Results 201 to 210 of about 412,411 (261)

Sampling and Reconstruction of Multiple-Input Multiple-Output Channels

IEEE Transactions on Signal Processing, 2019
Based on the recent development of sampling and reconstruction results for slowly time-varying single-input single-output channel operators, we derive sampling results in the multiple-input multiple-output setting where all subchannels satisfy an underspread condition, that is, their spreading functions are supported on individual sets of small measure.
Dae Gwan Lee, Gotz E Pfander
exaly   +3 more sources

Multiple-input multiple-output circular SAR

2014 15th International Radar Symposium (IRS), 2014
Interest on circular and multicircular SAR acquisitions has been increased in the past few years due to the inherent potentials they provide, e.g., full 3-D reconstruction and subwavelength resolution. However, one main limitation is the size of the spotlighted region, which is basically defined by the range ambiguities, the pulse repetition frequency (
Ponce, Octavio, Rommel, Tobias, Younis, Marwan, Prats, Pau, Moreira, Alberto   +4 more
openaire   +2 more sources

Identification of interconnected multiple-input multiple-output systems: Application to a multiple-input multiple-output thermal process

International Journal of Systems Science, 1999
A new algorithm for estimation of the parameters of multiple-input multiple-output (MIMO) systems with strong interconnections between inputs and outputs. The proposed algorithm uses a new transformation of the input-output difference equation. A modified Kalman filter is employed to estimate recursively and sequentially parameters of the MIMO system ...
Mustapha Ouladsine, Ahmed El Hajjaji, Ahmed Rachid   +2 more
openaire   +1 more source

Input—output properties of multiple-input, multiple-output discrete systems: part I

Journal of the Franklin Institute, 1970
Nonlinear time varying discrete feedback systems input-output properties, deriving stability criteria by generalized small gain and passivity ...
Desoer, C. A., Wu, M. Y.
openaire   +2 more sources

Linear receivers for the multiple-input multiple-output multiple-access channel

IEEE Transactions on Communications, 2006
We consider a multiuser multiple-input multiple-output (MIMO) communication system using code-division multiple access (CDMA) and multiuser detection to discriminate the different users. Our focus is on the CDMA uplink of a frequency-nonselective Rayleigh fading channel.
NORDIO, ALESSANDRO, TARICCO, GIORGIO
openaire   +2 more sources

A reconfigurable multiple-input multiple-output communication system

IEEE Transactions on Wireless Communications, 2008
In this paper, we present a theoretical analysis on the gains offered by a reconfigurable multiple-input multiple-output (MIMO) system using orthogonal space-time block codes (OSTBCs) and reconfigurable antennas at the receiver only. The proposed system using reconfigurable antennas selects the optimal radiation state of the receive antennas in which ...
Alfred Grau, Hamid Jafarkhani, Franco De Flaviis   +2 more
openaire   +1 more source

Determining the characteristics of systems with multiple inputs and multiple outputs

Automatic Control and Computer Sciences, 2007
A simple and computationally efficient method of determining the transfer function and other characteristics of systems with multiple inputs and multiple outputs (MIMO systems) described by autoregression equations is proposed. The method is based on the use of the discrete Fourier transformation.
Kazys Kazlauskas, Jaunius Kazlauskas
openaire   +1 more source

Multiple-input - multiple-output measurements and modeling in Manhattan

IEEE Journal on Selected Areas in Communications, 2003
Narrowband multiple-input-multiple-output (MIMO) measurements using 16 transmitters and 16 receivers at 2.11 GHz were carried out in Manhattan. High capacities were found for full, as well as smaller array configurations, all within 80% of the fully scattering channel capacity. Correlation model parameters are derived from data.
Dmitry Chizhik, Jonathan Ling, Peter W. Wolniansky, Reinaldo A. Valenzuela, Nelson Costa, Kris Huber   +5 more
openaire   +1 more source

Macrocell multiple-input multiple-output system analysis

IEEE Transactions on Wireless Communications, 2006
We develop a semi-deterministic semi-stochastic channel model for the multiple-input multiple-output (MIMO) system under the macrocell environment with local-to-mobile and local-to-base scatterers. We show that employing closely-spaced antennas (e.g., phased array) at the base station is capable of achieving diversity via the local-to-base scatterers ...
Gang Shi, Arye Nehorai
openaire   +1 more source

Multiple-Input Multiple-Output SAR

2017
For the conventional SAR, the swath width and azimuth resolution are contradictions because of the limitations of minimum antenna area, so they cannot be improved simultaneously.
Ruliang Yang, Haiying Li, Shiqiang Li, Ping Zhang, Lulu Tan, Xiangwu Gao, Xueyan Kang   +6 more
openaire   +1 more source