资 源 简 介
The GC5328 is a lower-power version of the GC5322 wideband digital predistorTIon transmit processor. The GC5328 includes a digital upconverter (DUC) block, a crest factor reducTIon (CFR) block, a digital predistorTIon (DPD) block, feedback (FB) block, and capture buffer (CB) blocks.
The GC5328 GPP block receives the interleaved IQ data from the baseband input. The individual IQ channels are gain-adjusted in the GPP and routed to the DUC. The GPP and DUC can be bypassed to input a combined IQ signal. The DUC provides three stages of interpolaTIon and a complex mixer. There are two DUC blocks. The output from the DUC blocks is combined in the sum chain. Each of the 1 to 12 DUC channels can be summed, and the composite signal can be scaled.
