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    • 4. 发明授权
    • Method of scaling soft symbols of an uplink enhanced dedicated transport channel (E-DCH) and method for enabling use of a log-map turbo decoding algorithm for processing the E-DCH
    • 用于缩放上行链路增强型专用传输信道(E-DCH)的软符号的方法以及能够使用对数映射turbo解码算法来处理E-DCH的方法
    • US07929510B2
    • 2011-04-19
    • US11711618
    • 2007-02-28
    • Francis DominiqueHongwei KongWalid E. Nabhane
    • Francis DominiqueHongwei KongWalid E. Nabhane
    • H04B7/208
    • H04L25/067H04L1/0055
    • A method of scaling soft symbols of an uplink E-DCH is provided, where the E-DCH is received from a user in a network for processing in a base station receiver in the network employing a log-MAP turbo decoding algorithm to process the E-DCH. The E-DCH includes an E-DPDCH from which the soft symbols are generated at the base station receiver, and an E-DPCCH used to transmit control information associated with the E-DPDCH, which along with configuration information from a radio network controller (RNC) of the network enables the base station receiver to determine a reference amplitude ratio linked to the actual power offset of the E-DPDCH from the legacy DPCCH. In the method, an estimated E-DPDCH to DPCCH amplitude ratio that represents a scaling factor for the soft symbols is determined, and the soft symbols are scaled by the scaling factor to enable the soft symbols to be processed by the log-MAP turbo decoding algorithm in the base station receiver.
    • 提供了一种缩放上行E-DCH的软符号的方法,其中从网络中的用户接收E-DCH以在网络中的基站接收机中使用log-MAP turbo解码算法处理E -DCH。 E-DCH包括在基站接收机处产生软符号的E-DPDCH,以及用于发送与E-DPDCH相关联的控制信息的E-DPCCH,连同来自无线网络控制器的配置信息 RNC)使得基站接收机能够确定与传统DPCCH的E-DPDCH的实际功率偏移相关联的参考幅度比。 在该方法中,确定表示软符号的缩放因子的估计的E-DPDCH至DPCCH振幅比,并且通过缩放因子缩放软符号,以使得能够通过对数MAP turbo解码处理软符号 算法在基站接收机中。
    • 7. 发明授权
    • Method and apparatus for detecting a packet error in a wireless communications system with minimum overhead using embedded error detection capability of turbo code
    • 用于利用turbo码的嵌入式错误检测能力以最小开销检测无线通信系统中的分组错误的方法和装置
    • US07565594B2
    • 2009-07-21
    • US10926507
    • 2004-08-26
    • Francis DominiqueHongwei KongWalid E Nabhane
    • Francis DominiqueHongwei KongWalid E Nabhane
    • H03M13/00
    • H03M13/2975H03M13/2957
    • The need for separate CRC bits is eliminated by taking advantage of what has been determined to be an embedded error detection capability in a turbo code itself to perform error detection following turbo decoding. Specifically, since the two constituent encoders of a turbo encoder that are used to encode a data packet produce two systematic codes that share the same systematic bits one code, one is used to serve as the parity check for the other. The sign of the log likelihood ratio (LLR) of each systematic bit in a block of decoded data calculated at the end of a turbo decoding cycle is compared with the sign of the LLR of each corresponding bit that was calculated at a previous turbo decoding cycle. If the signs of the LLRs for each comparison do not agree, then a packet error is determined to have occurred; otherwise no packet error is detected.
    • 通过利用在turbo码本身中被确定为嵌入式错误检测能力的优点来消除对单独的CRC比特的需要,以便在turbo解码之后执行错误检测。 具体地说,由于用于编码数据分组的turbo编码器的两个组成编码器产生共享相同系统位的两个系统代码一个代码,所以使用一个用作另一个代码的奇偶校验。 将在turbo解码周期结束时计算的解码数据块中的每个系统比特的对数似然比(LLR)的符号与在先前turbo解码周期中计算的每个相应比特的LLR的符号进行比较 。 如果每个比较的LLR的符号不一致,则确定发生了分组错误; 否则不会检测到数据包错误。
    • 9. 发明授权
    • Method and apparatus for detecting a packet error in a wireless communications system with minimum overhead using tail bits in turbo code
    • 用于利用turbo码中的尾部位以最小开销检测无线通信系统中的分组错误的方法和装置
    • US07395492B2
    • 2008-07-01
    • US10939718
    • 2004-09-13
    • Francis DominiqueHongwei Kong
    • Francis DominiqueHongwei Kong
    • H03M13/03
    • H03M13/09
    • The need for separate CRC bits is eliminated by taking advantage of what has been determined to be an embedded error detection capability of the tail bits generated by the constituent encoders of a turbo coder to perform error detection following turbo decoding. Specifically, it has been recognized that the tail bits are similar to CRC bits that would be generated by a CRC encoder that uses as its generating polynomial the feedback polynomial used by the turbo encoder. At the turbo decoder, after a final turbo decoding iteration cycle, a check is performed on the decoded systematic information bits by calculating the tail bits from the decoded information bits using that generating polynomial and bit-by-bit comparing the calculated tail bits with the systematic tail bits decoded by the turbo decoder. If a mismatch occurs at one or more bit positions, an error is indicated.
    • 通过利用已被确定为由turbo编码器的组成编码器生成的尾部位的嵌入式错误检测能力来进行Turbo解码之后的错误检测来消除对单独CRC位的需要。 具体地,已经认识到,尾比特类似于将由CRC编码器生成的CRC比特,CRC编码器使用turbo编码器使用的反馈多项式作为其生成多项式。 在turbo解码器中,在最终的turbo解码迭代周期之后,通过使用该生成多项式计算来自解码的信息比特的尾比特来对解码的系统信息比特执行检查,并将所计算的尾比特与 由turbo解码器解码的系统尾比特。 如果在一个或多个位位置发生不匹配,则会指示错误。