Performance Improvement by Changing Modulation Methods for Software Defined Radios

TL;DR

This paper presents an adaptive modulation switching technique for Software Defined Radios to optimize wireless network throughput under varying channel conditions, demonstrating robustness and efficiency with minimal processing overhead.

Contribution

It introduces an automatic modulation switching method for SDRs that enhances throughput and adaptively responds to channel variations, maintaining real-time performance.

Findings

SNR threshold of 5dB identified for optimal switching

Method improves throughput under AWGN channel conditions

Maintains real-time operation with low processing overhead

Abstract

This paper describes an automatic switching of modulation method to reconfigure transceivers of Software Defined Radio (SDR) based wireless communication system. The programmable architecture of Software Radio promotes a flexible implementation of modulation methods. This flexibility also translates into adaptively, which is used here to optimize the throughput of a wireless network, operating under varying channel conditions. It is robust and efficient with processing time overhead that still allows the SDR to maintain its real-time operating objectives. This technique is studied for digital wireless communication systems. Tests and simulations using an AWGN channel show that the SNR threshold is 5dB for the case study.