发明公开
EP2008420A1 METHODS AND APPARATUS FOR REDUCTION OF A PEAK TO AVERAGE RATIO FOR AN OFDM TRANSMIT SIGNAL
审中-公开
法和设备峰值平均比例对于OFDM传输信号还原
- 专利标题： METHODS AND APPARATUS FOR REDUCTION OF A PEAK TO AVERAGE RATIO FOR AN OFDM TRANSMIT SIGNAL
- 专利标题（中）： 法和设备峰值平均比例对于OFDM传输信号还原
-
申请号： EP07760139.1申请日： 2007-04-04
-
公开(公告)号： EP2008420A1公开(公告)日： 2008-12-31
- 发明人: VAN VEEN, Durk L. , LING, Fuyun , KRISHNAMOORTHI, Raghuraman
- 申请人： QUALCOMM Incorporated
- 申请人地址： Attn: International IP Administration 5775 Morehouse Drive San Diego, California 92121 US
- 专利权人： QUALCOMM Incorporated
- 当前专利权人： QUALCOMM Incorporated
- 当前专利权人地址： Attn: International IP Administration 5775 Morehouse Drive San Diego, California 92121 US
- 代理机构： Heselberger, Johannes
- 优先权： US789558P 20060404; US519256 20060911
- 国际公布： WO2007115331 20071011
- 主分类号： H04L27/26
- IPC分类号： H04L27/26
摘要：
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.
信息查询
