Results 51 to 60 of about 128,430 (194)

Multiple-Input Multiple-Output (MIMO) Optical Wireless Communications

, 2012
People’s ideas about communications have changed completely, nowadays when this subject is mentioned almost everyone thinks of wireless communications. The demand for broadband wireless communications offering greater and greater data rates is endless, and the radio-technology community is trying harder and harder to satisfy this demand.
openaire   +3 more sources

MIMO Underwater Acoustic Communications in Ports and Shallow Waters at Very High Frequency

Journal of Sensor and Actuator Networks, 2013
Hermes is a Single-Input Single-Output (SISO) underwater acoustic modem that achieves very high-bit rate digital communications in ports and shallow waters. Here, the authors study the capability of Hermes to support Multiple-Input-Multiple-Output (MIMO)
Gaultier Real, Pierre-Philippe Beaujean, Pierre-Jean Bouvet   +2 more
doaj   +1 more source

Downlink Multiple Input Multiple Output Mixed Sparse Code Multiple Access for 5G System

IEEE Access, 2018
For downlink multiple-input multiple-output-sparse code multiple access (MIMO-SCMA) system, the convergence reliability of the detected codeword in each decision process is unsatisfactory at the message passing algorithm receiver. To address this problem,
Cheng Yan, Ningbo Zhang, Guixia Kang
doaj   +1 more source

Adaptive widely linear processing for MIMO systems

Revista Tecnologia, 2010
Wireless communication systems using two or more transmit antennas and one or more receiving antennas have emerged in recent years. There are several reasons for this to be occurring, including: the increasing demand for high data rate, high user ...
Francisco José Alves de Aquino
doaj  

Phase Noise Effects in Synchronized Wireless Networks for MIMO-OFDM [PDF]

Mehran University Research Journal of Engineering and Technology, 2014
Channel impairments effects are evaluated by inclusion of phase noise in a synchronization error correction algorithm for MIMO (Multiple Input Multiple Output) OFDM (Orthogonal Frequency Division Multiplexing) systems.
Muhammad Khurram Kiyani, Asim Loan
doaj  

Othogonal Waveform Design for Multiple-Input Multiple-Output (MIMO) Radar

Open Journal of Applied Sciences, 2012
An effective numerical approach is developed for orthogonal waveform design for Multiple-Input Multiple-Output (MIMO) radar. The Doppler shift tolerance is considered in the design cost function. The design results indicate that the Doppler  tolerance of the designed orthogonal waveforms is markedly improved.
openaire   +1 more source

Uniform Quantization for Multi-Antenna Amplify–Quantize–Forward Relay

IEEE Access
In this paper, we investigate a multi-antenna amplify-quantize–forward (AQF) relay system, where a half-duplex relay quantizes both the real and imaginary components of amplified received signals, storing them in memory before forwarding them to a
Gangsan Jeong, Xianglan Jin
doaj   +1 more source

Analysis and modeling of multiple-input multiple-output (MIMO) radio channel based on outdoor measurements conducted at 2.5 GHz for fixed BWA applications

2002 IEEE International Conference on Communications. Conference Proceedings. ICC 2002 (Cat. No.02CH37333), 2002
P. Soma, D. Baum, V. Erceg, R. Krishnamoorthy, A. Paulraj   +4 more
semanticscholar   +1 more source

Multiple-Input Multiple-Output (MIMO) MRI: Combining Parallel Excitation and Parallel Reception for Enhanced Imaging. [PDF]

IEEE Trans Comput Imaging, 2019
Mao X, Vike NL, Talavage TM, Rispoli JV, Love DJ.   +4 more
europepmc   +1 more source