ADC and DSP challenges in the development of software radio base stations

TLDR

Software‑defined radios for third‑generation PCS systems face significant technical challenges, particularly in analog‑to‑digital conversion and digital signal processing, which often lack the advanced hardware required for demanding telecommunications services. This study examines ADC and DSP challenges in software radio base stations, aiming to identify critical requirements and propose enabling schemes to meet them. The authors analyze ADC/DSP requirements, propose enabling schemes, and discuss new structures that support physically distributed base stations.

Abstract

The need for software-defined radios raises a number of technical challenges, which play a significant role in the development of third-generation personal communications systems (PCS). Some of the most important technical challenges deal with analog-to-digital conversion and digital signal processing technologies, which, in many cases, cannot provide the advanced hardware needed to support the demanding PCS telecommunications services. We discuss these two technical challenges, focusing primarily on base station radio systems. We first identify the most important requirements for ADC and DSP technologies, and we then extensively discuss and/or propose enabling schemes that could relax these requirements and aid the implementation of software radio base stations. Furthermore, we discuss new structures that can support the development of physically distributed base stations.