@article{M108E910D,
title = "On the Analysis of Software-Defined Radio with RISC-V Vector Architecture",
journal = "The Journal of Korean Institute of Communications and Information Sciences",
year = "2025",
issn = "1226-4717",
doi = "10.7840/kics.2025.50.11.1780",
author = "Seungsik Moon, Hyeongtaek Lee",
keywords = "Software-defined radio, RISC-V, vector extension, maximum-ratio transmission",
abstract = "Software-defined radio (SDR) architecture is a baseband architecture based on general-purpose processors, offering greater flexibility than the conventional baseband architecture by allowing various algorithms to be processed in software-level. While SDRs provide a flexible alternative to traditional baseband architectures, most of them are built on conventional x86 or ARM-based processors and thus lack the customizability needed for optimal performance in wireless communication. This paper analyzes the performance of an SDR architecture implemented on a vector-extended RISC-V core architecture. We designed a vector-extended RISC-V core architecture by adding various vector-level operators to the open-source RISC-V core architecture.
Furthermore, we developed an optimized computing kernel for the maximum-ratio transmission (MRT) precoding function using the vector-level instructions. Simulation results showed that the vector-extended SDR architecture can achieve up to 17.1 times higher throughput than the conventional SDR architecture, validating the viability and feasibility of the SDR architecture with the vector-extended RISC-V core architecture."
}