| 摘要 |
A digital front end transceiver system (300) for a software radio system comprising: a transmitter module (310) adapted to digitally interpolate, up- convert and combine baseband digital in-phase (I) and quadrature (Q) channel s to form a digital intermediate frequency (IF) IQ signal for conversion to an analogue IF IQ signal for transmission; and a receiver module (320) adapt ed to separate, down- convert and decimate a received digital IF IQ signal i nto baseband digital I and Q channels. The transmitter and receiver modules use a common fixed sampling and IF conversion rate fs, where fs is a quadrup le of the bandwidth of the baseband signal, such that the system can be appl ied in a software radio system for a wireless communication application havi ng any baseband bandwith by selecting the fixed sampling rate based on the b aseband bandwidth.
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