A Practical Framework to Specify the Prototype Filters for the Analysis of Frequency Stacked Sub-bands

Frequency stacking in the analog domain is used to replace multiple narrowband ADCs with a wideband ADC, supporting multiple antenna elements for digital satellite beamforming. This analog front end provides a cost-effective solution by offering a common broadband digital interface to the onboard processor, which can be configured for multiple satellite missions. This paper is on specifying the prototype filters to analyse frequency-stacked mobile sub-bands in the digital domain. The paper further presents results and observations that demonstrates the effectiveness of this specification for a given mobile narrowband communication scenario. Index Terms—Satellite Communication Systems, Digital Signal Processing, Analog-to-Digital Convertor.