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    Receiver for mobile communications systems with equalisation and differential detection
    2.
    发明公开
    Receiver for mobile communications systems with equalisation and differential detection 失效
    移动通信系统公司Enfassung

    公开(公告)号：EP0802657A2

    公开(公告)日：1997-10-22

    申请号：EP97105566.0

    申请日：1997-04-03

    申请人： MATSUSHITA COMMUNICATION INDUSTRIAL CO., LTD. ,  NTT MOBILE COMMUNICATIONS NETWORK INC.

    发明人： Futagi, Sadaki ,  Uesugi, Mitsuru ,  Suzuki, Hiroshi ,  Yoshino, Hitoshi

    IPC分类号： H04L27/22 ,  H04L25/03

    CPC分类号： H04L27/22 ,  H04L25/03057

    摘要： An equalizer block (2, 34, 52, 74) forming part of a receiver compensates transmission path characteristics of a baseband received signal to generate a prediction signal (10, 35, 53,75), and differential-logic-converts a demodulated signal generated by demodulating the prediction signal to generate a differential-logic-conversion demodulated signal (13a, 37a, 55a, 77a). A differential-detection demodulator block (9, 36, 54, 76) differential-detects the prediction signal from the equalizer block and subsequently demodulates the differential-detected prediction signal to generate a differential-detection demodulated signal (13b, 37b, 55b, 77b). A selector block (12, 27, 38, 38A, 59, 78) selects either the differential-logic-conversion demodulated signal from the equalizer block or the differential-detection demodulated signal from the difference-detection demodulator block.

    摘要翻译： 形成接收部分的均衡器块（2,34,52,74）补偿基带接收信号的传输路径特性，以产生预测信号（10,35,55,75），并对解调信号进行差分逻辑转换 通过解调预测信号产生差分逻辑转换解调信号（13a，37a，55a，77a）。 差分检测解调器块（9,36,54,76）对来自均衡器块的预测信号进行差分检测，并随后对差分检测的预测信号进行解调，生成差分检测解调信号（13b，37b，55b，77b ）。 选择器块（12,27,38,38A，59,78）选择来自均衡器块的差分逻辑转换解调信号或来自差分检测解调器块的差分检测解调信号。

    Frequency diversity transmitter and receiver
    5.
    发明公开
    Frequency diversity transmitter and receiver 失效
    频率分集发射器和接收器。

    公开(公告)号：EP0599500A2

    公开(公告)日：1994-06-01

    申请号：EP93308729.8

    申请日：1993-11-01

    申请人： NTT MOBILE COMMUNICATIONS NETWORK INC.

    发明人： Tomisato, Shigeru ,  Suzuki, Hiroshi

    IPC分类号： H04B7/12

    CPC分类号： H04L27/2601

    摘要： A frequency diversity transmitting and receiving system comprising a transmitter (1) which transmits after splitting each symbol of an input symbol sequence into a plural number K of chips and then modulates these with mutually differing carrier frequencies, and a receiver (2) which receives the transmitted signals from the transmitter and demodulates them with local frequencies which respectively correspond to the aforementioned K types of carrier frequency. A carrier frequency generator (13,14) generates, as the aforementioned carrier frequencies for the aforementioned K chips, K types of signal with preset initial phase, and a local frequency generator (22,23) generates, as the aforementioned local frequencies for the carrier frequencies, signals which are substantially in phase with the initial phase of the carrier.

    Receiver for mobile communications systems with equalisation and differential detection
    7.
    发明公开
    Receiver for mobile communications systems with equalisation and differential detection 失效
    接收器，用于与均衡和差动进制的移动通信系统

    公开(公告)号：EP0802657A3

    公开(公告)日：2000-11-22

    申请号：EP97105566.0

    申请日：1997-04-03

    申请人： MATSUSHITA COMMUNICATION INDUSTRIAL CO., LTD. ,  NTT MOBILE COMMUNICATIONS NETWORK INC.

    发明人： Futagi, Sadaki ,  Uesugi, Mitsuru ,  Suzuki, Hiroshi ,  Yoshino, Hitoshi

    IPC分类号： H04L27/22 ,  H04L25/03

    CPC分类号： H04L27/22 ,  H04L25/03057

    摘要： An equalizer block (2, 34, 52, 74) forming part of a receiver compensates transmission path characteristics of a baseband received signal to generate a prediction signal (10, 35, 53,75), and differential-logic-converts a demodulated signal generated by demodulating the prediction signal to generate a differential-logic-conversion demodulated signal (13a, 37a, 55a, 77a). A differential-detection demodulator block (9, 36, 54, 76) differential-detects the prediction signal from the equalizer block and subsequently demodulates the differential-detected prediction signal to generate a differential-detection demodulated signal (13b, 37b, 55b, 77b). A selector block (12, 27, 38, 38A, 59, 78) selects either the differential-logic-conversion demodulated signal from the equalizer block or the differential-detection demodulated signal from the difference-detection demodulator block.

    Quadrature amplitude modulator with distortion compensation
    8.
    发明公开
    Quadrature amplitude modulator with distortion compensation 失效
    Quadraturamplitudenmodulator mit Verzerrungskompensation。

    公开(公告)号：EP0503588A2

    公开(公告)日：1992-09-16

    申请号：EP92104166.1

    申请日：1992-03-11

    申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION ,  NTT MOBILE COMMUNICATIONS NETWORK INC.

    发明人： Suzuki, Hiroshi

    IPC分类号： H04L27/36

    CPC分类号： H04L27/364

    摘要： A quadrature amplitude modulator is described, which is capable of accurately compensating for linear distortions occurring during the modulation process.
    The modulator includes a signal level detector (3) whose output is connected to a parameter generation unit (4), which determines the particular linear transformation to be applied to the I and Q baseband signals. The parameters of the linear transformation are calculated in the following order: DC offset, amplitude balance, and quadrature error. Each correction parameter is calculated in such a way as not to interfere with the correction due to a the previously calculated parameters.

    摘要翻译： 一种正交幅度调制器，能够通过简单的配置完全准确地补偿线性失真。 调制器包括用于产生用于调制波的电平信号的电平信号生成单元（3），以及用于确定要应用于同相和正交的线性变换的线性变换参数的适当值的参数生成单元（4） 幅度输入信号根据电平信号。 在这种调制器中，线性变换参数按照先前确定的DC偏移的线性变换参数的顺序依次确定，然后确定用于振幅平衡的线性变换参数，同时补偿由于DC关闭引起的失真 确定正交相位关系的线性变换参数，同时补偿由于DC偏移和幅度平衡引起的失真。