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    • 4. 发明专利
    • Signal processing device and signal processing method
    • 信号处理装置和信号处理方法
    • JP2014050056A
    • 2014-03-17
    • JP2012193614
    • 2012-09-03
    • Fujitsu Ltd富士通株式会社
    • SUGITANI JUICHIKATAYAMA HIDESATOSHIODA KAZUNARINAKAJIMA HISAOHOSHIDA GOJI
    • H04B10/61H04B3/04H04J14/00H04J14/04H04J14/06
    • H04B10/616H04L25/03038H04L25/14H04L27/223H04L2025/0342H04L2025/03477H04L2025/03687
    • PROBLEM TO BE SOLVED: To restrain degradation in output characteristic when only a fewer number of update control circuits than arithmetic execution circuits can be installed.SOLUTION: A signal processing circuit has P adaptive equalization filters, N individual arithmetic determination units, and an update unit. The adaptive equalization filters execute a first arithmetic process on respective input signals and output an output signal. The individual arithmetic determination units determine, for each arithmetic execution unit, a second arithmetic process necessary to reduce a difference between the value of an output signal derived by the first arithmetic process and a target value for the output signal. The update unit determines a third arithmetic process on the basis of the second arithmetic process for each arithmetic execution unit determined by the individual arithmetic determination units, and updates the arithmetic process of each arithmetic execution unit to the third arithmetic process. Each of the K arithmetic execution units has their second arithmetic process determined by either one of the N individual arithmetic determination units, and each of the N individual arithmetic determination units sequentially determines a second arithmetic process corresponding to each of the arithmetic execution units in a time division manner.
    • 要解决的问题:为了抑制只有较少数量的更新控制电路而不是算术执行电路,输出特性的降低。解决方案:信号处理电路具有P个自适应均衡滤波器,N个个别算术确定单元和更新单元 。 自适应均衡滤波器对各个输入信号执行第一运算处理并输出输出信号。 各个算术确定单元为每个算术执行单元确定减少由第一运算处理导出的输出信号的值与输出信号的目标值之间的差异所必需的第二运算处理。 更新单元基于由各个算术确定单元确定的每个算术执行单元的第二算术处理来确定第三算术处理,并且将每个算术执行单元的算术处理更新为第三算术处理。 每个K个算术执行单元具有由N个个别算术确定单元中的任一个确定的第二算术处理,并且N个个体算术确定单元中的每一个依次确定与一个算术执行单元中的每一个对应的第二算术处理 分割方式。