发明名称 |
45 DEGREE PHASE AMBIGUITY RESOLUTION FOR 8PSK MODULATION |
摘要 |
A method and apparatus for 45 DEG phase ambiguity resolution for one coded bit per symbol 8PSK modulation resolves phase ambiguity by selection of pre-differential encoders. A treillis encoder for 8PSK modulation of the type in which input data bits are encoded to a three-bit symbols includes a differential encoder, a convolutional encoder and first and second encoding assemblies. A decoder for decoding treillis coded data of 8PSK modulation includes a Viterbi decoder, a differential decoder, a convolutional decoder and first and second decoder assemblies. Each of the encoding and decoding assemblies includes multiplexing logic for selecting from among possible data paths according to a phase invariant scheme.
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申请公布号 |
WO9955009(A1) |
申请公布日期 |
1999.10.28 |
申请号 |
WO1999US08342 |
申请日期 |
1999.04.16 |
申请人 |
TIERNAN COMMUNICATIONS, INC. |
发明人 |
ACHOUR, MAHA |
分类号 |
H03M13/00;H04L27/18;(IPC1-7):H03M13/00 |
主分类号 |
H03M13/00 |
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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