发明名称 |
Method and means for generating and detecting spectrally constrained coded partial response waveforms using a time varying trellis modified by selective output state splitting |
摘要 |
A method and means for detecting spectral null sequences of a spectrally-constrained code at the output of a noisy communications channel by tracking the spectral content of said sequences with a Viterbi detector using an N stage trellis and mapping each spectral null sequence to a unique path of acyclic successive states and edges through said trellis by selectively outsplitting counterpart states at preselected times modulo N in said trellis such that no pair of unique paths support the same spectral null sequence.
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申请公布号 |
US5548600(A) |
申请公布日期 |
1996.08.20 |
申请号 |
US19940316597 |
申请日期 |
1994.09.29 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
FREDRICKSON, LISA;KARABED, RAZMIK;SIEGEL, PAUL H.;THAPAR, HEMANT K. |
分类号 |
H03M13/31;H03M13/41;H04L25/497;(IPC1-7):G06F11/10;H03M13/12 |
主分类号 |
H03M13/31 |
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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