFT block, and subtracts the modulated signal from the clipped signal to generate an error signal. A cyclic filter is coupled to the first subtractor, and filters the error signal to generate a filtered error signal. A second subtractor is coupled to the cyclic filter and the IFFT block. The second subtractor subtracts the filtered error signal from the modulated signal to generate a processed signal.
Public/Granted literature
- US20180227157A1 PEAK-TO-AVERAGE POWER REDUCTION USING GUARD TONE FILTERING Public/Granted day:2018-08-09
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