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    • 32. 发明授权
    • Turbo decoding apparatus and method
    • Turbo解码装置及方法
    • US07584389B2
    • 2009-09-01
    • US10634746
    • 2003-08-06
    • Sung-Jin ParkMin-Goo KimSoon-Jae Choi
    • Sung-Jin ParkMin-Goo KimSoon-Jae Choi
    • G06F11/00
    • H03M13/3927H03M13/2957H03M13/296
    • This invention relates to a turbo decoding apparatus and method for a communication system. A high-rate memory buffer operating at the same frequency as a turbo decoder is arranged between a memory buffer of a receiver and the turbo decoder. The decoding apparatus reads data bits stored in the memory buffer of the receiver via the high-rate memory buffer, delays the read data bits for a time required in the turbo decoder, and then applies the delayed data bits to a Soft-In Soft-Out (SISO) decoder of the turbo decoder. The memory buffer of the receiver outputs data bits at an operating frequency or clock of the turbo decoder.
    • 本发明涉及一种用于通信系统的turbo解码装置和方法。 在turbo接收机的存储缓冲器和turbo解码器之间设置与turbo解码器相同频率工作的高速率存储器缓冲器。 解码装置经由高速率存储器缓冲器读取存储在接收机的存储器缓冲器中的数据位,延迟读取数据位在turbo解码器所需的时间,然后将延迟的数据位应用于软入门软件, (SISO)解码器。 接收机的存储器缓冲器以turbo解码器的工作频率或时钟输出数据位。
    • 34. 发明授权
    • Apparatus and method for turbo decoding using a variable window size
    • 用于使用可变窗口尺寸进行turbo解码的装置和方法
    • US07373582B2
    • 2008-05-13
    • US11135633
    • 2005-05-24
    • Sung-Jin ParkMin-Goo KimSoon-Jae Choi
    • Sung-Jin ParkMin-Goo KimSoon-Jae Choi
    • H03M13/03
    • H03M13/3905H03M13/3972
    • An apparatus and method for turbo decoding using a variable window size. A control logic block receives information about a code rate of received data bits and a data block size, adjusts a window size according to the code rate information, and computes an initial delay. Delta metric blocks compute delta metrics from input data bits of the block size, wherein the delta metrics represent a transition probability for a path from a state to another state, respectively. An alpha metric block receives a delta metric in synchronization with the initial delay, and computes an alpha metric representing a forward state transition probability in each state. One or more beta metric blocks receive delta metrics according to the adjusted window size, and compute beta metrics representing a backward state transition probability in each state, respectively. A log likelihood ratio (LLR) block receives the alpha metric and the beta metrics in synchronization with the initial delay, and computes LLR values for symbols in an ending state. Code reliability is maintained by using a sliding window structure based on a window size varying with a code rate, while simultaneously reducing a decoding time due to an unnecessary initial delay.
    • 一种使用可变窗口尺寸进行turbo解码的装置和方法。 控制逻辑块接收关于接收到的数据位的码率和数据块大小的信息,根据码率信息调整窗口大小,并计算初始延迟。 增量度量块计算来自块大小的输入数据位的增量度量,其中,所述增量度量度分别表示从状态到另一状态的路径的转移概率。 α度量块与初始延迟同步地接收增量度量,并且计算表示每个状态中的前向状态转移概率的α度量。 一个或多个β度量块根据调整的窗口大小接收增量度量,并分别计算表示每个状态中的向后状态转移概率的β度量。 对数似然比(LLR)块与初始延迟同步地接收α度量和β度量,并且计算处于结束状态的符号的LLR值。 通过使用基于以码率变化的窗口尺寸的滑动窗口结构来维持代码可靠性,同时由于不必要的初始延迟而同时减少解码时间。
    • 35. 发明申请
    • Apparatus and method for turbo decoding using a variable window size
    • 用于使用可变窗口尺寸进行turbo解码的装置和方法
    • US20050273687A1
    • 2005-12-08
    • US11135633
    • 2005-05-24
    • Sung-Jin ParkMin-Goo KimSoon-Jae Choi
    • Sung-Jin ParkMin-Goo KimSoon-Jae Choi
    • H03M13/37H03M13/00H03M13/39
    • H03M13/3905H03M13/3972
    • An apparatus and method for turbo decoding using a variable window size. A control logic block receives information about a code rate of received data bits and a data block size, adjusts a window size according to the code rate information, and computes an initial delay. Delta metric blocks compute delta metrics from input data bits of the block size, wherein the delta metrics represent a transition probability for a path from a state to another state, respectively. An alpha metric block receives a delta metric in synchronization with the initial delay, and computes an alpha metric representing a forward state transition probability in each state. One or more beta metric blocks receive delta metrics according to the adjusted window size, and compute beta metrics representing a backward state transition probability in each state, respectively. A log likelihood ratio (LLR) block receives the alpha metric and the beta metrics in synchronization with the initial delay, and computes LLR values for symbols in an ending state. Code reliability is maintained by using a sliding window structure based on a window size varying with a code rate, while simultaneously reducing a decoding time due to an unnecessary initial delay.
    • 一种使用可变窗口尺寸进行turbo解码的装置和方法。 控制逻辑块接收关于接收到的数据位的码率和数据块大小的信息,根据码率信息调整窗口大小,并计算初始延迟。 增量度量块计算来自块大小的输入数据位的增量度量,其中,所述增量度量度分别表示从状态到另一状态的路径的转移概率。 α度量块与初始延迟同步地接收增量度量,并且计算表示每个状态中的前向状态转移概率的α度量。 一个或多个β度量块根据调整的窗口大小接收增量度量,并分别计算表示每个状态中的向后状态转移概率的β度量。 对数似然比(LLR)块与初始延迟同步地接收α度量和β度量,并且计算处于结束状态的符号的LLR值。 通过使用基于以码率变化的窗口尺寸的滑动窗口结构来维持代码可靠性,同时由于不必要的初始延迟而同时减少解码时间。