公开(公告)号：US5903823A

公开(公告)日：1999-05-11

申请号：US617269

申请日：1996-03-18

申请人： Yukihiro Moriyama ,  Yoshiya Ohsaki

发明人： Yukihiro Moriyama ,  Yoshiya Ohsaki

IPC分类号： H01Q3/26 ,  H01Q11/12 ,  H03C3/40 ,  H04B1/04 ,  H04L27/36

CPC分类号： H04L27/368 ,  H01Q11/12 ,  H01Q3/267 ,  H03C3/406 ,  H04B2001/0425

摘要： Disclosed is a radio apparatus in which modulating signals (I and Q signals) from an arithmetic/control unit are converted to analog signals, which are then applied to an orthogonal modulator. A modulated wave for transmission, which has been produced by orthogonally modulating a reference carrier wave by the modulating signals, is demodulated by the orthogonal detector. The arithmetic/control unit compares the modulating signals and the demodulated signals and, based upon the comparison, updates distortion compensation coefficients and applies pre-distortion processing to the modulating signal using the distortion compensation coefficients. Leakage of carrier produced due offset of the orthogonal modulator is detected and the arithmetic/control unit adjusts the level of the modulating signals or shifts the phase of the reference carrier wave in such a manner that the leakage of carrier (offset) becomes zero.

摘要翻译： 公开了一种无线电设备，其中将来自算术/控制单元的调制信号（I和Q信号）转换为模拟信号，然后将其应用于正交调制器。 通过正交检波器解调通过调制信号正交调制参考载波产生的用于传输的调制波。 算术/控制单元比较调制信号和解调信号，并且基于比较，更新失真补偿系数，并使用失真补偿系数对调制信号应用预失真处理。 检测由正交调制器产生的载波产生的泄漏，并且算术/控制单元调整调制信号的电平或以使载波泄漏变为零的方式偏移参考载波的相位。

公开(公告)号：US20090138784A1

公开(公告)日：2009-05-28

申请号：US12269885

申请日：2008-11-13

申请人： Hiroki Tamura ,  Kazumi Doi ,  Yoshiya Ohsaki ,  Jun Endoh ,  Kanna Hara

发明人： Hiroki Tamura ,  Kazumi Doi ,  Yoshiya Ohsaki ,  Jun Endoh ,  Kanna Hara

IPC分类号： H03M13/05 ,  G06F11/10

CPC分类号： H03M13/353 ,  H03M13/373 ,  H03M13/6547 ,  H04L1/0009 ,  H04L1/0026 ,  H04L2001/0097

摘要： A coding method to code original data and transmit the coded data as a plurality of data packets to a destination, the coding method comprising: receiving packet loss information associated with the transmission of at least some of the plurality of data packets, the packet loss information including a lost packet restoration rate, a continuous packet loss rate and a packet loss rate of the packets transmitted to the decoding device; and generating an error-correcting redundant packet and inserting the error-correcting redundant packet in subsequent ones of the plurality of data packets for transmission to the destination based on the received packet loss information.

摘要翻译： 一种用于编码原始数据并将编码数据作为多个数据分组发送到目的地的编码方法，所述编码方法包括：接收与所述多个数据分组中的至少一些数据分组的传输相关联的分组丢失信息，所述分组丢失信息 包括传输到解码装置的分组丢失分组恢复率，连续分组丢失率和分组丢失率; 以及生成纠错冗余分组，并且根据所接收的分组丢失信息将纠错冗余分组插入到所述多个数据分组中的后续数据分组中以便发送到目的地。

公开(公告)号：US6081698A

公开(公告)日：2000-06-27

申请号：US192219

申请日：1998-11-16

申请人： Yukihiro Moriyama ,  Takeshi Takano ,  Yasuyuki Oishi ,  Yoshiya Ohsaki ,  Yuji Kaneko ,  Koji Takata ,  Masaru Kabashima

发明人： Yukihiro Moriyama ,  Takeshi Takano ,  Yasuyuki Oishi ,  Yoshiya Ohsaki ,  Yuji Kaneko ,  Koji Takata ,  Masaru Kabashima

IPC分类号： H01Q3/26 ,  H01Q11/12 ,  H03C3/40 ,  H04B1/04 ,  H04L27/36

CPC分类号： H04L27/368 ,  H01Q11/12 ,  H01Q3/267 ,  H03C3/406 ,  H04B2001/0425

摘要： Disclosed is a radio apparatus in which modulating signals (I, Q signals) from an arithmetic/control unit are converted to analog signals, which are then applied to an orthogonal modulator. A modulated wave for transmission, which has been produced by orthogonally modulating a reference carrier wave by the modulating signals, is demodulated by the orthogonal detector. The arithmetic/control unit compares the modulating signals and the demodulated signals and, based upon the comparison, updates distortion compensation coefficients and applies pre-distortion processing to the modulating signal using the distortion compensation coefficients. Leakage carrier produced due to offset of the orthogonal modulator is detected and the arithmetic/control unit adjusts the level of the modulating signals or shifts the phase of the reference carrier wave in such a manner that the leakage carrier (offset) becomes zero.

摘要翻译： 公开了一种无线电设备，其中将来自算术/控制单元的调制信号（I，Q信号）转换为模拟信号，然后将其应用于正交调制器。 通过正交检波器解调通过调制信号正交调制参考载波产生的用于传输的调制波。 算术/控制单元比较调制信号和解调信号，并且基于比较，更新失真补偿系数，并使用失真补偿系数对调制信号应用预失真处理。 检测由于正交调制器的偏移而产生的泄漏载波，并且算术/控制单元调节调制信号的电平或以使得泄漏载波（偏移）变为零的方式偏移参考载波的相位。