The tuner selects a frequency band around a target center frequency and demodulates it to baseband. The E4000 Elonics chip is a digitally controlled tuner. This feature enables this device to be used as an inexpensive ”Software Defined Radio”. Last February, a V4L/DVB kernel developer, Antii Palosaari, discovered that there is a device mode in which raw samples can be captured and transferred to a host computer. This dongle was originally made to receive and decode the European standard digital television. The rest of the processing is done solely in software.Įach student in the class will/or already gotten a TVB-T USB dongle based on the Realtek RTL2832U chip. It consists of an RF front-end followed by and analog- to-digital converter which provides samples to a host computer. A software defined radio system is a system in which the components are implemented in software instead of the traditional way of hardware implementation.
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