Blind and Efficient Serial Search Strategy for Ultrawideband Signal Initial Acquisition

A two-stage acquisition scheme based on multiple correlator outputs for UWB signals

“…Consequently, a rapid acquisition is one of the most important technical issues in UWB systems [2], for which several schemes have been investigated in the literature [3,4,5,6,7]. In [3], acquisition schemes with various search methods have been proposed with the mean acquisition time derived analytically in a noise-free environment.…”

“…In [4], a fast acquisition scheme with the permutation search method has been introduced, and [5] has analyzed the schemes in [3] with the tappeddelay-line and IEEE 802.15.3a channel models. A serial search acquisition scheme using specific search spacing based on Fibonacci sequence has been considered in [6]. In [7], randomized search strategies for UWB signal acquisition have been proposed.…”

UWB acquisition based on combining multiple correlator outputs

“…In UWB systems, the timing information of the received signal must first be acquired prior to data demodulation, and thus, a rapid acquisition is one of the important technical issues in UWB systems [4], [5], and for which several schemes have been investigated [6]- [9].…”

“…Ramachandran and Roy [8] analyzed the schemes of [6] with the tappeddelay-line channel and IEEE 802.15.3a channel models, and Arias-de-Reyna and Acha-Catalina [9] proposed a new serial search acquisition scheme using specific search spacing based on Fibonacci sequence. These conventional schemes use a single correlator output as the decision variable during the detection process at each search step; however, which is not efficient considering the fact that the signal energy spreads over multiple correlator outputs due to the rich multipath of UWB channels, and thus, a single correlator output has only a portion of the signal energy.…”

A Novel Two-Stage Detection Scheme for UWB Signal Acquisition

“…Ramachandran and Roy [8] analyzed the schemes of [6] with the tapped-delay-line channel and IEEE 802.15.3a channel models, and Arias-de-Reyna and Acha-Catalina [9] proposed a new serial search acquisition scheme using specific search spacing based on Fibonacci sequence. These conventional schemes use a single correlator output as the decision variable during the detection process at each search step; however, which is not efficient considering the fact that the signal energy spreads over multiple correlator outputs due to the rich multipath of UWB channels, and thus, a single correlator output has only a portion of the signal energy.…”