Results 91 to 100 of about 78,274 (209)

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, David W. Matolak, Cheng Tao, Liu Liu, Zhenhui Tan, Tao Zhou   +5 more
doaj   +1 more source

A LTE MIMO OTA Test System Using Vector Signal Transceivers [PDF]

, 2016
A 2 × 2 multiple-input-multiple-output over-the-air (MIMO OTA) test system based on four field-programmable Vector-Signal-Transceiver (VST) modules is presented.
Gui, Yunsong, Humphreys, David A., Li, Chong, Loh, Tian-Hong, Qin, Fei, Wang, Haowen   +5 more
core  

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

Sparse Grassmannian Design for Noncoherent Codes via Schubert Cell Decomposition

IEEE Open Journal of the Communications Society
In 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, Yuto Hama, Hiroki Iimori, Chandan Pradhan, Szabolcs Malomsoky, Naoki Ishikawa   +5 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  

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

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