专利名称：Receiving apparatus for spectrum spreading
and receiving method
发明人：KOMATSU MASAHIRO申请号：US6941898申请日：19980429公开号：US6181732B1公开日：20010130
摘要：A spectrum-spread signal is taken out by a mixer 11, a low pass filter 2 and asample hold circuit 3, codes for one period of spreading codes on a transmitting side ofthe spectrum-spread signal is multiplied by codes for one period of previously givenspreading codes on a receiving side and the summations of the multiplication are outputby means of a matched filter in a correlator 4, and a symbolic integration section 6inversely modulates known symbols of a symbol signal inversely spread at one chipinterval using theoretical values, and performs symbolic integration, and in a pseudocorrelation removing section 7, pseudo correlation is removed by subtracting thetheoretical values of the correlation values in order of magnitude of an amplitude and ina synchronization detecting section 5, timing when the amplitude becomes to bemaximum is detected as receiving timing.
申请人：NEC CORPORATION
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