Shortwave information channel modulation-demodulation module based on OMAP chip and Ethernet bus
A modulation and demodulation module and modulation and demodulation technology, applied in the field of shortwave channel modulation and demodulation modules, can solve the problems of inconvenient software transplantation and different languages, and achieve the effects of fast data transmission speed, standard slots and good communication reliability
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[0014] In order to better understand the technical content of the present invention, specific embodiments are given together with the attached drawings for description as follows.
[0015] Such as figure 1 As shown, according to a preferred embodiment of the present invention, the shortwave channel modulation and demodulation module based on OMAP chip and Ethernet bus includes OMAP3530 control chip, FPGA modem chip, A / D converter, up-conversion processing chip, down-conversion Processing chip and Ethernet interface chip, wherein: OMAP3530 control chip reads baseband audio data signals and external control commands from the Ethernet bus through the Ethernet interface chip, and returns the status information to the Ethernet bus; the A / D converter One channel of short-wave radio frequency signal is sampled and the sampled digital signal is sent to the aforementioned down-conversion processing chip; after the down-conversion processing chip performs digital down-conversion process...
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