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公开(公告)号：IE921372A1
公开(公告)日：1992-11-04
申请号：IE921372
申请日：1992-07-01
Applicant: QUALCOMM INC
Inventor： WOLF JACK KEIL
Abstract: A codec for resolving transmission phase ambiguities in the M-ary PSK modulation of trellis coded data. A trellis encoder uses a differential encoder and a convolutional encoder, along with multiplexed differential encoders, to generate from sets of input data bits corresponding phase point values for use in M-ary PSK carrier modulation. A trellis decoder uses a Viterbi decoder and a differential decoder, along with multiplexed differential decoders, to produce estimates of the original input data bits from the received signal sector value.
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22.发明申请METHOD AND APPARATUS FOR RESOLVING PHASE AMBIGUITIES IN TRELLIS CODED MODULATED DATA 审中-公开用于解决TRELLIS编码调制数据中相位优化的方法和装置
公开(公告)号：WO9220162A3
公开(公告)日：1993-01-07
申请号：PCT/US9203656
申请日：1992-05-01
Applicant: QUALCOMM INC
Inventor： WOLF JACK KEIL
CPC classification number: H03M13/256 , H03M13/25 , H03M13/41 , H04L27/186
Abstract: A codec for resolving transmission phase ambiguities in the M-ary PSK modulation of trellis coded data. A trellis encoder (10) uses a differential encoder (22) and a convolutional encoder (24), along with multiplexed differential encoders (18, 20), to generate from sets of input data bits corresponding phase point values for use in M-ary PSK carrier modulation (12). A trellis decoder (32) uses a Viterbi decoder (40) and a differential decoder (50), along with multiplexed differential decoders (46, 48), to produce estimates of the original input data bits from the received signal sector value.
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