Spectral sensing ultra wideband signals using a down-converting channelized receiver

Abstract

The growing complexities associated with spectral sharing dictate that more robust spectral sensing techniques are required to permit reliable channel assessment. Expanding upon previous channelized receiver work, this work employs down-conversion and filtering prior to A/D conversion such that practical limitations of A/D conversion are considered. Signal detection results for the down-converting channelized receiver are shown to be consistent with previous results, i.e., the somewhat ``featureless'' spectral characteristics of UWB signals dictate that temporal-based processing techniques yield best detection results relative to spectral-based techniques.

UWB Signal Detection Based on Wavelet Packet Decomposition

“…B.D. Gronholz [4] and Willie H.Mims [6] applied the architecture of channelized processing to detect the UWB signal and direct spread sequence signal (DSSS). They proposed different processing methods which are called temporal-temporal matrix (TTM) processing, cross temporal matrix (CTM) processing, spectral-spectral matrix (SSM) processing and cross spectral matrix (CSM) processing.…”