Results 1 to 10 of about 63,354 (252)

SVD-Based Technique for Interference Cancellation and Noise Reduction in NMR Measurement of Time-Dependent Magnetic Fields

Sensors, 2016
A nuclear magnetic resonance (NMR) experiment for measurement of time-dependent magnetic fields was introduced. To improve the signal-to-interference-plus-noise ratio (SINR) of NMR data, a new method for interference cancellation and noise reduction ...
Wenjun Chen, Hong Ma, De Yu, Hua Zhang
doaj   +1 more source

Iterative Maximum Ratio Combining Detector for Satellite Multiple-Input Multiple-Output/Orthogonal Time–Frequency Space Systems Based on Soft-Symbol Interference Cancelation

Electronics
Orthogonal time–frequency space (OTFS) modulation combined with massive multiple-input multiple-output (MIMO) can simultaneously address the problems caused by multipath delay, the Doppler effect, and channel fading. To mitigate inter-subcarrier and inter-symbol interference in satellite–terrestrial MIMO-OTFS systems, an iterative maximum ratio ...
Meng Sun, Qi Zhang, Haipeng Yao, Ran Gao, Jiayuan Li, Weiying Feng, Fu Wang, Xiaohu Li, Xiangyu Liu, Feng Tian, Qinghua Tian, Yi Zhao, Liang Liu, Yuqi Wang   +13 more
openaire   +1 more source

Performance analysis and power optimization for FH secure communication under frequency and phase mismatch

Tongxin xuebao, 2022
The artificial noise (AN) shielded frequency hopping (FH) secure communication can counteract electromagnetic interference and wiretapping, but its carrier frequencies change rapidly within a wide bandwidth which will raise the level of carrier frequency
Changqing SONG, Hongzhi ZHAO, Lizhi QIN, Shihai SHAO   +3 more
doaj   +2 more sources

Optimized Gateway Placement for Interference Cancellation in Transmit-Only LPWA Networks

Sensors, 2018
We study the placement of gateways in a low-power wide-area sensor network, when the gateways perform interference cancellation and when the model of the residual error of interference cancellation is proportional to the power of the packet being ...
Hongxian Tian, Mary Ann Weitnauer, Gedeon Nyengele   +2 more
doaj   +1 more source

A turn-key Concept for active cancellation of Global Positioning System L3 Signal [PDF]

, 2010
We present a concept, developed at the National Astronomy and Ionosphere Center (NAIC) at Arecibo, Puerto Rico, for active suppression of Global Positioning System (GPS) signals in the 305 m dish radio receiver path prior to backend processing.
Edgar, Clyde, Gallagher III, J. S., Lewis, B. Murray, Nigra, Lou, Perillat, Phil, Quintero, Luis, Stanimirovic, Snezana   +6 more
core   +1 more source

Multiuser Massive MIMO Systems With Time-Offset Pilots and Successive Interference Cancellation

IEEE Access, 2019
This paper proposes time-offset pilots for a single-cell multiuser massive multiple-input multiple-output (MIMO) system and studies its performance under the minimum mean-squared error channel estimator and successive interference cancellation.
The Khai Nguyen, Ha H. Nguyen, Tien Hoa Nguyen   +2 more
doaj   +1 more source

Multi-Feedback Interference Cancellation Algorithms for OFDM Systems over Doubly-Selective Channels

Algorithms, 2015
Orthogonal frequency-division multiplexing (OFDM) systems over rapidly time varying channels may suffer from significant inter-carrier interference (ICI), which destroys the orthogonality between subcarriers and degrades the detection performance ...
Peng Li, Min Chen, Li (Alex) Li, Jiao Feng   +3 more
doaj   +1 more source

ADAPTIVE ARRAY SYSTEM FOR JAMMING SOURCES CANCELLATION IN TWO DIMENSIONAL PLANES

Journal of Engineering and Sustainable Development, 2016
The aim of this paper is to enhance the desired signal reception while suppressing the reception of inference signals to get maximum signal to interference plus noise ratio (SINR) at the output.
Bassim Sayed Mohammed, Zahraa Amer Al-Shamma   +1 more
doaj  

Multi-User Detection for Group Orthogonal Multi-Carrier Code Division Multiple Access System in Frequency Selective Rayleigh Fading Channel

Journal of Engineering and Sustainable Development, 2008
Code Division Multiple Access (CDMA) suffers from multi-user interference (MUI), and intersymbol interference (ISI) under frequency selective multi-path fading channels. Orthogonal Frequency Division Multiple access (OFDM) is MUI free but achieves lower
Maha George Zia, Harith Akram Nassir
doaj  

Intercarrier interference cancellation based on iterative detection algorithm for OFDM systems over time-varying channels

Tongxin xuebao, 2006
In order to effectically cancel the intercarrier interference（ICI） in the OFDM（orthogonal frequency-division multiplexing） systems,a novel iterative detection algorithm was proposed based on parallel interference cancellation.With the principle of ...
WANG Xia, ZHU Shi-hua
doaj   +2 more sources