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Low‐clock‐speed time‐interleaved architecture for a polar delta–sigma modulator transmitter
Ist Teil von
ETRI journal, 2023-02, Vol.45 (1), p.150-162
Ort / Verlag
Electronics and Telecommunications Research Institute (ETRI)
Erscheinungsjahr
2023
Link zum Volltext
Quelle
EZB Electronic Journals Library
Beschreibungen/Notizen
The polar delta–sigma modulator (DSM) transmitter architecture exhibits good coding efficiency and can be used for software‐defined radio applications. However, the necessity of high clock speed is one of the major drawbacks of using this transmitter architecture. This study proposes a low‐complexity time‐interleaved architecture for the polar DSM transmitter baseband part to reduce the clock speed requirement of the polar DSM transmitter using an upsampling technique. Simulations show that using the proposed four‐branch time‐interleaved polar DSM transmitter baseband part, the clock speed requirement of the transmitter is reduced by four times without degrading the signal‐to‐noise‐and‐distortion ratio.