发明名称 |
Single sideband and quadrature multiplexed continuous phase modulation |
摘要 |
A class of bandwidth reduction techniques are used develop a broad class of modulation types collectively called SSB-FM. These signals can be used to construct communication systems that provide bandwidth-normalized performance gains of 10 dB or more when compared to popular prior art modulation methods. An aspect of the invention involves mapping trellis paths in a complex signal space onto corresponding real-valued trellis signals with desirable spectral properties. The invention can be used map continuous phase modulated (CPM) signals onto simpler amplitude-modulated trellis signals having double the channel capacity of prior art CPM signals. Multi-amplitude signaling and frequency division multiplexing may also be incorporated to further accommodate more information per symbol.
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申请公布号 |
US2009279422(A1) |
申请公布日期 |
2009.11.12 |
申请号 |
US20090385468 |
申请日期 |
2009.04.09 |
申请人 |
TRELLIS PHASE COMMUNICATIONS, LP |
发明人 |
FONSEKA JOHN P.;DOWLING ERIC MORGAN |
分类号 |
H04L5/12 |
主分类号 |
H04L5/12 |
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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