发明名称 |
CARRIER BASED BACKWARDS COMPATIBLE DATA NETWORKING TRANSMITTER, RECEIVER, AND SIGNAL FORMAT |
摘要 |
New version packet data devices support a backwards-compatible signal format. New version devices operate within a first frequency band while old version devices operate within a second frequency band. The first frequency band differs from but overlaps with the second frequency band. The new version devices may operate on a first carrier frequency (within the first frequency band) while old version devices may operate at a second carrier frequency (within the second frequency band). The new version devices and/or the old version devices may also support carrier-less modulations. Preamble, header, and trailer portions of a new version signal include a plurality of spectral copies of a baseband modulated signal. One or more of these spectral copies of the baseband modulated signal is/are indistinguishable from corresponding components of an old version signal. The payload of the new version signal may be formed in the same manner or may be formed in have a wider bandwidth, higher data rate format.
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申请公布号 |
US2008013660(A1) |
申请公布日期 |
2008.01.17 |
申请号 |
US20070774559 |
申请日期 |
2007.07.07 |
申请人 |
BROADCOM CORPORATION, A CALIFORNIA CORPORATION |
发明人 |
OJARD ERIC J.;TRACHEWSKY JASON |
分类号 |
H04L7/00;H04B1/00;H04L1/04;H04L1/08;H04L5/06;H04L12/28;H04L27/00;H04L27/28;H04L27/32 |
主分类号 |
H04L7/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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