Results 31 to 40 of about 4,103 (130)

Improved Iterative Parallel Interference Cancellation Receiver for Future Wireless DS-CDMA Systems

open access: yesEURASIP Journal on Advances in Signal Processing, 2005
We present a new turbo multiuser detector for turbo-coded direct sequence code division multiple access (DS-CDMA) systems. The proposed detector is based on the utilization of a parallel interference cancellation (PIC) and a bank of turbo decoders.
Andrea Bernacchioni   +2 more
doaj   +1 more source

Design of direct wave cancellation system for high-frequency CW radar

open access: yesThe Journal of Engineering, 2019
When high-frequency continuous wave (HFCW) radars transmit linear frequency modulated (LFM) continuous wave, there will be direct wave (DW) interference due to temporal continuity.
Nan Shang   +3 more
doaj   +1 more source

Influence and its suppression of desired signal coupling to reference signal to interference cancellation system

open access: yesTongxin xuebao, 2015
The time-domain characteristics of adaptive interference cancellation system with desired signal coupling to reference signal were analyzed.The analyses reveal the desired signal makes the system a time-variation system and the optimal weights were ...
Yun-hao JIANG, Zhi-hua ZHAO
doaj   +2 more sources

Optimal Power Allocation Scheme Based on Multi-Factor Control in Indoor NOMA-VLC Systems

open access: yesIEEE Access, 2019
In order to overcome the limitation of narrow modulation bandwidth on the performance in the visible light communication (VLC) systems, non-orthogonal multiple access (NOMA) is applied to the downlink VLC networks in this paper to improve the sum rate ...
Qian Li   +3 more
doaj   +1 more source

Phase Compensation Self-interference Cancellation Method for Full-duplex Single-Carrier Underwater Acoustic Communication

open access: yes水下无人系统学报
Aiming at the problem that the self-interference cancellation performance is degraded due to the phase mismatch between the transmitting and receiving samples in the in-band full-duplex underwater acoustic communication, this paper proposed a method to ...
Songwen WU   +5 more
doaj   +1 more source

Partial PIC-MRC Receiver Design for Single Carrier Block Transmission System over Multipath Fading Channels

open access: yesInternational Journal of Antennas and Propagation, 2012
Single carrier block transmission (SCBT) system has become one of the most popular modulation systems due to its low peak-to-average power ratio (PAPR), and it is gradually considered to be used for uplink wireless communication systems. In this paper, a
Juinn-Horng Deng, Sheng-Yang Huang
doaj   +1 more source

A New Design Criterion of Radio Frequency Front-End Gain for Interference Cancellation Performance in Communication Systems

open access: yesIEEE Open Journal of the Communications Society
Adaptive interference cancellation is an effective means to fulfill the anti-interference requirements of communication systems. The radio frequency (RF) front-end gain plays a crucial role since it determines the communication sensitivity and anti ...
Ze Wang   +4 more
doaj   +1 more source

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

open access: yesSensors, 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

open access: yesElectronics
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   +13 more
openaire   +1 more source

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

open access: yesTongxin 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   +3 more
doaj   +2 more sources

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