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    • 3. 发明授权
    • OFDM reception device, OFDM reception circuit, OFDM reception method, and OFDM reception program
    • OFDM接收装置,OFDM接收电路,OFDM接收方法和OFDM接收程序
    • US09065713B2
    • 2015-06-23
    • US13519203
    • 2011-10-03
    • Yoshinobu Matsumura
    • Yoshinobu Matsumura
    • H04L27/06H04L27/26
    • H04L27/2607H04L27/2613H04L27/2657H04L27/2675
    • An OFDM reception device including: a first orthogonal transformation unit that orthogonally transforms a signal for a useful symbol duration included in an OFDM signal and outputs a resulting orthogonally transformed signal; a second orthogonal transformation unit that orthogonally transforms a signal for a guard interval duration included in the OFDM signal and outputs a resulting orthogonally transformed signal; a detection unit that detects a wide band carrier frequency error amount according to the signal output from the first orthogonal transformation unit and the signal output from the second orthogonal transformation unit; and a correction unit that corrects a wide band carrier frequency shift of the OFDM symbol according to the wide band carrier frequency error amount detected by the detection unit.
    • 一种OFDM接收装置,包括:第一正交变换单元,对包含在OFDM信号中的有用符号持续时间的信号进行正交变换,并输出得到的正交变换信号; 第二正交变换单元,对包含在OFDM信号中的保护间隔持续时间的信号进行正交变换,并输出得到的正交变换信号; 检测单元,根据从第一正交变换单元输出的信号和从第二正交变换单元输出的信号,检测宽带载波频率误差量; 以及校正单元,其根据由检测单元检测到的宽带载波频率误差量校正OFDM符号的宽带载波频移。
    • 5. 发明申请
    • RECEIVER, INTEGRATED CIRCUIT, RECEIVING METHOD, AND PROGRAM
    • 接收机,集成电路,接收方法和程序
    • US20130114659A1
    • 2013-05-09
    • US13809921
    • 2012-05-17
    • Mariko MurakamiYoshinobu Matsumura
    • Mariko MurakamiYoshinobu Matsumura
    • H04L12/26
    • H04L43/0823H04J11/0036H04L1/0047H04L5/005H04L25/022H04L25/0232H04L27/2662H04L27/2691H04L2025/03414H04N17/004
    • A receiver includes a demodulator that demodulates a modulation wave modulated according to orthogonal frequency division multiplexing (OFDM). The demodulator includes an interference wave detector that detects that received modulation wave includes interference wave when received power of each sample of the received modulation wave exceeds a threshold, and upon the detection, executes replacement processing of replacing a received signal exceeding the threshold with a predetermined value, a first interference wave power estimation unit configured to estimate interference wave power included in an OFDM symbol included in the received modulation wave on the basis of the number of samples that have been subjected to the replacement processing, and a demodulated data generator that demodulates the received modulation wave by executing demodulation processing of demodulating the received modulation wave that has been subjected to the replacement processing on the basis of the interference wave power.
    • 接收机包括解调器,其解调根据正交频分复用(OFDM)调制的调制波。 解调器包括干扰波检测器,当所接收的调制波的每个采样的接收功率超过阈值时,检测接收到的调制波包括干扰波,并且在检测时,执行以超过阈值替换超过阈值的接收信号的替换处理 第一干涉波功率估计单元,被配置为基于已经经过替换处理的采样数来估计包含在接收的调制波中的OFDM符号中的干扰波功率;以及解调数据发生器, 通过执行基于干扰波功率解调接收到的经过替换处理的调制波的解调处理来接收调制波。
    • 6. 发明授权
    • Receiver, integrated circuit, receiving method, and program
    • 接收器,集成电路,接收方式和程序
    • US08731037B2
    • 2014-05-20
    • US13809921
    • 2012-05-17
    • Mariko MurakamiYoshinobu Matsumura
    • Mariko MurakamiYoshinobu Matsumura
    • H04B3/46H04B17/00
    • H04L43/0823H04J11/0036H04L1/0047H04L5/005H04L25/022H04L25/0232H04L27/2662H04L27/2691H04L2025/03414H04N17/004
    • A receiver includes a demodulator that demodulates a modulation wave modulated according to orthogonal frequency division multiplexing (OFDM). The demodulator includes an interference wave detector that detects that received modulation wave includes interference wave when received power of each sample of the received modulation wave exceeds a threshold, and upon the detection, executes replacement processing of replacing a received signal exceeding the threshold with a predetermined value, a first interference wave power estimation unit configured to estimate interference wave power included in an OFDM symbol included in the received modulation wave on the basis of the number of samples that have been subjected to the replacement processing, and a demodulated data generator that demodulates the received modulation wave by executing demodulation processing of demodulating the received modulation wave that has been subjected to the replacement processing on the basis of the interference wave power.
    • 接收机包括解调器,其解调根据正交频分复用(OFDM)调制的调制波。 解调器包括干扰波检测器,当所接收的调制波的每个采样的接收功率超过阈值时,检测接收到的调制波包括干扰波,并且在检测时,执行以超过阈值替换超过阈值的接收信号的替换处理 第一干涉波功率估计单元,被配置为基于已经经过替换处理的采样数来估计包含在接收的调制波中的OFDM符号中的干扰波功率;以及解调数据发生器, 通过执行基于干扰波功率解调接收到的经过替换处理的调制波的解调处理来接收调制波。
    • 8. 发明申请
    • OFDM RECEPTION DEVICE, OFDM RECEPTION CIRCUIT, OFDM RECEPTION METHOD, AND OFDM RECEPTION PROGRAM
    • OFDM接收设备,OFDM接收电路,OFDM接收方法和OFDM接收程序
    • US20120207250A1
    • 2012-08-16
    • US13503749
    • 2011-09-15
    • Yoshinobu Matsumura
    • Yoshinobu Matsumura
    • H04L27/28
    • H04L27/2607H04L27/265
    • An OFDM reception device receives an OFDM symbol that includes a signal for a useful symbol duration generated based on transmission information and a signal for a guard interval duration generated based on the signal for the useful symbol duration. The OFDM reception device includes a first orthogonal transformation unit configured to perform an orthogonal transformation on the signal for the useful symbol duration, a second orthogonal transformation unit configured to perform an orthogonal transformation on the signal for the guard interval duration, and a decoding unit configured to decode the OFDM symbol in accordance with results of the orthogonal transformation by the first orthogonal transformation unit and results of the orthogonal transformation by the second orthogonal transformation unit.
    • OFDM接收设备接收包括用于基于传输信息生成的有用符号持续时间的信号的OFDM符号,以及基于有用符号持续时间的信号产生的用于保护间隔持续时间的信号。 OFDM接收装置包括:第一正交变换单元,被配置为对有用符号持续时间的信号执行正交变换;第二正交变换单元,被配置为对保护间隔持续时间的信号执行正交变换;以及解码单元, 根据第一正交变换单元的正交变换结果和第二正交变换单位的正交变换结果对OFDM符号进行解码。