Rainer Stuhlberger

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One of the key trends in the design of radio receivers and other wireless devices is to shift more and more of the transceiver functionalities to digital signal processing (DSP). At the same time, the demands on the remaining analog circuits are greatly increased, especially with lower power supplies and nanoscale technology effects such as variability.(More)
This paper presents a fully-integrated performance-on-demand receiver front-end for GSM/EDGE/W-CDMA/CDMA2000 multi-mode cellular applications. The designpsilas noise figure, linearity and selectivity are adapted depending on current environmental conditions and the selected standard to guarantee lowest overall power consumption. The single-chip zero-IF(More)
A flexible, reconfigurable receiver architecture that extends the direct conversion architecture is presented. The receiver structure is based on high dynamic range/lowpower Σ∆ analog-to-digital converters (ADC) and digital signal processing functions implemented locally on the radio frequency integrated circuit (RFIC). This relaxes requirements for the(More)
This paper introduces a combined GNSS/UMTS receiver architecture. After a review of the state-of-the-art, a configurable GNSS/UMTS architecture is proposed. The investigated concept is based on a reconfigurable receive chain to prevent duplication of hardware, which will result in considerably lower costs. The biggest challenge in the design of Galileo(More)
– The software-defined-radio concept received increasing attention due to necessity of multi-mode/multi-system capable terminals for next generation communication systems. This paper summarizes the requirements of a multi-mode compliant digital-front-end (DFE) and describes concepts for cellular terminal implementations on silicon. A partitioning is(More)