Results 21 to 30 of about 24,580 (172)

Localization and time synchronization in wireless sensor networks: a unified approach [PDF]

open access: yes, 2008
Localization and synchronization are two important issues in communication systems and wireless sensor networks. These two problems are addressed in many applications, and share many aspects in common.
Wu, YC, Zheng, J
core   +1 more source

Wideband DOA Estimation via Sparse Bayesian Learning over a Khatri-Rao Dictionary [PDF]

open access: yes, 2015
This paper deals with the wideband direction-of-arrival (DOA) estimation by exploiting the multiple measurement vectors (MMV) based sparse Bayesian learning (SBL) framework.
Naichang Yuan, Ning Tai, Yujian Pan
core   +2 more sources

Information-theoretic analysis of Hierarchical Temporal Memory-Spatial Pooler algorithm with a new upper bound for the standard information bottleneck method

open access: yesFrontiers in Computational Neuroscience, 2023
Hierarchical Temporal Memory (HTM) is an unsupervised algorithm in machine learning. It models several fundamental neocortical computational principles.
Shiva Sanati   +2 more
doaj   +1 more source

Bounds on Distance Estimation via Diffusive Molecular Communication

open access: yes, 2014
This paper studies distance estimation for diffusive molecular communication. The Cramer-Rao lower bound on the variance of the distance estimation error is derived.
Cheung, Karen C.   +2 more
core   +1 more source

Spectral unmixing of Multispectral Lidar signals [PDF]

open access: yes, 2015
In this paper, we present a Bayesian approach for spectral unmixing of multispectral Lidar (MSL) data associated with surface reflection from targeted surfaces composed of several known materials.
Altmann, Yoann   +2 more
core   +2 more sources

Cramer-Rao Lower Bound and Information Geometry

open access: yes, 2013
This article focuses on an important piece of work of the world renowned Indian statistician, Calyampudi Radhakrishna Rao. In 1945, C. R. Rao (25 years old then) published a pathbreaking paper, which had a profound impact on subsequent statistical ...
Nielsen, Frank
core   +1 more source

Comments on "Timing Estimation and Resynchronization for Amplify-and-Forward Communication Systems [PDF]

open access: yes, 2011
This correspondence first shows that the Cramer- Rao lower bound (CRLB) derivations in the above paper are incorrect. In addition, contrary to the claims in the above paper, the assumptions of perfect timing offset estimation and matched-filtering at the
Blostein, Steven D., Mehrpouyan, Hani
core   +1 more source

Blind SNR estimation based on cyclostationarity

open access: yesTongxin xuebao, 2006
Upsampling and shaping filtering introduce the cyclostationarity of transmit signals. Based on the cyclosta-tionary statistics of signals, a blind SNR estimator in AWGN channel was proposed.
HUA Meng, ZHU Jin-kang, GONG Ming
doaj   +2 more sources

Frequency estimator by combination of phase difference method and interpolation algorithm

open access: yesJournal of Algorithms & Computational Technology, 2019
In the traditional time-shifting based phase difference method, considerable errors may be introduced by wrapped phase problem as long as translation coefficient tends to one even in a small-scale turbulence noise.
Haitao Xu   +4 more
doaj   +1 more source

On stability of generalized phase retrieval and generalized affine phase retrieval

open access: yesJournal of Inequalities and Applications, 2019
In this paper, we consider the stability of intensity measurement mappings corresponding to generalized phase retrieval and generalized affine phase retrieval in the real case. First, we show the bi-Lipschitz property on measurements of noiseless signals.
Zhitao Zhuang
doaj   +1 more source

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