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    • 1. 发明授权
    • Apparatus for adaptive resolution of phase ambiguity value
    • 相位模糊度值自适应解析装置
    • US07177362B2
    • 2007-02-13
    • US10412829
    • 2003-04-14
    • Dae Ig ChangEun A ChoiNae Soo Kim
    • Dae Ig ChangEun A ChoiNae Soo Kim
    • H04L27/00H04L27/10H04B1/00H03D3/18
    • H04L1/0045H04L27/227H04L2027/0067H04L2027/0095
    • An apparatus for resolution of phase ambiguity is disclosed. The apparatus receives a modulated signal and resolves a phase ambiguity of the modulated signal while recovering the modulated signal to original data, wherein the apparatus includes a phase ambiguity detector for receiving demodulated data and frame synchronization information, and detecting a phase ambiguity value from the demodulated data based on a frame synchronization information; a phase ambiguity eliminator for receiving the phase ambiguity value and the demodulated data, and generating a phase ambiguity eliminated data by inverting the phase ambiguity value and multiplying the inverted phase ambiguity value and the demodulated data. The present invention can resolve a phase ambiguity occurred in various modulation modes including a burst mode communication with the same algorithm so it can effectively be implemented to an adaptive MODEM.
    • 公开了一种用于分辨相位模糊的装置。 该装置接收调制信号并解调调制信号的相位模糊度,同时将调制信号恢复到原始数据,其中该装置包括用于接收解调数据和帧同步信息的相位模糊度检测器,以及从解调的信号中检测相位模糊度值 基于帧同步信息的数据; 相位歧义消除器,用于接收相位模糊度值和解调数据,并且通过反相相位模糊度值并将反相位模糊度值与解调数据相乘来产生相位模糊消除数据。 本发明可以解决在包括具有相同算法的突发模式通信的各种调制模式中发生的相位歧义,从而可以有效地实现到自适应MODEM。
    • 2. 发明授权
    • Pragmatic trellis code modulation decoder and a method thereof
    • 实用格码编码调制解码器及其方法
    • US07340002B2
    • 2008-03-04
    • US10719509
    • 2003-11-21
    • Eun A ChoiNae-soo KimDeock Gil OhJi Won Jung
    • Eun A ChoiNae-soo KimDeock Gil OhJi Won Jung
    • H04L5/12H04L23/02
    • H04L1/006H03M13/256H03M13/336H03M13/3776H03M13/41H03M13/6362H04L1/0054H04L27/186H04L27/22
    • A pragmatic trellis code modulation decoder including a demodulator for receiving a modulated signal and computing coordination values of symbols of the modulated signal on an I-axis and Q-axis in a constellation; a coset mapper for generating 3-bit soft decision data based on the computed coordinate values; a viterbi decoder for receiving 3-bit soft decision data and generating 1-bit data as a coded data by decoding the 3-bit soft decision data; a re-encoder for receiving the 1-bit data from the viterbi decoder and obtaining un-coded information in order to compute an un-coded data; a sector phase quantizer for obtaining I channel and Q channel information based on the coordination values from the demodulator in order to obtain un-coded data; a time delayer for delaying output of the sector phase quantizer until the re-encoder outputs the un-coded information; and a non-coded code decoder for computing the un-coded data.
    • 一种实用的格码编码调制解码器,包括:解调器,用于接收调制信号,并在星座中的I轴和Q轴上计算调制信号的符号的协调值; 用于基于所计算的坐标值产生3位软判决数据的陪集映射器; 维特比解码器,用于通过解码3位软判决数据来接收3位软判决数据并生成1位数据作为编码数据; 用于从维特比解码器接收1位数据并获得未编码信息以便计算未编码数据的重新编码器; 用于基于来自解调器的协调值来获得I信道和Q信道信息以获得未编码数据的扇区相位量化器; 用于延迟扇区相位量化器的输出的时间延迟器,直到重新编码器输出未编码的信息; 以及用于计算未编码数据的非编码码解码器。