  This study focuses on developing an experimental system for estimating
communication channels in a multi-robot mobile system using software-defined
radio (SDR) devices. The system consists of two mobile robots programmed for
two scenarios: one where the robot remains stationary and another where it
follows a predefined trajectory. Communication within the system is conducted
through orthogonal frequency-division multiplexing (OFDM) to mitigate the
effects of multipath propagation in indoor environments. The system's
performance is evaluated using the bit error rate (BER). Connections related to
robot motion and communication are implemented using Raspberry Pi 3 and BladeRF
x115, respectively. The least squares (LS) technique is employed to estimate
the channel with a bit error rate of approximately 10^(-2).
