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Digital Signal Processing Research

Design of an Active 2nd-Order Polyphase Filter for Image Rejection

18. December 2018

Allgemein-EN DSP-en

An active 2ndorder band-pass polyphase filter for image rejection with a passband at the carrier frequency fc, stopband frequency at –fc and 40 dB/decade slope is depicted in the Figure. Applications include IF filtering of the I/Q phases, complex subsam ...

Linear Phase Design of Lattice Wave Digital Filters – EN

14. November 2018

Allgemein-EN DSP-en

Lattice Wave Digital Filters (LWDF) are a particular kind of Infinite Impulse Response (IIR) filters which exhibit excellent hardware implementation characteristics, since they are based on allpass filters with prescribed phase function. Moreover, it is k ...

Project MarKom: Maritime VHF Broadband Communication with Multiple Antenna Technology

14. November 2018

Allgemein-EN DSP-en

The new maritime mobile transmission standard in the VHF band is specified in the ITU-M2092 standard. In cooperation with the Institute for Communication and Navigation of the German Aerospace Center (DLR), parts of the terrestrial link were realized with ...