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1. 发明专利

JP2003069462A Mobile communication receiver and its reception method 有权
标题翻译：移动通信接收机及其接收方法
公开(公告)号：JP2003069462A
公开(公告)日：2003-03-07
申请号：JP2001255889
申请日：2001-08-27
申请人： Fujitsu Ltd , Mobile Techno Corp , 富士通株式会社 , 株式会社モバイルテクノ
发明人： IWAMATSU TAKANORI , SHUTO MASAYUKI , AMAZAWA TAIJI , SATO SHINICHI
IPC分类号： H04B7/08
CPC分类号： H04B7/0865
摘要： PROBLEM TO BE SOLVED: To maximize a signal to noise power ratio even when noise components included in branch signals have no non-correlation. SOLUTION: In the mobile communication receiver that uses a synthesis section 9 to synthesizes signals received by a plurality of reception paths (branches 1, 2) and receive the synthesized signal, a noise correlation detection section 4-2 calculates the correlation between noise signals included in the signals received by the reception paths and a weighting coefficient arithmetic section 6 controls the synthesized signal to have a maximum signal to noise power ratio on the basis of the correlation calculated by the noise correlation detection section 4-2.
摘要翻译：要解决的问题：即使分支信号中包括的噪声分量没有非相关性，也可以使信噪比功率比最大化。解决方案：在使用合成部分9合成由多个接收路径（分支1,2）接收的信号并接收合成信号的移动通信接收机中，噪声相关检测部分4-2计算包括的噪声信号之间的相关性在由接收路径接收的信号中，加权系数运算部6根据由噪声相关检测部4-2计算的相关性，将合成信号控制为具有最大的信噪比功率比。

2. 发明专利

JP2000236288A PROPAGATION LINE ESTIMATING CIRCUIT 失效
公开(公告)号：JP2000236288A
公开(公告)日：2000-08-29
申请号：JP3409099
申请日：1999-02-12
申请人： OKI ELECTRIC IND CO LTD , FUJITSU LTD
发明人： AMAZAWA TAIJI
IPC分类号： H04J13/00 , H04B1/712 , H04B3/10 , H04B7/005
摘要： PROBLEM TO BE SOLVED: To obtain a high accuracy propagation path estimation value even when an insert signal is inserted by removing the data component corresponding to the insert signal from a demodulated signal, inserting a dummy data component, corresponding to a reference signal into the part, and thus regenerating a dummy reference signal. SOLUTION: A data component corresponding to the insert signal is removed from the demodulated signal, and the dummy data component corresponding to the reference signal is inserted into the part to regenerate a dummy reference signal. Even when the entire period of a frame is used to transmit not a pilot symbol and part of the period is used to transmit TCP bits, this circuit will remove signal components corresponding to the TCP bits from a correlative operation result signal S5 supplied to a pilot symbol correlator 5. Then data similar to the data obtained, when a signal of a pilot channel over which pilot symbols are transmitted successively and artificially can be generated.

3. 发明专利

JP2004304368A Device for estimating signal interference ratio and device for estimating interference signal 有权
公开(公告)号：JP2004304368A
公开(公告)日：2004-10-28
申请号：JP2003092867
申请日：2003-03-28
申请人： Fujitsu Ltd , 富士通株式会社
发明人： IWAMATSU TAKANORI , AMAZAWA TAIJI
IPC分类号： H04B17/00 , H04B7/26
摘要： PROBLEM TO BE SOLVED: To provide a signal interference ratio estimating device and a signal interference estimating device capable of calculating the signal interference ratio between a desired signal component included in a communication signal and an interference signal component with high accuracy. SOLUTION: This signal interference ratio estimating device has a first operating means for outputting the mean square of the communication signal as a first output signal P, a second operating means for averaging the communication signal over n samples and outputting the mean square of the averaged communication signal as a second output signal Q, a desired signal calculating means for calculating the desired signal component A by multiplying the difference between the result obtained by multiplying the second output signal by (n), being the number of averaging number and the first output signal, by a prescribed number C A , an interference signal calculating means for calculating the interference signal component B by multiplying the difference between the first output signal and the second output signal by a prescribed number C B , and a signal to interference ratio calculating means for calculating a value that is in proportion to the signal to interference ratio SIR by calculating the ratio of the desired signal component to the interference signal component. COPYRIGHT: (C)2005,JPO&NCIPI

4. 发明专利

JP2003143112A PROPAGATION PATH CHARACTERISTIC ESTIMATION APPARATUS 审中-公开
公开(公告)号：JP2003143112A
公开(公告)日：2003-05-16
申请号：JP2001334040
申请日：2001-10-31
申请人： FUJITSU LTD
发明人： IWAMATSU TAKANORI , AMAZAWA TAIJI
IPC分类号： H04J13/00 , H04L25/02 , H04J13/04
摘要： PROBLEM TO BE SOLVED: To improve estimation information of a propagation path characteristic even in an unknown information section. SOLUTION: In the phase/amplitude characteristic estimation apparatus, first transmission information removing parts (12, 13 and 14) remove transmission information from the received signal of a data channel where already known information is transmitted time-multiplexed between pieces of unknown information and output phase/amplitude information showing phase/amplitude characteristic which the data channel has received at the propagation path. Second transmission information removing parts (16 and 17) remove transmission information from the received signal of the data channel where only unknown information is transmitted and outputs phase/amplitude information showing phase/amplitude characteristic which the data channel has received at the propagation path. An addition part 19 adds the phase/amplitude information outputted from the first and second transmission information removing parts, and a phase/ amplitude estimation part 20 estimates phase characteristic and amplitude characteristic which each channel receive at the propagation path by the output of the addition part.

5. 发明专利

JP2011066504A Concatenated code decoding method and concatenated code decoder 有权
标题翻译：定义的代码解码方法和定义的代码解码器
公开(公告)号：JP2011066504A
公开(公告)日：2011-03-31
申请号：JP2009213162
申请日：2009-09-15
申请人： Fujitsu Ltd , 富士通株式会社
发明人： TANAKA YOSHIAKI , TSURUMI TAKASHI , AMAZAWA TAIJI
IPC分类号： H03M13/29
摘要： PROBLEM TO BE SOLVED: To provide a concatenated code decoder capable of improving error correction characteristics for a concatenated code.
SOLUTION: The concatenated code decoder includes an inner code decoding means to decode an inner code of an input sequence, an outer code decoding means to decode an outer code of the decoded sequence output from the inner code decoding means, a weighting information generation means to generate weighting information based on a decoding success or failure information output from the outer code decoding means, a re-encoding means to re-encode the decoded sequence output from the outer code decoding means, a multiplication means to multiply the re-encoded sequence output from the re-encoding means by the weighting information output from the weighting information generation means to perform weighting, and an addition means to add the re-encoded sequence output from the multiplication means and the input sequence and supply the result to the inner code decoding means. The weighting information generation means generates the first weighting information of a predetermined value when it is determined that decoding is succeeded for the decoded sequence output from the outer code decoding means. Meanwhile, when it is determined that decoding is failed for the decoded sequence output from the outer code decoding means, the weighting information generation means generates second weighting information which is smaller than the first weighting information and has a value exceeding 0.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供能够改善级联代码的纠错特性的级联码解码器。串联码解码器包括：解码输入序列的内部码的内部码解码装置，对从内部码解码装置输出的解码序列的外部码进行解码的外部码解码装置，加权信息基于从外码解码装置输出的解码成功或失败信息生成加权信息的生成装置，对从外码解码装置输出的解码序列进行重新编码的重新编码装置;乘法装置，通过从加权信息产生装置输出的加权信息从重新编码装置输出的编码序列进行加权;以及加法装置，用于将从乘法装置输出的再编码序列和输入序列相加，并将结果提供给内码解码手段。当确定对从外码解码装置输出的解码序列进行解码成功时，加权信息产生装置产生预定值的第一加权信息。同时，当确定对从外码解码装置输出的解码序列进行解码失败时，加权信息产生装置产生小于第一加权信息并且具有超过0的值的第二加权信息。：（C）2011，JPO＆INPIT

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