公开(公告)号：EP1916773A4

公开(公告)日：2010-01-27

申请号：EP05772581

申请日：2005-08-19

申请人： FUJITSU LTD

发明人： SHAKO HIDEHARU ,  FUNYU YASUHITO ,  OHBA TAKESHI

IPC分类号： H03M1/12 ,  H04B1/04 ,  H04L25/06 ,  H04L27/36

CPC分类号： H04L25/061 ,  H03M1/1019 ,  H03M1/66 ,  H04B1/30 ,  H04L25/06 ,  H04L27/364

公开(公告)号：EP1858158A4

公开(公告)日：2009-05-20

申请号：EP05720400

申请日：2005-03-09

申请人： FUJITSU LTD

发明人： SHAKO HIDEHARU ,  FUNYU YASUHITO ,  OHBA TAKESHI

IPC分类号： H03F1/32 ,  H04B1/04

CPC分类号： H03F3/24 ,  H03F1/3247 ,  H03F2200/204 ,  H03F2201/3233 ,  H04B1/0475

摘要： A strain compensation device for avoiding a deterioration in temporary strain characteristics by averaging the number of references to a storage unit. The strain compensation device comprises a pre-distortion unit for subjecting a transmission signal to a strain compensation with a strain compensation coefficient, a strain compensation operation unit for operating the strain compensation coefficient on the basis of a transmission signal before the strain compensation and a feedback signal to be fed back from the output side of a strain device, an address creation circuit for creating an address corresponding to the transmission signal, and the storage unit for updating and storing the operated strain compensation coefficient into the created address. The address creation circuit creates an address corresponding to the transmission signal by multiplying the power of the transmission signal by a predetermined coefficient, and varies the predetermined coefficient.

公开(公告)号：EP1914884A4

公开(公告)日：2008-10-29

申请号：EP05767437

申请日：2005-07-29

申请人： FUJITSU LTD

发明人： OHBA TAKESHI ,  FUNYU YASUHITO ,  SHAKO HIDEHARU

IPC分类号： H03F1/32

CPC分类号： H03F1/3247 ,  H03F1/3294 ,  H03F2201/3233

摘要： In a delay regulating device for a feedback signal and a reference signal of an adaptive predistorter type distortion compensation device, delay regulation is performed by using a delay circuit performing delay regulation in a clock unit and a delay filter performing delay regulation in a tap unit smaller than the clock unit. Moreover, the delay regulation is performed so as to obtain the maximum value of the correlation value and the minimum value of the error signal. In this case, firstly, the delay circuit based on the clock unit is used to control the delay amount of the reference signal so as to obtain the maximum value of the correlation value. Next, the delay filter is used to control the delay amount of the feedback signal so as to obtain the maximum value of the correlation value. At this moment, phase adjustment of the reference signal and the feedback signal is performed. The delay amount of the feedback signal is regulated so as to minimize the error signal by using the delay filter, thereby terminating the delay regulation.

摘要翻译： 在用于自适应预失真器型失真补偿设备的反馈信号和参考信号的延迟调节设备中，通过使用执行时钟单元中的延迟调节的延迟电路和执行延迟调节的延迟调节来执行延迟调节， 比时钟单元。 而且，执行延迟调节以便获得相关值的最大值和误差信号的最小值。 在这种情况下，首先，基于时钟单元的延迟电路用于控制参考信号的延迟量，以获得相关值的最大值。 接下来，使用延迟滤波器来控制反馈信号的延迟量，以获得相关值的最大值。 此时，执行参考信号和反馈信号的相位调整。 通过使用延迟滤波器来调节反馈信号的延迟量以使误差信号最小化，由此终止延迟调节。