  We consider receiver synchronization in the non-continguous orthogonal
frequency division multiplexing (NC-OFDM)-based radio system in the presence of
in-band interfering signal, which occupies the frequency-band between blocks of
subcarriers (SCs) used by this system, i.e. in-band of NC-OFDM receiver
spectrum range. This paper proposes a novel preamble-based synchronization
algorithm for estimation of the time and frequency offset based on the received
signal cross-correlation with the reference preamble. Contrary to the existing
algorithms, it is robust against in-band interference including narrowband
interference at the cost of increased complexity. Moreover, in the
interference-free system, the probability of frame synchronization error is
improved in comparison to all simulated algorithms.
