Method and apparatus for modulating symbols in an orthogonal frequency division multiplexing system and transmission apparatus using the same
    1.
    发明授权
    Method and apparatus for modulating symbols in an orthogonal frequency division multiplexing system and transmission apparatus using the same 有权
    用于在正交频分复用系统中调制符号的方法和装置及使用其的发送装置

    公开(公告)号:US08046398B2

    公开(公告)日:2011-10-25

    申请号:US11966249

    申请日:2007-12-28

    IPC分类号: G06F15/00

    摘要: A method for modulating a symbol in a transmitter of an Orthogonal Frequency Division Multiplexing (OFDM) system. The symbol modulation method includes multiplying an input stream of an Inverse Fast Fourier Transform (IFFT) unit by a Twiddling factor for circular-shifting the input stream of the IFFT unit by a Cyclic Prefix (CP) length; performing IFFT on the input stream of the IFFT unit, which is multiplied by the Twiddling factor; buffering data corresponding to the CP length beginning from a front of an output stream of the IFFT unit; and generating an OFDM symbol by forward-copying the buffered data to a back of the output stream of the IFFT unit.

    摘要翻译: 一种用于调制正交频分复用(OFDM)系统的发射机中的符号的方法。 符号调制方法包括将快速傅里叶逆变换(IFFT)单位的输入流乘以Twiddling因子,以便将IFFT单元的输入流循环移位循环前缀(CP)长度; 对IFFT单元的输入流执行IFFT,乘以Twiddling因子; 从IFFT单元的输出流的前面开始缓冲对应于CP长度的数据; 以及通过将所缓冲的数据转发到所述IFFT单元的输出流的背面来产生OFDM符号。

    METHOD AND APPARATUS FOR MODULATING SYMBOLS IN AN ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING SYSTEM AND TRANSMISSION APPARATUS USING THE SAME
    2.
    发明申请
    METHOD AND APPARATUS FOR MODULATING SYMBOLS IN AN ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING SYSTEM AND TRANSMISSION APPARATUS USING THE SAME 有权
    用于调制正交频分复用系统中的符号的方法和装置及其传输装置

    公开(公告)号:US20080165676A1

    公开(公告)日:2008-07-10

    申请号:US11966249

    申请日:2007-12-28

    IPC分类号: H04J11/00

    摘要: A method for modulating a symbol in a transmitter of an Orthogonal Frequency Division Multiplexing (OFDM) system. The symbol modulation method includes multiplying an input stream of an Inverse Fast Fourier Transform (IFFT) unit by a Twiddling factor for circular-shifting the input stream of the IFFT unit by a Cyclic Prefix (CP) length; performing IFFT on the input stream of the IFFT unit, which is multiplied by the Twiddling factor; buffering data corresponding to the CP length beginning from a front of an output stream of the IFFT unit; and generating an OFDM symbol by forward-copying the buffered data to a back of the output stream of the IFFT unit.

    摘要翻译: 一种用于调制正交频分复用(OFDM)系统的发射机中的符号的方法。 符号调制方法包括将快速傅里叶逆变换(IFFT)单位的输入流乘以Twiddling因子,以便将IFFT单元的输入流循环移位循环前缀(CP)长度; 对IFFT单元的输入流执行IFFT,乘以Twiddling因子; 从IFFT单元的输出流的前面开始缓冲对应于CP长度的数据; 以及通过将所缓冲的数据转发到所述IFFT单元的输出流的背面来产生OFDM符号。

    Apparatus and method for transmission time interval reconfiguration in a mobile communication system
    3.
    发明授权
    Apparatus and method for transmission time interval reconfiguration in a mobile communication system 有权
    移动通信系统中传输时间间隔重配置的装置和方法

    公开(公告)号:US08605665B2

    公开(公告)日:2013-12-10

    申请号:US12679205

    申请日:2008-09-18

    IPC分类号: H04W4/00

    摘要: An apparatus and method for Transmission Time Interval (TTI) reconfiguration in a mobile communication system are provided. The apparatus includes an ACK/NACK determiner, an ACK/NACK controller, and a TTI controller. The ACK/NACK determiner determines if a response signal to be transmitted is ACKnowledgment (ACK) or Non ACKnowledgment (NACK) depending on an error or non-error of data received from a User Equipment (UE). The ACK/NACK controller counts the ACK and NACK determined in the ACK/NACK determiner. The TTI controller identifies if number of the latest ACKs counted in the ACK/NACK controller is continuously generated by preset number of times and, if it is continuously generated by the present number of times, reconfigures a new TTI.

    摘要翻译: 提供了一种移动通信系统中传输时间间隔(TTI)重配置的装置和方法。 该装置包括ACK / NACK确定器,ACK / NACK控制器和TTI控制器。 ACK / NACK确定器根据从用户设备(UE)接收的数据的错误或非错误来确定要发送的响应信号是否为确认(ACK)或非确认(NACK)。 ACK / NACK控制器对在ACK / NACK确定器中确定的ACK和NACK进行计数。 TTI控制器识别ACK / NACK控制器中计数的最新ACK的数量是否按预设次数连续生成,如果连续生成当前次数,则重新配置新的TTI。

    APPARATUS AND METHOD FOR TRANSMISSION TIME INTERVAL RECONFIGURATION IN A MOBILE COMMUNICATION SYSTEM
    4.
    发明申请
    APPARATUS AND METHOD FOR TRANSMISSION TIME INTERVAL RECONFIGURATION IN A MOBILE COMMUNICATION SYSTEM 有权
    移动通信系统中传输时间间隔重新配置的装置和方法

    公开(公告)号:US20100254275A1

    公开(公告)日:2010-10-07

    申请号:US12679205

    申请日:2008-09-18

    IPC分类号: H04L12/26 H04L12/28 H04W4/00

    摘要: An apparatus and method for Transmission Time Interval (TTI) reconfiguration in a mobile communication system are provided. The apparatus includes an ACK/NACK determiner, an ACK/NACK controller, and a TTI controller. The ACK/NACK determiner determines if a response signal to be transmitted is ACKnowledgment (ACK) or Non ACKnowledgment (NACK) depending on an error or non-error of data received from a User Equipment (UE). The ACK/NACK controller counts the ACK and NACK determined in the ACK/NACK determiner. The TTI controller indentifies if number of the latest ACKs counted in the ACK/NACK controller is continuously generated by preset number of times and, if it is continuously generated by the present number of times, reconfigures a new TTI.

    摘要翻译: 提供了一种移动通信系统中传输时间间隔(TTI)重配置的装置和方法。 该装置包括ACK / NACK确定器,ACK / NACK控制器和TTI控制器。 ACK / NACK确定器根据从用户设备(UE)接收的数据的错误或非错误来确定要发送的响应信号是否为确认(ACK)或非确认(NACK)。 ACK / NACK控制器对在ACK / NACK确定器中确定的ACK和NACK进行计数。 TTI控制器确定在ACK / NACK控制器中计数的最新ACK的数量是否按预设次数连续生成,如果连续生成当前次数,则重新配置新的TTI。

    Transceiver apparatus and method for efficient retransmission of high-speed packet data
    5.
    发明授权
    Transceiver apparatus and method for efficient retransmission of high-speed packet data 有权
    用于有效重传高速分组数据的收发器装置和方法

    公开(公告)号:US07676732B2

    公开(公告)日:2010-03-09

    申请号:US11093910

    申请日:2005-03-31

    IPC分类号: H03M13/00 H03M13/03

    摘要: A method for retransmitting coded bits by a transmitter in response to a retransmission request from a receiver in a mobile communication system. The method comprises determining a modulation technique to be used at retransmission as a modulation technique having a lower modulation order than a modulation technique used at initial transmission; determining a puncturing pattern according to an HARQ (Hybrid Automatic Repeat Request) type, and selecting as many coded bits as the number of coded bits that can be symbol-mapped by the determined modulation technique, among the coded bits punctured by the determined puncturing pattern; and symbol-mapping the selected coded bits by the determined modulation technique, and transmitting the symbol-mapped coded bits to the receiver.

    摘要翻译: 响应于来自移动通信系统中的接收机的重传请求,由发射机重传编码比特的方法。 该方法包括:确定在重发时使用的调制技术作为具有比在初始传输时使用的调制技术更低的调制阶数的调制技术; 根据HARQ(Hybrid Automatic Repeat Request,混合自动重复请求)类型确定删截图案,并且通过所确定的删截图案选择与被确定的调制技术可以进行符号映射的编码比特数一样多的编码比特 ; 并且通过所确定的调制技术对所选择的编码比特进行符号映射,并将符号映射的编码比特发送到接收机。

    Apparatus and method for transmitting and receiving data in a CDMA mobile communication system
    6.
    发明授权
    Apparatus and method for transmitting and receiving data in a CDMA mobile communication system 有权
    用于在CDMA移动通信系统中发送和接收数据的装置和方法

    公开(公告)号:US07496079B2

    公开(公告)日:2009-02-24

    申请号:US10183824

    申请日:2002-06-27

    IPC分类号: H04B7/216

    摘要: Disclosed is a data transmission/reception apparatus and method for minimizing decoding errors during high-speed packet transmission in a CDMA mobile communication system. When retransmitting data in the Hybrid Automatic Repeat Request (“H-ARQ”) technique, the data transmission/reception apparatus and method performs symbol mapping on coded bits to be retransmitted by allocating different reliabilities to the coded bits according to the number of retransmissions, thus resulting in an improvement of system performance.

    摘要翻译: 公开了一种用于在CDMA移动通信系统中在高速分组传输期间最小化解码错误的数据发送/接收装置和方法。 当在混合自动重复请求(“H-ARQ”)技术中重传数据时,数据发送/接收装置和方法通过根据重发次数向编码比特分配不同的可靠性来对待重传的编码比特执行符号映射, 从而导致系统性能的提高。

    Apparatus and method for transmitting/receiving data using a multiple antenna diversity scheme in a mobile communication system
    7.
    发明授权
    Apparatus and method for transmitting/receiving data using a multiple antenna diversity scheme in a mobile communication system 有权
    一种用于在移动通信系统中使用多天线分集方案发送/接收数据的设备和方法

    公开(公告)号:US07453948B2

    公开(公告)日:2008-11-18

    申请号:US10855894

    申请日:2004-05-28

    IPC分类号: H04B7/02 H03C7/02

    摘要: An apparatus and method for transmitting/receiving data using a multiple antenna scheme in a mobile communication system are provided. First and second code symbol sequences are generated by encoding a data symbol sequence for transmission in a predetermined encoding method. Transmission of the two code symbol sequences through the first and second transmit antennas is controlled such that if the data symbol sequence is initially transmitted, the first code symbol sequence is transmitted through the first transmit antenna and the second code symbol sequence is transmitted through the second transmit antenna and, if the data symbol sequence is retransmitted, the first code symbol sequence is transmitted through the second transmit antenna and the second code symbol sequence is transmitted through the first transmit antenna.

    摘要翻译: 提供了一种在移动通信系统中使用多天线方案发送/接收数据的装置和方法。 通过以预定的编码方法对用于传输的数据符号序列进行编码来生成第一和第二代码符号序列。 控制通过第一和第二发射天线的两个码符号序列的传输,使得如果最初发送数据符号序列,则通过第一发射天线发送第一码符号序列,并且通过第二发射天线发送第二码符号序列 并且如果重发数据符号序列,则通过第二发射天线发射第一码符号序列,并且通过第一发射天线发送第二码符号序列。