Results 21 to 30 of about 13,086 (202)
Random Access in Massive MIMO by Exploiting Timing Offsets and Excess Antennas [PDF]
, 2018 Massive MIMO systems, where base stations are equipped with hundreds of antennas, are an attractive way to handle the rapid growth of data traffic. As the number of user equipments (UEs) increases, the initial access and handover in contemporary networks
D'Amico, Antonio A. +3 more
core +2 more sources
5G Positioning and Mapping with Diffuse Multipath [PDF]
, 2020 5G mmWave communication is useful for positioning due to the geometric connection between the propagation channel and the propagation environment. Channel estimation methods can exploit the resulting sparsity to estimate parameters(delay and angles) of ...
Kulmer, Josef +3 more
core +3 more sources
Sparse Array Angle Estimation Using Reduced-Dimension ESPRIT-MUSIC in MIMO Radar
The Scientific World Journal, 2013 Sparse linear arrays provide better performance than the filled linear arrays in terms of angle estimation and resolution with reduced size and low cost. However, they are subject to manifold ambiguity.
Chaozhu Zhang, Yucai Pang
doaj +1 more source
Sensors, 2017 In this paper, we focus on the problem of two-dimensional direction of arrival (2D-DOA) estimation for monostatic MIMO Radar with electromagnetic vector received sensors (MIMO-EMVSs) under the condition of gain and phase uncertainties (GPU) and mutual ...
Dong Zhang +4 more
doaj +1 more source
Approximate maximum likelihood estimation of two closely spaced sources [PDF]
, 2014 The performance of the majority of high resolution algorithms designed for either spectral analysis or Direction-of-Arrival (DoA) estimation drastically degrade when the amplitude sources are highly correlated or when the number of available snapshots is
Besson, Olivier +2 more
core +3 more sources
A Robust Direction of Arrival Estimation Method for Uniform Circular Array
Sensors, 2019 Estimating the Direction of Arrival (DOA) is a basic and crucial problem in array signal processing. The existing DOA methods fail to obtain reliable and accurate results when noise and reverberation occur in real applications. In this paper, an accurate
Zhengqin Xu +3 more
doaj +1 more source
Leida xuebao, 2015 The signal reconstruction algorithm with sub-Nyquist bandpass sampling in Pulse Position Modulation-Ultra Wide Band (PPM-UWB) signal processing is analyzed based on PPM-UWB signal demodulation.
Zou Ning +3 more
doaj +1 more source
Dynamic spatial-temporal propagation measurement and super-resolution channel characterisation at 5.2 GHz in a corridor environment [PDF]
, 2002 This paper presents the analysed results from a dynamic spatial-temporal measurement campaign conducted at 5.2 GHz in a corridor environment within a modern building.
Beach, MA, Nix, AR, Tan, CM
core +2 more sources
Accurate Ultra-Wideband Array Radar Imaging Using Four-Dimensional Unitary ESPRIT
IEEE Access, 2019 Adaptive signal processing techniques can estimate the directions of arrival (DOAs), ranges, and radial velocities of radar targets with high resolution when applied in the space, frequency, and time domains, respectively.
Kazushi Morimoto +2 more
doaj +1 more source
Superfast Line Spectral Estimation [PDF]
, 2018 A number of recent works have proposed to solve the line spectral estimation problem by applying off-the-grid extensions of sparse estimation techniques.
Fleury, Bernard Henri +2 more
core +3 more sources