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Digital processing type transceiver for quadrature multiplex signal

阅读:287发布:2022-09-02

专利汇可以提供Digital processing type transceiver for quadrature multiplex signal专利检索,专利查询,专利分析的服务。并且PURPOSE:To realize the process to obtain the quadrature multiplex QAM signal from a plurality of complex base band PAM signals, through the use of digital signal processing such as offset discrete Fourier transformation and complex band pass filter. CONSTITUTION:The real sampling values X0...X2L-1 every T seconds inputted terminal 12 are converted into complex sampling value series every T/2 seconds at the preprocessing circuit 13. The complex sampling value series thus converted is inputted to the 1st N/2 point offset discrete Fourier transformer 16, and the first half N/4 point data re inputted as they are to the 2nd N/2 point offset discrete Fouriert transformer 17 and the latter half N/4 point data are inverted at the polarity inversion circuit 15- and then inputted to the converter 17. The 1st polyphase circuit 20 consists of N/2 sets of complex band noncirculation type digital filters G- and the output is obtained at the output terminal 22. The polyphase circuit 21 has the same architecture as the circuit 20.,下面是Digital processing type transceiver for quadrature multiplex signal专利的具体信息内容。

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