Results 41 to 50 of about 1,693,030 (143)

An Improved Multiple-Toeplitz Matrices Reconstruction Algorithm for DOA Estimation of Coherent Signals [PDF]

Radioengineering, 2021
The Toeplitz matrix reconstruction algorithms exploit the row vector of an array output covariance matrix to reconstruct Toeplitz matrix, which provide the direction-of-arrival (DOA) estimation of coherent signals.
B. B. Qi, W. Li
doaj  

Differential Coherent Code Acquisition in the Multiple Transmit/Receive Antenna Aided DS-CDMA Downlink

, 2006
In this contribution we investigate both differentially coherent and noncoherent code acquisition schemes in the multiple transmit/receive antenna aided DS-CDMA downlink, when communicating over uncorrelated Rayleigh channels.
Won, S-H., Hanzo, L.
core   +1 more source

Fast TDOA and FDOA Estimation for Coherent Pulse Signals

International Journal of Antennas and Propagation, 2022
Time difference of arrival (TDOA) and frequency difference of arrival (FDOA) have been widely used for localizing temporally continuous signals passively.
Yan Liu, Fucheng Guo
doaj   +1 more source

Optical Phase Conjugation Using Nonlinear SOA for Nonlinearity and Dispersion Compensation of Coherent Multi-Carrier Lightwave Systems

IEEE Access, 2021
We study the use of nonlinear semiconductor optical amplifier (SOA) for generating optical phase conjugate towards compensation of distortions in short distance optical fiber transmission due to Kerr nonlinearity and chromatic dispersion in coherent ...
Lakshmi Narayanan Venkatasubramani, Aneesh Sobhanan, Anirudh Vijay, R. David Koilpillai, Deepa Venkitesh   +4 more
doaj   +1 more source

Novel Direction Of Arrival Estimation Method Based on Coherent Accumulation Matrix Reconstruction

Leida xuebao, 2015
Based on coherent accumulation matrix reconstruction, a novel Direction Of Arrival (DOA) estimation decorrelation method of coherent signals is proposed using a small sample.
Li Lei, Li Guo-lin, Liu Run-jie
doaj   +1 more source

A Novel Method of Radar Emitter Identification Based on the Coherent Feature

Applied Sciences, 2020
To deal with the problem of reliability degradation of radar emitter identification (REID) based on the traditional five parameters in a complex electromagnetic environment, a new feature extraction method based on the autocorrelation function of ...
Jian Xue, Lan Tang, Xinggan Zhang, Lin Jin   +3 more
doaj   +1 more source

Low-complexity semi-coherent MIMO systems

, 2010
A semi-coherent multiple-input multiple-output (MIMO) scheme, which only requires one of its receivers to operate coherently while others can be non-coherent, is proposed.
Alias, Mohamad Yusoff, Chuah, Teong Chee, Halmi, Mohd Hairi, Teong Chee CHUAH, Mohd Hairi HALMI, Mohamad Yusoff ALIAS   +5 more
core   +1 more source

Research on direction of arrival estimation for mixed broadband signals

AIP Advances
In practical applications, the signals received by a hydrophone array include coherent and incoherent signals, while estimating the direction of arrival (DOA) of coherent or incoherent signals has been studied for simplicity with poor performance for a ...
Qiuqiu Pei, Changgeng Shuai, YuChen Sun
doaj   +1 more source

Non-coherent and Differentially Coherent code acquisition in MIMO assisted DS-CDMA multi-path downlink scenarios

, 2008
In this contribution we investigate both Differentially Coherent (DC) and Non-Coherent (NC) code acquisition schemes in the Multiple Input Multiple Output (MIMO)-aided Direct Sequence-Code Division Multiple Access (DS-CDMA) downlink, when communicating ...
Won, S, Hanzo, L.
core   +1 more source

Coherent Signals of the Bunched Beam at High Frequency

, 1991
This report talks about Coherent Signals of the Bunched Beam at High ...
J., Wei
core   +1 more source