  Recent performance analysis of dual-function radar communications (DFRC)
systems, which embed information using phase shift keying (PSK) into
multiple-input multiple-output (MIMO) frequency hopping (FH) radar pulses,
shows promising results for addressing spectrum sharing issues between radar
and communications. However, the problem of decoding information at the
communication receiver remains challenging, since the DFRC transmitter is
typically assumed to transmit only information embedded radar waveforms and not
the training sequence. We propose a novel method for decoding information at
the communication receiver without using training data, which is implemented
using a software-defined radio (SDR). The performance of the SDR implementation
is examined in terms of bit error rate (BER) as a function of signal-to-noise
ratio (SNR) for differential binary and quadrature phase shift keying
modulation schemes and compared with the BER versus SNR obtained with numerical
simulations.
