发明名称 |
Quasi-parallel multichannel receivers for wideband orthogonal frequency division multiplexed communications and associated methods |
摘要 |
A quasi-parallel receiver may simultaneously receive signals within several subchannels that comprise a wideband channel. The receiver includes a subchannel filter selection switch that provides a baseband signal to a selected one of a plurality of subchannel low-pass filters. A heterodyne frequency generator provides one of a plurality of heterodyne frequencies to convert an RF signal received within a selected subchannel to the baseband signal. The subchannel low-pass filters accumulate signal information from an associated one of a plurality of subchannels during a filter-input sampling interval. In some embodiments, individual analog-to-digital converters receive the accumulated signal outputs from an associated subchannel filter and generate digital signals for a subsequent Fourier transformation. In some embodiments, a normalized signal output may be provided to the analog-to-digital converters, allowing the use of lower resolution analog-to-digital converters. The analog-to-digital converters may have sampling rates based on the subchannel bandwidth. |
申请公布号 |
US7885178(B2) |
申请公布日期 |
2011.02.08 |
申请号 |
US20030749902 |
申请日期 |
2003.12.29 |
申请人 |
INTEL CORPORATION |
发明人 |
MALTSEV ALEXANDER A.;SADRI ALI S.;SERGEYEV SERGEY E.;BELONOZHKIN ALEXANDER N.;SERGEYEV VADIM S. |
分类号 |
H04J11/00;H04B1/40;H04L27/26 |
主分类号 |
H04J11/00 |
代理机构 |
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