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    • 4. 发明授权
    • Receiving device and decoding method thereof
    • 接收装置及其解码方法
    • US08464139B2
    • 2013-06-11
    • US12360477
    • 2009-01-27
    • Shunji MiyazakiKazuhisa ObuchiNorihiro Ikeda
    • Shunji MiyazakiKazuhisa ObuchiNorihiro Ikeda
    • H03M13/00
    • H03M13/2978H03M13/2975H03M13/6561H04L1/005H04L1/0052H04L1/0066
    • A receiving device in a communication system that separates one frame of information bits into plural blocks, performs turbo encoding of the information bits of each block and transmits the result, and decodes the encoded information bits, where the receiving device includes plural decoders number of which is less than the number of blocks per frame. Each decoder performs a decoding process on encoded information bits of each block that have been expressed by likelihood, when a condition for stopping decoding is met, executes the decoding process of encoded information bits of another block for which decoding has not yet been performed. When the condition for stopping decoding has been met for all blocks before the number of times decoding has been performed for each decoder reaches a preset maximum number of repetitions, the decoding results of all the blocks are serially combined, an error detection process is executed.
    • 在将一帧信息比特分离成多个块的通信系统中的接收装置,对每个块的信息比特进行Turbo编码,并发送结果,并对编码的信息比特进行解码,其中接收装置包括多个解码器,其数量为 小于每帧的块数。 当满足停止解码的条件时,每个解码器对已经由似然度表示的每个块的编码信息比特执行解码处理,执行尚未执行解码的另一个块的编码信息比特的解码处理。 在对每个解码器执行解码的次数达到预定的最大重复次数之前,当已经满足所有块的停止解码的条件时,所有块的解码结果被串行组合,执行错误检测处理。
    • 5. 发明授权
    • Decoder device and decoding method
    • 解码器和解码方法
    • US08250446B2
    • 2012-08-21
    • US12071903
    • 2008-02-27
    • Shunji MiyazakiKazuhisa ObuchiJunya Mikami
    • Shunji MiyazakiKazuhisa ObuchiJunya Mikami
    • G06F11/00
    • H03M13/2957H03M13/3905H03M13/6577H03M13/658H03M13/6588
    • A decoder having an element decoding unit generating external information for input data, including an exponent position determining unit, when the external information output from the element decoding unit is input, of information excluding a sign bit from the external information, specifying an exponent that is a bit position where a value different from a sign bit first appears, a mantissa obtaining unit obtaining information of 1-bit or a plurality of bits in a position next to the exponent as a mantissa out of the external information, a storage unit storing the exponent and the mantissa and a restoring unit restoring the external information by reading the exponent and the mantissa stored in the storage unit, wherein the element decoding unit performs iteration decoding based on the restored external information is utilized.
    • 一种解码器,具有生成用于输入数据的外部信息的元素解码单元,包括指数位置确定单元,当从元素解码单元输出的外部信息被输入时,从外部信息中排除符号位以外的信息,指定指数为 一个位号,其中与符号位不同的值首先出现,一个尾数获得单元获取位于该指数旁边位置的1位或多个位的信息作为外部信息中的尾数,存储单元存储 指数和尾数,以及恢复单元,通过读取存储在存储单元中的指数和尾数来恢复外部信息,其中元素解码单元基于恢复的外部信息进行迭代解码。
    • 8. 发明授权
    • Transmitting apparatus with bit arrangement method
    • 带排列方式的发送装置
    • US07860186B2
    • 2010-12-28
    • US10899068
    • 2004-07-27
    • Tetsuya YanoKazuhisa ObuchiShunji Miyazaki
    • Tetsuya YanoKazuhisa ObuchiShunji Miyazaki
    • H04L27/36
    • H04L27/3488H03M13/25H03M13/2957H04L1/0041H04L1/0057H04L1/0067H04L1/16
    • A transmitting apparatus comprising circuitry operable to generate a plurality of bit sequences using bits included in a first data block and a second data block, circuitry operable to control the plurality of bit sequences to correspond to a signal point on the phase plane, comprising a bit sequence generating unit operable to control the generation of the bit sequences to adjust an occupation rate occupied with predetermined bits included in the first data block to be closer to an occupation rate occupied with predetermined bits included in the second data block in regard to bit positions of the predetermined bits, based on an error tolerance of the respective bit sequences generated resulting from the correspondence to a signal point on the phase plane, and circuitry operable to transmit the signals obtained by multi-level modulations in accordance with each signal point.
    • 一种发送装置,包括可操作以使用包括在第一数据块和第二数据块中的比特来生成多个比特序列的电路,所述电路可操作以控制所述多个比特序列以对应于所述相位平面上的信号点,包括比特 序列产生单元,其可操作以控制比特序列的生成,以调整占据第一数据块中包含的预定比特占有率的占有率,以使其相对于第二数据块中包含的预定比特占据的占用率更接近第 基于由与相位平面上的信号点的对应产生的相应比特序列的误差容限,以及可操作以根据每个信号点发送通过多电平调制获得的信号的电路。
    • 9. 发明授权
    • Data receiving apparatus and hybrid-ARQ communication system
    • 数据接收装置和混合ARQ通信系统
    • US07500166B2
    • 2009-03-03
    • US11152902
    • 2005-06-15
    • Shunji MiyazakiKazuhisa ObuchiTetsuya Yano
    • Shunji MiyazakiKazuhisa ObuchiTetsuya Yano
    • G08C25/02H04L1/18
    • H04L1/1812H04L1/1819H04L1/1845H04L1/201
    • A receiver receives data transmitted from a transmitter. The data is stored in a buffer, and a reliability value of the data is computed by a computing unit. A determining unit determines reliability of the data by comparing a reliability value of existing data in the buffer and a reliability value of the data. When the reliability value of the data is higher than a predetermined value, the existing data is combined with the data. Then, an error correcting unit performs error correcting on combined data obtained, and outputs decoded bits. If the combined data includes many errors, retransmission of the data is requested to the transmitter. When the reliability value of the data is lower than the predetermined value, retransmission of data is directly requested without combining the data with the existing data.
    • 接收机接收从发射机发送的数据。 数据存储在缓冲器中,数据的可靠性值由计算单元计算。 确定单元通过比较缓冲器中现有数据的可靠性值和数据的可靠性值来确定数据的可靠性。 当数据的可靠性值高于预定值时,将现有数据与数据组合。 然后,错误校正单元对获得的组合数据执行纠错,并输出解码的比特。 如果组合数据包含许多错误,则向发射机请求数据的重传。 当数据的可靠性值低于预定值时,直接请求重发数据而不将数据与现有数据进行组合。
    • 10. 发明授权
    • Fading frequency estimating apparatus
    • 衰落频率估计装置
    • US07043207B2
    • 2006-05-09
    • US11034629
    • 2005-01-13
    • Shunji Miyazaki
    • Shunji Miyazaki
    • H04B17/00H04B15/00H03D1/04
    • H04B17/3911H04B17/309
    • The invention relates to a fading frequency estimating apparatus that performs a predetermined signal processing on a radio frequency signal that arrives through a radio transmission channel, to estimate a frequency of fading occurring on the radio transmission channel. An object of the present invention is to quickly and accurately estimate a fading frequency without need to use a very complicated structure. The fading frequency estimating apparatus includes a frequency analyzing section obtaining at two instances a frequency spectrum of a sequence of differences in instantaneous values of envelop of signals that chronologically arrive through the radio transmission channel, the two instances apart from each other with an interval necessary for a characteristic of the radio transmission channel to be steady, and it includes an estimating section estimating a frequency of fading to be such a frequency that the magnitude of the frequency spectrum is to be maximum.
    • 本发明涉及对通过无线电传输信道到达的射频信号执行预定信号处理的衰落频率估计装置,以估计在无线电传输信道上发生的衰落频率。 本发明的目的是快速且准确地估计衰落频率,而不需要使用非常复杂的结构。 衰落频率估计装置包括频率分析部分,其在两个实例处获得通过无线电传输信道按时间顺序到达的信号的包络的瞬时值的差异序列的频谱,两个实例彼此间隔,间隔为 无线电传输信道的特性是稳定的,并且其包括将衰落频率估计为频谱幅度最大的频率的估计部分。