Phase rotation method for reducing PAPR
    1.
    发明授权
    Phase rotation method for reducing PAPR 有权
    减少PAPR的相位旋转方法

    公开(公告)号:US08374074B2

    公开(公告)日:2013-02-12

    申请号:US12941964

    申请日:2010-11-08

    IPC分类号: H04J11/00

    CPC分类号: H04L27/2621

    摘要: A method of reducing a signal peak to average power ratio (PAPR) for a transmission channel in a wireless communication system is disclosed. The transmission channel is divided into a plurality of channel segments, and the method includes calculating PAPRs corresponding to the plurality of channel segments by a plurality of phase rotation vectors; selecting a plurality of specified phase rotation vectors from the plurality of phase rotation vectors according to the calculated PAPRs; and using one of the plurality of specified phase rotation vectors to rotate a phase of a signal to be transmitted.

    摘要翻译: 公开了一种降低无线通信系统中的传输信道的信号峰均功率比(PAPR)的方法。 传输信道被划分为多个信道段,并且该方法包括通过多个相位旋转矢量来计算与多个信道段相对应的PAPR; 根据所计算的PAPR从多个相位旋转矢量中选择多个规定的相位旋转矢量; 以及使用所述多个指定相位旋转矢量中的一个旋转要发送的信号的相位。

    Method of detecting transmission channel and related wireless communication system
    2.
    发明授权
    Method of detecting transmission channel and related wireless communication system 有权
    检测传输通道及相关无线通信系统的方法

    公开(公告)号:US08254479B2

    公开(公告)日:2012-08-28

    申请号:US12501486

    申请日:2009-07-12

    IPC分类号: H04L17/28 H04L27/00

    摘要: A method and related system of transmission channel detection condition in a wireless communication system are disclosed. The method includes receiving a symbol, performing a channel estimation operation to generate a channel estimation result according to the symbol, performing a cross correlation operation on the channel estimation result and an initial channel estimation result to generate an operation result, and determining whether the condition of the transmission channel have changed or not.

    摘要翻译: 公开了一种在无线通信系统中的传输信道检测条件的方法和相关系统。 该方法包括接收符号,执行信道估计操作以根据符号生成信道估计结果,对信道估计结果执行互相关操作和初始信道估计结果以产生操作结果,以及确定条件 的传输通道已经改变了。

    Method for carry estimation of reduced-width multipliers
    3.
    发明申请
    Method for carry estimation of reduced-width multipliers 有权
    缩小宽乘法器的进位估计方法

    公开(公告)号:US20110185000A1

    公开(公告)日:2011-07-28

    申请号:US12932530

    申请日:2011-02-28

    IPC分类号: G06F7/52

    摘要: A low-error reduced-width multiplier is provided by the present invention. The multiplier can dynamically compensate the truncation error. The compensation value is derived by the dependencies among the multiplier partial products, and thus, can be analyzed according to the multiplication type and the multiplier input statistics.

    摘要翻译: 本发明提供了低误差减小倍数。 乘数可以动态补偿截断误差。 补偿值由乘数部分乘积之间的相关性导出,因此可以根据乘法类型和乘数输入统计量进行分析。

    SIGNAL PROCESSING METHOD AND COMMUNICATION SYSTEM USING THE SAME
    5.
    发明申请
    SIGNAL PROCESSING METHOD AND COMMUNICATION SYSTEM USING THE SAME 审中-公开
    信号处理方法和通信系统

    公开(公告)号:US20110119567A1

    公开(公告)日:2011-05-19

    申请号:US12945491

    申请日:2010-11-12

    IPC分类号: H03M13/23 G06F11/10

    摘要: A signal processing circuit in a transmitter of a communication system comprises an appending circuit, a scrambler, an FEC encoder and a stream parser. The appending circuit is configured to divide a packet data string into a plurality of divided data strings, append a predetermined string to the tail of each divided data string, and output the appended data strings sequentially. The scrambler is configured to perform a scramble operation for the appended data strings. The FEC encoder is configured to sequentially encode the output data strings of the scrambler into convolutional code-words complying with the requirements of a MIMO communication system. The stream parser is configured to forward the convolutional code-words to at least a stream signal processing circuit.

    摘要翻译: 通信系统的发射机中的信号处理电路包括附加电路,加扰器,FEC编码器和流解析器。 附加电路被配置为将分组数据串划分成多个划分的数据串,将预定的字符串附加到每个划分的数据串的尾部,并且顺序地输出附加的数据串。 加扰器被配置为对所附加的数据串执行加扰操作。 FEC编码器被配置为将扰码器的输出数据串顺序地编码成符合MIMO通信系统的要求的卷积码字。 流解析器被配置为将卷积码字转发到至少一个流信号处理电路。

    METHOD FOR SWITCHING BETWEEN A LONG GUARD INTERVAL AND A SHORT GUARD INTERVAL AND MODULE USING THE SAME
    6.
    发明申请
    METHOD FOR SWITCHING BETWEEN A LONG GUARD INTERVAL AND A SHORT GUARD INTERVAL AND MODULE USING THE SAME 审中-公开
    用于在长时间间隔和短时间间隔之间进行切换的方法和使用其的模块

    公开(公告)号:US20100202301A1

    公开(公告)日:2010-08-12

    申请号:US12486503

    申请日:2009-06-17

    IPC分类号: H04L12/26 H04L27/28

    摘要: The module for switching between a long guard interval and a short guard interval comprises a signal processing unit, a measurement unit, a comparison unit and a switching unit. The module receives a first data symbol, and the data symbol has one of a long guard interval and a short guard interval. The signal processing unit is configured to generate a second data symbol in accordance with the first data symbol. The measurement unit is configured to measure a portion of the first and second data symbols in order to generate a first measurement value and a second measurement value. The comparison unit is configured to generate an output signal by comparing the first and second measurement values with a threshold value. The switching unit is configured to selectively switch guard intervals of subsequent data symbols in accordance with the output signal.

    摘要翻译: 用于在长保护间隔和短保护间隔之间切换的模块包括信号处理单元,测量单元,比较单元和切换单元。 模块接收第一数据符号,数据符号具有长保护间隔和短保护间隔之一。 信号处理单元被配置为根据第一数据符号生成第二数据符号。 测量单元被配置为测量第一和第二数据符号的一部分,以便产生第一测量值和第二测量值。 比较单元被配置为通过将第一测量值和第二测量值与阈值进行比较来生成输出信号。 开关单元被配置为根据输出信号有选择地切换后续数据符号的保护间隔。

    OPERATING METHOD APPLIED TO LOW DENSITY PARITY CHECK (LDPC) DECODER AND CIRCUIT THEREOF
    9.
    发明申请
    OPERATING METHOD APPLIED TO LOW DENSITY PARITY CHECK (LDPC) DECODER AND CIRCUIT THEREOF 有权
    适用于低密度奇偶校验(LDPC)解码器及其电路的操作方法

    公开(公告)号:US20090037799A1

    公开(公告)日:2009-02-05

    申请号:US11939119

    申请日:2007-11-13

    IPC分类号: H03M13/47 G06F11/00

    摘要: An operating method applied to low density parity check (LDPC) decoders and the circuit thereof are proposed, in which original bit nodes are incorporated into check nodes for simultaneous operation. The bit node messages are generated according to the different between the newly generated check messages and the previously check node messages. The bit node messages can be updated immediately, and the decoder throughput can be improved. In the other way, the required memory of LDPC decoders can be effectively reduced, and the decoding speed can also be enhanced.

    摘要翻译: 提出了一种应用于低密度奇偶校验(LDPC)解码器及其电路的操作方法,其中将原始比特节点并入校验节点以用于同时操作。 根据新生成的检查消息和先前检查节点消息之间的不同,生成位节点消息。 可以立即更新位节点消息,并且可以提高解码器吞吐量。 另一方面,可以有效地减少LDPC解码器所需的存储器,并且也可以提高解码速度。

    Method and apparatus for self-compensation on belief-propagation algorithm
    10.
    发明申请
    Method and apparatus for self-compensation on belief-propagation algorithm 有权
    置信传播算法自补偿方法与装置

    公开(公告)号:US20070283213A1

    公开(公告)日:2007-12-06

    申请号:US11492579

    申请日:2006-07-25

    IPC分类号: H03M13/00

    摘要: A self-compensation method includes: firstly using a min-sum algorithm to derive multiple output values in order to approach a operational result of the checking side of a belief-propagation; and then checking the present iteration number of decoding based on a checking rule; and finally, if in the previous step the present iteration number is identified with a to-be-corrected state, then performing a compensation procedure on the multiple output values, wherein the compensation term is dynamically selected in accordance with an input value of the checking nodes of the belief-propagation. The invention also provides an automatic compensation apparatus, which consists of devices such as a min-sum operating unit, and a dynamic quantization control unit, etc., which can be used, while executing the invented method described above, to decode the belief-propagation algorithm.

    摘要翻译: 自补偿方法包括:首先使用最小和算法导出多个输出值,以接近置信传播的检验侧的运算结果; 然后根据检查规则检查当前迭代次数; 最后,如果在前一步骤中以当前迭代次数被识别为待校正状态,则对多个输出值执行补偿过程,其中根据检查的输入值来动态地选择补偿项 信念传播的节点。 本发明还提供了一种自动补偿装置,其包括诸如最小和运算单元和动态量化控制单元等的装置,其可以在执行上述发明的方法时使用,以解码信念 - 传播算法。