Results 261 to 270 of about 402,558 (283)

Spatial evolutionary spectrum for DOA estimation and blind signal separation

IEEE Transactions on Signal Processing, 2000
We combine the concepts of evolutionary spectrum and array processing. We present a cross-power stationary periodogram for both direction-of-arrival (DOA) estimation and blind separation of nonstationary signals. We model the nonstationary signals received by each array sensor as a sum of complex sinusoids with time-varying amplitudes. These magnitudes
Kayhan, A. Salim., Amin, Moeness G.
openaire   +1 more source

A New Frequency Spectrum Sensing Approach Based on Spatial Spectrum Estimation in OFDM System

2009 5th International Conference on Wireless Communications, Networking and Mobile Computing, 2009
This paper presents another look at the problem of frequency spectrum sensing based on energy detection in OFDM. OFDM is one of the most important techniques to improve the capacity of the channel in 3G and 4G. In order to detect the presence of the spectrum holes and utilize them efficiently withou causing interference to primary users in OFDM ...
Guan Nan Li, Wei Li, Song Xue, Ning Zhang   +3 more
openaire   +1 more source

A Method of MVDR Spatial Spectrum Estimation Based on Richardson Lucy

2022
For the problem of influence of background level on estimating target spatial azimuth distribution value, a method of MVDR spatial spectrum estimation based on Richardson-Lucy is proposed. The output results of MVDR spatial spectrum estimation method were deconvolution with point scattering function and Richardson-Lucy iterative method of image ...
Lan Qiu, Yuchen Xie
openaire   +1 more source

Cross-talk artifacts in spatial spectrum estimation with a sensor array

The Journal of the Acoustical Society of America, 1992
Cross-talk between output channels is a common problem that can occur in the wet-end or dry-end electronic cabling of a sensor array. This paper examines artifacts in spatial spectral estimates caused by cross-talk between sensor output channels. It is shown that cross-talk can result in spurious peaks in spatial spectral estimates, particularly for ...
Jeffrey Krolik, David Swingler
openaire   +1 more source

DOA Estimation and Localization Using Multi-Base Station Spatial Spectrum Fusion

ION GNSS+, The International Technical Meeting of the Satellite Division of The Institute of Navigation, 2017
From retail shopping, emergency services, location based services to disaster recovery accurate location technology will be prime localization experience. GPS assisted system for accurate location are available for outdoor, but indoors, where GPS fades, and presence of multipath, non-line-of-sight, and scattering environment yields unreliable position ...
Madhu Kumari Choudhary, Di He, Lav Dutta, Fei Wen, Peilin Liu, Wenxian Yu, Yi Zhang   +6 more
openaire   +1 more source

High resolution spatial spectrum estimation in a non-stationary environment

2002 14th International Conference on Digital Signal Processing Proceedings. DSP 2002 (Cat. No.02TH8628), 2003
The computation of time-bearing representations within the context of passive sonar is considered. A novel approach to dealing with sources whose relative bearing varies as a function of time is proposed. The methodology adopted is based on ideas borrowed from the field of time-frequency analysis.
openaire   +1 more source

Multi-BS Spatial Spectrum Fusion for 2-D DOA Estimation and Localization Using UCA in Massive MIMO System

IEEE Transactions on Instrumentation and Measurement, 2021
Di He, Xin Chen, Ling Pei
exaly  

Joint Spectrum, Carrier, and DOA Estimation With Beamforming MWC Sampling System

IEEE Transactions on Instrumentation and Measurement, 2022
Siyi Jiang, Ning Fu, Zhiliang Wei
exaly  

Single-Channel Spatial Spectrum Estimation Direction Finding by the Time-Modulated Linear Array

IEEE Antennas and Wireless Propagation Letters, 2021
Xingbang Jiang, Gang Ni, Chong He
exaly  

Robust Source Counting and DOA Estimation Using Spatial Pseudo-Spectrum and Convolutional Neural Network

IEEE/ACM Transactions on Audio Speech and Language Processing, 2020
Thi Ngoc Tho Nguyen, Woon-Seng Gan, Douglas L Jones   +2 more
exaly