会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 22. 发明授权
    • Method and apparatus for determining modulation scheme for retransmission in a communication system
    • 用于确定通信系统中重传的调制方案的方法和装置
    • US07133462B2
    • 2006-11-07
    • US10300476
    • 2002-11-20
    • Sang-Hyuck HaMin-Goo Kim
    • Sang-Hyuck HaMin-Goo Kim
    • H04L27/04H04L27/12H04L27/20H04L27/36H03K7/10H04B7/14H04B1/02
    • H04L1/1867H04L1/0003
    • A method and apparatus for determining an optimum modulation scheme for a retransmission in a communication system supporting HARQ. When two modulation schemes are available, at an initial transmission, information is modulated in the lower-order modulation scheme if a first MPR is less than a first threshold, and in the higher-order modulation scheme if the first MPR is greater than or equal to the first threshold. Here, an MPR is determined by an EP size, the number of available Walsh codes, and the number of slots per sub-packet that are used for a transmission. To select one of the modulation schemes for a retransmission, a second MPR is calculated using an EP size, the number of available Walsh codes, and the number of slots per sub-packet that are used for the retransmission. If the first MPR is equal to or less than a second threshold greater than the first threshold, the lower-order modulation scheme is selected. If the second MPR is greater than the second threshold, the higher-order modulation scheme is selected.
    • 一种在支持HARQ的通信系统中确定用于重传的最佳调制方案的方法和装置。 当两个调制方案可用时,在初始传输时,如果第一MPR小于第一阈值,则在低阶调制方案中调制信息,如果第一MPR大于或等于 到第一个阈值。 这里,MPR由EP大小,可用沃尔什码的数量和用于传输的每个子分组的时隙数确定。 为了选择用于重传的调制方案之一,使用EP大小,可用沃尔什码的数量和用于重传的每个子分组的时隙数来计算第二MPR。 如果第一MPR等于或小于大于第一阈值的第二阈值,则选择低阶调制方案。 如果第二MPR大于第二阈值,则选择较高阶调制方案。
    • 26. 发明申请
    • Automatic gain control apparatus and method in an orthogonal frequency division multiple access sytem
    • 一种正交频分多址系统中的自动增益控制装置及方法
    • US20060176093A1
    • 2006-08-10
    • US11348345
    • 2006-02-07
    • Yong-Chul SongYoung-Mo GuMin-Goo Kim
    • Yong-Chul SongYoung-Mo GuMin-Goo Kim
    • H03K5/02
    • H03G3/3063
    • An automatic gain control (AGC) apparatus of a wireless mobile terminal, and method, in an orthogonal frequency division multiple access (OFDMA) system. A gain amplifier controls an amplification gain of received analog symbols. An analog-to-digital converter converts the received analog symbols into a digital signal. A fast Fourier transform (FFT) unit converts the digital signal into a frequency-domain signal. A power measurer measures power in the frequency domain in units of sub-carriers. A sub-carrier power accumulator detects a sub-carrier carrying a signal, and accumulates its power value. A sub-carrier average power measurer estimates an average power value transmitted per sub-carrier from the accumulated power value. A control means compares the estimated average power value with a reference power value, and generates a control signal used for controlling a gain of the gain amplifier according to the comparison result.
    • 一种在正交频分多址(OFDMA)系统中的无线移动终端的自动增益控制(AGC)装置和方法。 增益放大器控制接收的模拟符号的放大增益。 模数转换器将接收的模拟符号转换为数字信号。 快速傅里叶变换(FFT)单元将数字信号转换成频域信号。 功率测量器以子载波为单位测量频域的功率。 子载波功率累加器检测携带信号的子载波,并累加其功率值。 子载波平均功率测量器估计从累积功率值发送的每个副载波的平均功率值。 控制装置将估计的平均功率值与参考功率值进行比较,并且根据比较结果产生用于控制增益放大器的增益的控制信号。
    • 27. 发明授权
    • Demodulation apparatus and method in a communication system employing 8-ary PSK modulation
    • 采用8进制PSK调制的通信系统中的解调装置和方法
    • US07072426B2
    • 2006-07-04
    • US10218918
    • 2002-08-14
    • Sang-Hyuck HaMin-Goo Kim
    • Sang-Hyuck HaMin-Goo Kim
    • H04L27/22
    • H04L25/067H04L27/22
    • An 8-ary PSK demodulation apparatus for receiving an input signal Rk(Xk, Yk) comprised of a kth quadrature-phase component Yk and a kth in-phase component Xk, and for generating soft decision values Λ(sk,0), Λ(sk,1), and Λ(sk,2) for the input signal Rk(Xk, Yk) by a soft decision means. A calculator calculates Zk by subtracting a level |Yk| of the quadrature-phase signal component Yk from a level |Xk| of the in-phase signal component Xk, and outputs the Zk as a first soft decision value. A first selector selects the Zk or reverse −Zk, according to an MSB of the quadrature-phase signal component Yk. A second selector selects the Zk or the reverse −Zk according to an MSB of the in-phase signal component Xk. A third selector selects an output of the second selector or a value “0” according to an MSB of the Zk. A first adder adds √{square root over (2)}Yk to an output of the third selector, and outputs the result value as a third soft decision value. A fourth selector selects an output of the second selector or a value “0” according to the MSB of the Zk. A second adder adds √{square root over (2)}Xk to an output of the fourth selector, and outputs the result value as a second soft decision value.
    • 一种用于接收包含ak第二个输入信号的输入信号R k(X k,Y k k)的8元PSK解调装置, / SUP>正交相位分量Y k和/或同相分量X k k的同步分量,并且用于产生软判决值λ(s < SUB(k,0),Lambda(s,k,1)和Lambda(s,k,2),用于输入信号R k 通过软判定装置来执行(X&lt; k&gt;,Y&lt; k&gt;)。 一个计算器通过减去一个水平| Y | k N |来计算Z N 的从正交相位信号分量Y N k的正交相位信号分量Y 的同相信号分量X N k,并且将Z N k作为第一软判决值输出。 第一选择器根据正交相位信号分量Y N k的MSB来选择Z 或反向-Z 。 第二选择器根据同相信号分量X SUB的MSB来选择Z SUB或反向-Z SUB k。 第三选择器根据Z 的MSB选择第二选择器的输出或值“0”。 第一加法器将√(平方根)加到第二选择器的输出上,并输出结果值作为第三软判决值,第四选择器选择第二选择器的输出或 第二加法器将第二加法器向第四选择器的输出添加√{平方根(2X> k ),并输出 结果值作为第二软判决值。
    • 28. 发明申请
    • Method and apparatus for decoding low density parity check code using united node processing
    • 使用联合节点处理解码低密度奇偶校验码的方法和装置
    • US20060123318A1
    • 2006-06-08
    • US11283732
    • 2005-11-22
    • Sang-Hyo KimSung-Jin ParkHan-Ju KimMin-Goo Kim
    • Sang-Hyo KimSung-Jin ParkHan-Ju KimMin-Goo Kim
    • H03M13/00
    • H03M13/1137H03M13/1114H03M13/114H03M13/116
    • A method and apparatus are provided for decoding an LDPC code including a plurality of check nodes and a plurality of variable nodes. The apparatus includes a check node selection scheduler that selects at least one of the check nodes, an LLR memory that stores an input LLR value for the variable nodes as an initial LLR value and stores updated LLR values for variable nodes connected to the selected check node, and a check node message memory that stores a check node message indicating a result value of check node processing on the selected check node. The apparatus further includes at least one united node processor that generates a variable node message by subtracting the check node message of the selected check node from corresponding LLR values read from the LLR memory, performs check node processing on the variable node message, calculates an LLR value updated by adding the variable node message to the check node processing result value, and delivers the calculated LLR value to the LLR memory.
    • 提供了一种解码包括多个校验节点和多个可变节点的LDPC码的方法和装置。 该装置包括校验节点选择调度器,该校验节点选择调度器选择校验节点中的至少一个,将可变节点的输入LLR值存储为初始LLR值的LLR存储器,并且存储用于连接到所选校验节点的变量节点的更新的LLR值 以及检查节点消息存储器,其将选择的校验节点上指示校验节点处理的结果值的校验节点消息存储。 该装置还包括至少一个联合节点处理器,其通过从从LLR存储器读取的相应LLR值中减去所选择的校验节点的校验节点消息来生成变量节点消息,对变量节点消息执行校验节点处理,计算LLR 通过将变量节点消息添加到校验节点处理结果值来更新值,并将计算出的LLR值传递给LLR存储器。
    • 30. 发明授权
    • Apparatus and method for calculating soft decision value input to channel decoder in a data communication system
    • 用于计算软判决值输入到数据通信系统中的信道解码器的装置和方法
    • US07042954B2
    • 2006-05-09
    • US10244598
    • 2002-09-17
    • Sang-Hyuck HaMin-Goo Kim
    • Sang-Hyuck HaMin-Goo Kim
    • H04L5/12H04L23/02
    • H04L27/38H04L25/067
    • A 64-ary QAM (Quadrature Amplitude Modulation) demodulation apparatus and method for receiving an input signal Rk(Xk,Yk) comprised of a kth quadrature-phase signal Yk and a kth in-phase signal Xk, and generating soft decision values Λ(sk,5), Λ(sk,4), Λ(sk,3), Λ(sk,2), Λ(sk,1) and Λ(sk,0) for the input signal Rk(Xk, Yk) are disclosed. A first soft decision value generator receives the quadrature-phase signal Yk of the received signal Rk and a distance value 2a between six demodulated symbols on the same axis, and generates soft decision values Λ(sk,5), Λ(sk,4) and Λ(sk,3) for sixth, fifth, and fourth demodulated symbols. A second soft decision value generator receives the in-phase signal Xk of the received signal Rk and the distance value 2a between the six demodulated symbols on the same axis, and generates soft decision values Λ(sk,2), Λ(sk,1) and Λ(sk,0) for third, second and first demodulated symbol.
    • 包括一个64进制QAM(正交幅度调制)解调装置和方法,用于接收输入信号R SUB(X SUB,Y),k) 的正交相位信号Y k1和ak 同相信号X N k,并产生软的 决策值Lambda(s,k,5),λ(s,k,4),λ(s,k,3),λ(s (k,2),Lambda(s,k,1)和Lambda(s,k,0)对于输入信号R k 公开了(X> k,Y> k)。 第一软判决值生成器接收相同轴上的六个解调符号之间的接收信号R SUB k的正交相位信号Yα和距离值2a, 第六个软判决值Lambda(s,k,5),λ(s,k,4)和λ(s,k,3) 第五和第四解调符号。 第二软判决值生成器接收同一信号R SUB的同相信号X SUB和相同轴上六个解调符号之间的距离值2a,以及 生成第三个软判决值Lambda(s,k,2),Lambda(s,k,1)和λ(s,k,0) ,第二和第一解调符号。