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    • 3. 发明授权
    • Transmitting/receiving apparatus and method for packet retransmission in a mobile communication system
    • 用于移动通信系统中的分组重发的发送/接收装置和方法
    • US07362733B2
    • 2008-04-22
    • US10281719
    • 2002-10-28
    • Noh-Sun KimGin-Kyu ChoiYong-Suk MoonHun-Kee KimJae-Seung Yoon
    • Noh-Sun KimGin-Kyu ChoiYong-Suk MoonHun-Kee KimJae-Seung Yoon
    • H04B7/216
    • H04L1/0066H04L1/0003H04L1/0069H04L1/1819H04L1/1887H04L1/1893
    • A transmitting/receiving apparatus and method for packet retransmission in a mobile communication system. Upon request for a retransmission from a receiver, a transmitter generates first coded bits by inverting initially transmitted coded bits, generates second coded bits by separating the initially transmitted coded bits into a first bit group having a relatively high priority and a second bit group having a relatively low priority and exchanging the first bit group with the second bit group, and generates third coded bits by inverting the exchanged coded bits. The transmitter selects one of the first coded bits, the second coded bits according to the sequence number of a retransmission request received from the receiver, and the third coded bits and maps the selected coded bits to modulation symbols. The transmitter then transmits the modulation symbols to the receiver.
    • 一种用于移动通信系统中的分组重发的发送/接收装置和方法。 当从接收机请求重传时,发射机通过反转最初发送的编码比特来产生第一编码比特,通过将最初发送的编码比特分离成具有较高优先级的第一比特组,并产生第二编码比特,产生第二编码比特 相对较低的优先级并且与第二比特组交换第一比特组,并且通过反转交换的编码比特来生成第三编码比特。 发射机根据从接收机接收的重传请求的序列号和第三编码比特选择第一编码比特中的第一编码比特,并将所选择的编码比特映射到调制符号。 然后,发射机将调制符号发送到接收机。
    • 8. 发明授权
    • Apparatus and method for performing adaptive channel estimation in a mobile communication system
    • 一种用于在移动通信系统中执行自适应信道估计的装置和方法
    • US07376210B2
    • 2008-05-20
    • US10614078
    • 2003-07-08
    • Hun-Kee KimGin-Kyu CholYong-Suk MoonNoh-Sun Kim
    • Hun-Kee KimGin-Kyu CholYong-Suk MoonNoh-Sun Kim
    • H04B1/10
    • H04L25/021H04L25/0202H04L25/0206H04L25/0208
    • Disclosed is an adaptive channel estimator for improving a performance of a general channel estimator in a mobile communication system, and a method for controlling the same. The adaptive channel estimator further detects a noise level of a channel and a channel speed, and implements an optimum noise elimination filter on the basis of the detected noise level and channel speed. A comparison between mapping degrees predetermined by the detected noise level and channel speed allows an optimum noise elimination filter to be implemented, If such a channel estimator is implemented, then optimum packet data transmission is available for not only a low-speed channel but also a high-speed channel. A channel compensation caused by a difference between a spreading factor (SF) of a pilot channel and a spreading factor (SF) of a data channel can be compensated on the condition that a slope compensator executed by a SF ratio is controlled by a filter coefficient controller.
    • 公开了一种用于改善移动通信系统中的通用信道估计器的性能的自适应信道估计器及其控制方法。 自适应信道估计器还检测信道的噪声电平和信道速度,并且基于检测到的噪声电平和信道速度来实现最佳噪声消除滤波器。 通过检测到的噪声电平和通道速度预定的映射度之间的比较允许实现最佳噪声消除滤波器。如果实现了这种信道估计器,则最佳分组数据传输不仅可用于低速信道,而且可用于低速信道 高速通道。 由导频信道的扩展因子(SF)与数据信道的扩展因子(SF)之间的差导致的信道补偿可以在由SF比执行的斜率补偿器由滤波器系数 控制器。