PPT Slide
S-UMTS Terminal : envisaged architecture
A digital predistortion in the TX path is envisaged, performed by the loop “DSP-Up conversion path-Antenna set-Feedback”. The same feedback line, shown in figure, is used to perform a dinamic adjustment, to improve the linearity of the receiving section.
The Control Processor manages the exchange of data/addressing information between the DSP and the ASIC
The core of the system is the DSP, responsible of most of the baseband processing; the support of dedicated ASICs for particular heavy computational operations like rake-decoding/Interference mitigation can be necessary depending on DSP computational power. In this last case, a dedicated bus between the DSP and the ASIC could also be needed, or the ASIC should directly communicate with the AD/DA converters and then with the DSP.