Channel Sounder in Indoor Environment with Multipath Fading using Software Defined Radio

In wireless communication systems, it is essential to properly describe the radio channel to improve performance and ensure reliable transmission. This paper thoroughly examines how Software Defined Radio (SDR) technology was used to build and apply a channel sounder in an indoor setting. The goal is to record the features of multipath fading and figure out how different indoor propagation effects affect wireless communication systems. The proposed channel sounder takes advantage of SDR's flexibility and ability to be programmed to send and receive signals efficiently and to use advanced signal processing methods to estimate the channel. By taking advantage of the broad nature of the signal being transmitted, the channel sounder can record the time-varying impulse response of the channel, including the multipath components and fading that comes with them. The results show that the channel sounder can correctly describe the indoor radio channel and give important information about how to design and improve wireless communication systems inside. We can capture many parameters in wireless communication, such as spectrum frequency, time domain analysis, constellation diagram, CCDF, Bandwidth Occupied, and Distortion measurement. © 2023 IEEE.