Invention Grant
- Patent Title: Methods and apparatus for reduction of a peak to average ratio for an OFDM transmit signal
- Patent Title (中): 降低OFDM发射信号的峰均比的方法和装置
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Application No.: US11519256Application Date: 2006-09-11
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Publication No.: US07991040B2Publication Date: 2011-08-02
- Inventor: Durk L. van Veen , Fuyun Ling , Raghuraman Krishnamoorthi
- Applicant: Durk L. van Veen , Fuyun Ling , Raghuraman Krishnamoorthi
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agent Ryan Farr
- Main IPC: H04B1/00
- IPC: H04B1/00

Abstract:
Methods and apparatus for reduction of a peak to average ratio for an OFDM transmit signal. In an aspect, a method is provided for reducing a peak to average ratio of a transmit waveform. The method includes obtaining a primary scrambler sequence, generating a secondary scrambler sequence having a length characteristic based on data to be scrambled, and combining the primary and secondary scrambler sequences to produce a PAR reduction sequence. In another aspect, an apparatus is provided for reducing a peak to average ratio of a transmit waveform. The apparatus includes a secondary generator configured to generate a secondary scrambler sequence having a length characteristic based on data to be scrambled, and combining logic configured to combine a primary scrambler sequence and the secondary scrambler sequences to produce a PAR reduction sequence.
Public/Granted literature
- US20070230596A1 Methods and apparatus for reduction of a peak to average ratio for an OFDM transmit signal Public/Granted day:2007-10-04
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