interference reduction
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2021 ◽  
Vol 2066 (1) ◽  
pp. 012031
Author(s):  
Nannan Zhang

Abstract With the rapid development of the information age, mobile communication networks have gradually entered people’s lives. The emergence of 5G networks has accelerated the convenience of people’s communication and contact, and has become an advanced information technology that has been widely used in various fields. Although the emergence of 5G networks is beneficial, the remote transmission quality of communication signals has also caused many problems. The optimization of remote transmission quality can effectively improve the operational stability of the communication network. There are many ways to optimize the transmission quality of communication signals. For example, when signal interference needs to be reduced, calculate the average value of signals in various places, set the interference reduction threshold function, and complete the remote transmission quality optimization of communication signals. The existing method is to use microblogs with hard and soft thresholds to decompose the signal quality through multiple scales to provide interference reduction thresholds, but ignore the calculation of the average value of the subband signals, so the signal transmission quality is optimized The effect is not satisfactory. It is recommended to reduce the interference in the network communication process based on the anti-window. First, the input communication signal is Pulley converted, the frequency domain interference detection is performed on the communication signal, a low-pass prototype filter is formed, the average value of the signal in each place is calculated, the interference reduction threshold is set, and the network communication process is completed. The weakening of interference realizes the optimization of transmission quality. This article conducts research and discussion on the optimization of the long-distance transmission quality of the communication signal of the 5G network. Experimental research results show that by demonstrating the optimization of the quality of the 5G communication signal transmission process, these demonstrations can ensure the quality of the communication signal, and people’s demand for the network is already indispensable.


2021 ◽  
Author(s):  
Swapna ◽  
Tangelapalli ◽  
P. Pardha Saradhi ◽  
Rahul Jashvantbhai Pandya ◽  
Sridhar Iyer

Sensors ◽  
2021 ◽  
Vol 21 (15) ◽  
pp. 5005
Author(s):  
Caleb Rascon

Beamforming is a type of audio array processing techniques used for interference reduction, sound source localization, and as pre-processing stage for audio event classification and speaker identification. The auditory scene analysis community can benefit from a systemic evaluation and comparison between different beamforming techniques. In this paper, five popular beamforming techniques are evaluated in two different acoustic environments, while varying the number of microphones, the number of interferences, and the direction-of-arrival error, by using the Acoustic Interactions for Robot Audition (AIRA) corpus and a common software framework. Additionally, a highly efficient phase-based frequency masking beamformer is also evaluated, which is shown to outperform all five techniques. Both the evaluation corpus and the beamforming implementations are freely available and provided for experiment repeatability and transparency. Raw results are also provided as a complement to this work to the reader, to facilitate an informed decision of which technique to use. Finally, the insights and tendencies observed from the evaluation results are presented.


Author(s):  
Mirza Uzair Baig ◽  
Kareem S. Elassy ◽  
Anders Høst-Madsen ◽  
Aaron T. Ohta ◽  
Wayne A. Shiroma ◽  
...  

AbstractRecent progress in the understanding of the behavior of the interference channel has led to valuable insights: first, discrete signaling has been discovered to have tangible benefits in the presence of interference, especially when one does not wish to decode the interfering signal, i.e., the interference is treated as noise, and second, the capacity of the interference channel as a function of the interference link gains is now understood to be highly irregular, i.e., non-monotonic and discontinuous. This work addresses these two issues in an integrated and interdisciplinary manner: it utilizes discrete signaling to approach the capacity of the interference channel by developing lower bounds on the mutual information under discrete modulation and treating interference as noise, subject to an outage set, and addresses the issue of sensitivity to link gains with a liquid metal reconfigurable antenna to avoid the aforementioned outage sets. Simulations illustrate the effectiveness of our approach.


Author(s):  
Collins Burton Mwakwata ◽  
Osama Elgarhy ◽  
Yannick Le Moullec ◽  
Muhammad Mahtab Alam ◽  
Sven Parand ◽  
...  

2021 ◽  
pp. 14-25
Author(s):  
A. S. Antonov ◽  
E. L. Kapylov

The article deals with the methods of increasing the noise immunity of the navigation equipment of the consumer under the influence of deliberate imitation interference (spoofing). The main differences between imitation interference and powerful noiselike interference are highlighted. The initial data for computer modeling of various signal-interference conditions are formed, with makes it possible to conduct a comparative analysis of various methods of interference suppression. The created model allows us to take into account the real coordinates of navigation satellites relative to the selected observation point, the geometry of the antenna array of the navigation receiver and its main functional characteristics. The possibility of using antenna arrays with a controlled diagram-forming scheme for focusing the radiation pattern in the directional of arrival of satellite navigation signals and creating a «zero» in the direction of arrival of interference is investigate. The dependence of the potential level of interference suppression on the elevation of interference arrival is analyzed. A comparison of two optimization methods used as an interference reduction algorithm is presented.


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