Title: Design and realisation of a low-power, high-concurrency SDR-based communication system at 230 MHz

Authors: Li Shang; Jiaju Zhang; Xianglong Meng; Wenjiang Pei; Junpeng Zhang

Addresses: State Grid Hebei Electric Power Co., Ltd., Information and Telecommunication Branch, Fuhua Street, Yuhua District, Shijiazhuang City, Hebei Province, 100000, China ' State Grid Hebei Electric Power Co., Ltd., Information and Telecommunication Branch, Fuhua Street, Yuhua District, Shijiazhuang City, Hebei Province, 100000, China ' State Grid Hebei Electric Power Co., Ltd., Information and Telecommunication Branch, Fuhua Street, Yuhua District, Shijiazhuang City, Hebei Province, 100000, China ' School of Information Science and Engineering, Southeast University, South Suzhong Avenue, Jiangning District, No. 2 Sipailou, Nanjing, 210096, China ' State Grid Hebei Electric Power Co., Ltd., Information and Telecommunication Branch, Fuhua Street, Yuhua District, Shijiazhuang City, Hebei Province, 100000, China

Abstract: Software-defined radio (SDR) devices have significantly advanced communication networks by reducing the cost and development time of radio frequency (RF) designs. Their programmability enhances system capabilities, making them valuable for both research and application-driven tasks. With the growth of the Internet of Things (IoT), the need to validate, process, and decode numerous incoming signals has increased - an area where SDRs are highly effective. This paper explores the integration of surface acoustic wave (SAW) devices and SDRs for wireless, in situ sensor response measurements. SAW devices are employed for time delay analysis, while SDRs capture signal data across the 218-230 MHz range using 1921 samples. The inverse Fourier transform is applied to convert frequency-domain data to the time domain. Signal quality is evaluated against measurements from a commercial vector network analyser (VNA). Using a LimeSDR Mini, achieves reliable time delay detection with results closely matching those of the VNA.

Keywords: power amplifier (PA); local oscillator (LO); radio frequency (RF); high frequency (HF); AOA; angle of attack; FIR; finite impulse response.

DOI: 10.1504/IJMNDI.2026.152393

International Journal of Mobile Network Design and Innovation, 2026 Vol.12 No.1, pp.11 - 19

Received: 16 May 2025
Accepted: 07 Aug 2025
Published online: 18 Mar 2026 *

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