Apparatus and method for receiving data through channels in mobile communication system
    32.
    发明申请
    Apparatus and method for receiving data through channels in mobile communication system 审中-公开
    用于通过移动通信系统中的信道接收数据的装置和方法

    公开(公告)号:US20050073978A1

    公开(公告)日:2005-04-07

    申请号:US10959137

    申请日:2004-10-07

    CPC分类号: H04L1/1816

    摘要: An apparatus for receiving data through channels in a communication system including a first channel for transmitting control information related to a second channel and the second channel for transmitting packet data, the apparatus comprising: a first channel decoder for decoding the first channel and outputting control information; an active Walsh mask storing section for storing a Walsh mask acquired from the control information; a second channel decoder for decoding the second channel using the Walsh mask stored in the active Walsh mask storing section and outputting a decoding result; and a control unit for changing the Walsh mask to a previous Walsh mask if a Walsh mask error is determined according the decoding result.

    摘要翻译: 一种用于在通信系统中通过信道接收数据的装置,包括用于发送与第二信道有关的控制信息的第一信道和用于发送分组数据的第二信道,该装置包括:第一信道解码器,用于解码第一信道并输出控制信息 ; 活动的沃尔什掩模存储部分,用于存储从控制信息获取的沃尔什掩模; 第二信道解码器,用于使用存储在活动沃尔什掩模存储部分中的沃尔什掩模来解码第二信道,并输出解码结果; 以及控制单元,用于如果根据解码结果确定沃尔什掩模误差,则将沃尔什掩模改变为先前的沃尔什掩模。

    Apparatus and method for supporting automatic repeat request in a high-speed wireless packet data communication system
    33.
    发明授权
    Apparatus and method for supporting automatic repeat request in a high-speed wireless packet data communication system 有权
    在高速无线分组数据通信系统中支持自动重复请求的装置和方法

    公开(公告)号:US07447968B2

    公开(公告)日:2008-11-04

    申请号:US10421818

    申请日:2003-04-24

    IPC分类号: G08C25/02 H04L1/18

    摘要: Disclosed is an apparatus and method for supporting automatic repeat request (ARQ) in a high-speed wireless packet data communication system. A mobile station receives control information including a subpacket identifier (SP_ID) representing the sequence of a subpacket, the size of an encoder packet (EP_SIZE), and a sequence identifier (AI_SN) that is toggled each time a new encoder packet is transmitted, while receiving one of a plurality of subpackets generated by segmenting a bit stream acquired by encoding a transmission encoder packet. The mobile station determines whether it will perform a decoding process caused by initial transmission or a decoding process caused by retransmission on the received subpacket, based on the control information.

    摘要翻译: 公开了一种用于在高速无线分组数据通信系统中支持自动重发请求(ARQ)的装置和方法。 移动站接收控制信息,该控制信息包括表示子分组序列的子分组标识符(SP_ID),编码器分组的大小(EP_SIZE)以及每次发送新的编码器分组时切换的序列标识符(AI_SN),同时 接收通过分割通过对发送编码器分组进行编码而获取的比特流而生成的多个子分组中的一个。 基于控制信息,移动台确定是否将由初次发送引起的解码处理或由接收的子分组上的重传引起的解码处理。

    Interleaver and interleaving method in a communication system
    34.
    发明授权
    Interleaver and interleaving method in a communication system 有权
    通信系统中的交织器和交织方法

    公开(公告)号:US07137044B2

    公开(公告)日:2006-11-14

    申请号:US10724877

    申请日:2003-12-02

    IPC分类号: H03M13/27

    摘要: A P-BRO interleaver and a method for optimizing parameters according to an interleaver size for the P-BRO interleaver. The P-BRO interleaver sequentially, by columns, arranges an input data stream of size N in a matrix having 2m rows and (J−1) columns, and R rows in a Jth column, P-BRO interleaves the arranged data, and reads the interleaved data by rows.

    摘要翻译: 一种P-BRO交织器和一种根据P-BRO交织器的交织器尺寸优化参数的方法。 P-BRO交织器通过列依次排列具有2行行(J-1)列的矩阵中的大小为N的输入数据流,在第j列中排列为R行, BRO交织排列的数据,并按行读取交错数据。

    Apparatus and method for reducing Bit Error Rates (BER) and Frame Error Rates (FER) using turbo decoding in a digital communication system
    35.
    发明授权
    Apparatus and method for reducing Bit Error Rates (BER) and Frame Error Rates (FER) using turbo decoding in a digital communication system 有权
    用于在数字通信系统中使用turbo解码来降低误码率(BER)和帧错误率(FER)的装置和方法

    公开(公告)号:US07032156B2

    公开(公告)日:2006-04-18

    申请号:US10622508

    申请日:2003-07-21

    IPC分类号: H03M13/45

    摘要: An Forward Error Correction (FEC) apparatus and method for reducing Bit error rates (BER) and Frame Error Rates (FER) using turbo decoding in a digital communication system. In a constituent decoder for decoding a turbo code, a first adder calculates the LLR of a received code symbol by calculating the difference between the probability of the code symbol being 1 and that of the code symbol being 0 at an arbitrary state of a turbo decoding trellis. A second adder adds the transmission information and a priori information of the code symbol. A third adder calculates the difference between the outputs of the first and second adders as extrinsic information. A first multiplier multiplies the output of the third adder by a predetermined weighting factor as a feedback gain. A correction value calculator calculates a correction value using the difference between the best metric and the second best metric of the code symbol. A fourth adder adds the correction value to the output of the first multiplier.

    摘要翻译: 一种用于在数字通信系统中使用turbo解码来降低误码率(BER)和帧错误率(FER)的前向纠错(FEC)装置和方法。 在用于解码turbo码的构成解码器中,第一加法器通过在Turbo解码的任意状态下计算代码符号为1的概率与代码符号为0的概率之间的差来计算接收到的代码符号的LLR 格子 第二加法器将传输信息和代码符号的先验信息相加。 第三加法器计算第一和第二加法器的输出之间的差作为外在信息。 第一乘法器将第三加法器的输出乘以预定的加权因子作为反馈增益。 校正值计算器使用代码符号的最佳度量和第二最佳度量之间的差来计算校正值。 第四加法器将校正值与第一乘法器的输出相加。

    Apparatus and method for generating and decoding forward error correction codes having variable rate in a high-rate wireless data communication system
    36.
    发明申请
    Apparatus and method for generating and decoding forward error correction codes having variable rate in a high-rate wireless data communication system 有权
    用于在高速率无线数据通信系统中产生和解码具有可变速率的前向纠错码的装置和方法

    公开(公告)号:US20050160347A1

    公开(公告)日:2005-07-21

    申请号:US11038183

    申请日:2005-01-21

    摘要: An apparatus for generating Quasi-Complementary Duo-Binary Turbo Codes (QC-DBTC). The apparatus includes a QC-DBTC encoder which receives an information symbol stream and generates a plurality of systematic symbol streams and a plurality of parity symbol streams according to a given code rate. The apparatus further includes a quad-symbol mapper which quad-maps the systematic symbol streams to one symbol stream, a channel interleaver which independently interleaves the quad-mapped systematic symbol stream and the parity symbol streams, quad-demaps the quad-mapped systematic symbol stream, interlaces symbols in parity symbol streams, and serial-concatenates the quad-demapped systematic symbol stream to the interlaced parity symbol streams. A duo-binary turbo code generator is further provided to repeat the serial-concatenated symbol stream, and select a predetermined number of symbols from the repeated symbol stream according to a code rate and selection information, thereby generating QC-DBTC codes.

    摘要翻译: 一种用于产生准互补二进制Turbo码(QC-DBTC)的装置。 该装置包括QC-DBTC编码器,其接收信息符号流,并根据给定的码率产生多个系统符号流和多个奇偶校验符号流。 该装置还包括将系统符号流四维映射到一个符号流的四符号映射器,独立地交错四映射系统符号流和奇偶校验符号流的信道交织器,将四映射系统符号 流,在奇偶校验符号流中交织符号,并将四次映射映射的系统符号流串行连接到隔行扫描奇偶校验符号流。 进一步提供二进制二进制turbo码发生器以重复串联连接的符号流,并根据码率和选择信息从重复符号流中选择预定数量的码元,由此产生QC-DBTC码。

    Interleaving apparatus and method for a communication system
    37.
    发明授权
    Interleaving apparatus and method for a communication system 有权
    用于通信系统的交错装置和方法

    公开(公告)号:US06910110B2

    公开(公告)日:2005-06-21

    申请号:US10338715

    申请日:2003-01-09

    IPC分类号: H03M13/27 H04L1/00 G06F12/00

    摘要: An interleaving apparatus and method for a communication system which can be applied to determine a new interleaver size N′=2m×(j+1) and addresses of 0 to N′−1, if a given interleaver size N is larger than 2m×j and smaller than 2m×(j+1), where m represents a first parameter indicating a number of consecutive zero bits from a least significant bit (LSB) to a most significant bit (MSB), and j represents a second parameter corresponding to a decimal value other than said consecutive zero bits. The interleaving apparatus and method sequentially stores N input data bits in an interleaver memory with the new interleaver size N′ from an address 0 to an address N−1. The interleaving apparatus and method then executes a Partial Bit Reversal(PBRO)-interleaving the memory with the new interleaver size N′, and reads data from the memory by deleting addresses corresponding to addresses of N to N′−1 of the memory before interleaving.

    摘要翻译: 一种用于通信系统的交织装置和方法,其可应用于确定新的交织器尺寸N'= 2×(j + 1)和0至N'-1的地址,如果给定 交织器尺寸N大于2×xj且小于2×x(j + 1),其中m表示表示来自a的连续零位数的第一参数 最低有效位(LSB)到最高有效位(MSB),并且j表示对应于除了所述连续零位之外的十进制值的第二参数。 交织装置和方法将N个输入数据比特顺序地存储在具有新的交织器大小N'的交织器存储器中,从地址0到地址N-1。 然后,交织装置和方法执行部分位冲突(PBRO) - 以新的交织器大小N'交织存储器,并且通过在交织之前删除与存储器的N到N'-1的地址相对应的地址来从存储器读取数据 。

    Apparatus and method for calibration of transmitter in communication device
    40.
    发明授权
    Apparatus and method for calibration of transmitter in communication device 有权
    通信设备中发射机校准的装置和方法

    公开(公告)号:US08787847B2

    公开(公告)日:2014-07-22

    申请号:US13549937

    申请日:2012-07-16

    IPC分类号: H04B17/00 H04L25/49

    摘要: A method and an apparatus for calibration of a transmitter not having a Surface Acoustic Wave (SAW) filter are provided. The apparatus includes a calibration unit for outputting a detuning signal by which a resonance frequency of a Radio Frequency (RF) circuit is detuned with respect to a transmit operating frequency, and an RF unit for changing the resonance frequency according to the detuning signal and for outputting an out-of-band noise and a transmit signal having a relatively lower power than that of a case where the resonance frequency and the transmit operating frequency are tuned to each other.

    摘要翻译: 提供了一种用于校准不具有表面声波(SAW)滤波器的发射器的方法和装置。 该装置包括用于输出失谐信号的校准单元,通过该失谐信号,射频(RF)电路的谐振频率相对于发射操作频率失谐,以及用于根据失谐信号改变谐振频率的RF单元, 输出与谐振频率和发送操作频率相互调谐的情况相比功率相对较低的带外噪声和发送信号。