Results 71 to 80 of about 7,868 (183)
Investigation of MIMO Channel Characteristics in a Two-Section Tunnel at 1.4725 GHz
International Journal of Antennas and Propagation, 2017 This paper presents results from a wide band single-input–single-output (SISO) and 16 × 16 virtual multiple-input–multiple-output (MIMO) measurement campaign at a center frequency of 1.4725 GHz in a 100-meter long tunnel laboratory which is terminated by
Rongchen Sun +5 more
doaj +1 more source
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 +2 more
doaj +1 more source
Sparse Grassmannian Design for Noncoherent Codes via Schubert Cell Decomposition
IEEE Open Journal of the Communications SocietyIn this paper, we propose a method for designing sparse Grassmannian codes for noncoherent multiple-input multiple-output systems. Conventional pairwise error probability formulations under uncorrelated Rayleigh fading channels fail to account for rank ...
Joe Asano +5 more
doaj +1 more source
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 +2 more sources
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
Optical MIMO (Multiple-Input Multiple-Output) Communication System
This project investigates the design of an Optical MIMO (Multiple-Input Multiple-Output) Communication System to improve data throughput and reliability in optical wireless networks. The system utilizes multiple optical transmitters and receivers for enhanced spatial multiplexing and bandwidth efficiency. Advanced modulation techniques, such as OOK and
D.Akheera Ajan, Madhumathy P, Sujith S
openaire +2 more sources
Uniform Quantization for Multi-Antenna Amplify–Quantize–Forward Relay
IEEE AccessIn 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
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
Multiple-Input Multiple-Output (MIMO) MRI: Combining Parallel Excitation and Parallel Reception for Enhanced Imaging. [PDF]
IEEE Trans Comput Imaging, 2019 Mao X +4 more
europepmc +1 more source