부산대학교 도서관

In recent decades, signal reconstruction schemes play an important role in rebuilding the signal again from incomplete information about the original one. In this article, we consider a novel technique for transmitting a signal from its bandpass spectral information. A new recovery algorithm is also used to reconstruct most of baseband signal’s energy despite receiving a window of its spectrum. This algorithm is tested for many types of signals with different data rates. It is also applied to a human speech signal and showed a good reconstruction status. The performance of the algorithm is evaluated in terms of the normalized mean square error (NMSE) in noiseless and noisy channels. The proposed technique shows its capability to send any signal over a bandlimited channel and reconstruct it again without any need to send most of its spectral power compared to the conventional schemes, thus more bandwidths can be saved and the bandwidth usage can be optimized. However, many problems have been introduced and resolved during the recovery process. The algorithm showed an acceptable recovery status when tested in noisy channels. The proposed scheme may find many applications in high data-rate communications, pulsed radar systems, next generation networking, and OFDM-based wireless communication