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    Dual mode satellite very small aperture terminal apparatus and controlling method thereof
    1.
    发明授权
    Dual mode satellite very small aperture terminal apparatus and controlling method thereof 有权
    双模卫星非常小孔径终端设备及其控制方法

    公开(公告)号：US08559871B2

    公开(公告)日：2013-10-15

    申请号：US12973517

    申请日：2010-12-20

    申请人： Pan Soo Kim ,  Jae Hee Han ,  Dae Ig Chang ,  Ho Jin Lee

    发明人： Pan Soo Kim ,  Jae Hee Han ,  Dae Ig Chang ,  Ho Jin Lee

    IPC分类号： H04B7/185

    CPC分类号： H04B7/18528

    摘要： Provided are a satellite VSAT apparatus and a control method thereof. The satellite VSAT apparatus according to an exemplary embodiment of the present invention can switch a modulation type of a signal to be transmitted from an indoor unit (IDU) to the outdoor unit to a linear or non-linear type in a case in which outputting of a transmitted signal is not controlled to an outdoor unit due to limitations, that is, there is no function such as an automatic signal level control in a block up-converter (BUC), a case in which transmission output limitation is large due to a lot of interference requirements for an adjacent channel, a case in which the number of adjacent channels (carriers) is large, or a case in which adjacent channel interference is large due to a frequency in a satellite multi-beam environment and polarization reuse, in a satellite VSAT apparatus system which aims at a low-priced user terminal.

    摘要翻译： 提供了一种卫星VSAT装置及其控制方法。 在根据本发明的示例性实施例的卫星VSAT装置可以将输出从室内单元（IDU）到室外单元的信号的调制类型切换到线性或非线性类型， 发送信号由于限制而不被控制到室外机，也就是说，在块升压转换器（BUC）中不存在诸如自动信号电平控制的功能，由于发送信号的发送输出限制大 相邻信道的大量干扰要求，相邻信道（载波）数量大的情况，或由于卫星多波束环境中的频率和极化重用而导致相邻信道干扰较大的情况，在 卫星VSAT装置系统，其目的在于低价格的用户终端。

    DUAL MODE SATELLITE VERY SMALL APERTURE TERMINAL APPARATUS AND CONTROLLING METHOD THEREOF
    2.
    发明申请
    DUAL MODE SATELLITE VERY SMALL APERTURE TERMINAL APPARATUS AND CONTROLLING METHOD THEREOF 有权
    双模卫星非常小的终端设备及其控制方法

    公开(公告)号：US20110151777A1

    公开(公告)日：2011-06-23

    申请号：US12973517

    申请日：2010-12-20

    申请人： Pan Soo KIM ,  Jae Hee Han ,  Dae Ig Chang ,  Ho Jin Lee

    发明人： Pan Soo KIM ,  Jae Hee Han ,  Dae Ig Chang ,  Ho Jin Lee

    IPC分类号： H04B7/185 ,  H04W52/04

    CPC分类号： H04B7/18528

    摘要： Provided are a satellite VSAT apparatus and a control method thereof. The satellite VSAT apparatus according to an exemplary embodiment of the present invention can switch a modulation type of a signal to be transmitted from an indoor unit (IDU) to the outdoor unit to a linear or non-linear type in a case in which outputting of a transmitted signal is not controlled to an outdoor unit due to limitations, that is, there is no function such as an automatic signal level control in a block up-converter (BUC), a case in which transmission output limitation is large due to a lot of interference requirements for an adjacent channel, a case in which the number of adjacent channels (carriers) is large, or a case in which adjacent channel interference is large due to a frequency in a satellite multi-beam environment and polarization reuse, in a satellite VSAT apparatus system which aims at a low-priced user terminal.

    摘要翻译： 提供了一种卫星VSAT装置及其控制方法。 在根据本发明的示例性实施例的卫星VSAT装置可以将输出从室内单元（IDU）到室外单元的信号的调制类型切换到线性或非线性类型， 发送信号由于限制而不被控制到室外机，也就是说，在块升压转换器（BUC）中不存在诸如自动信号电平控制的功能，由于发送信号的发送输出限制大 相邻信道的大量干扰要求，相邻信道（载波）数量大的情况，或由于卫星多波束环境中的频率和极化重用而导致相邻信道干扰较大的情况，在 卫星VSAT装置系统，其目的在于低价格的用户终端。

    SOFT-DECISION DEMAPPING METHOD FOR DIGITAL SIGNAL
    3.
    发明申请
    SOFT-DECISION DEMAPPING METHOD FOR DIGITAL SIGNAL 审中-公开
    数字信号的软决策解决方法

    公开(公告)号：US20110150143A1

    公开(公告)日：2011-06-23

    申请号：US12915449

    申请日：2010-10-29

    申请人： Jae Hee Han ,  Pan Soo Kim ,  Dae Ig Chang ,  Jang Woong Park ,  Myung Hoon Sunwoo

    发明人： Jae Hee Han ,  Pan Soo Kim ,  Dae Ig Chang ,  Jang Woong Park ,  Myung Hoon Sunwoo

    IPC分类号： H04L27/22

    CPC分类号： H04L25/067 ,  H04L27/38

    摘要： Disclosed is a demapping method of a soft-decision of an efficient soft determining scheme which is applicable to a DVB-2 satellite communication system. The soft-decision demapping method for a digital signal received through a transmission channel in a communication system using a phase shift keying (PSK) scheme includes: selecting reference symbols in an area having a higher probability than a predetermined probability that the received signal will be positioned among all reference symbols on a constellation diagram using a most significant bit (MSB) value of the received signal; and acquiring a maximum value of a log likelihood ratio (LLR) for the selected reference symbols.

    摘要翻译： 公开了一种适用于DVB-2卫星通信系统的有效软确定方案的软判决的解映射方法。 在使用相移键控（PSK）方式的通信系统中通过传输信道接收的数字信号的软判决解映射方法包括：在具有比接收信号将要的预定概率更高的概率的区域中选择参考符号 使用接收信号的最高有效位（MSB）值在星座图上位于所有参考符号之间; 并获取所选参考符号的对数似然比（LLR）的最大值。