The 3400-3600 MHz band is one of the most important candidate frequency bands for the rollout of 5 G system. However, the coexistence between 5 G system and fixed-satellite service(FSS) in this frequency band is one o...The 3400-3600 MHz band is one of the most important candidate frequency bands for the rollout of 5 G system. However, the coexistence between 5 G system and fixed-satellite service(FSS) in this frequency band is one of the most challenging problems for both academic researchers and industry engineers. In this paper, the saturation interference from 5 G base stations to the existing FSS above 3600 MHz is analyzed and the coexistence solution is achieved, which can reduce the interference and guarantee the coexistence between 5 G system and FSS. Furthermore, the Monte Carlo simulation, laboratory test and field test are carried out to verify the coexistence solution.Results show that an isolation distance of 1-2 km is required to avoid the saturation interference in terms of the adjacent bands scenario.To further reduce the isolation distance to 50 m, additional isolation of 35 dB will be necessary, which can be fulfilled by installing a filter at the input port of LNB from a real implementation perspective.展开更多
Beyond posing a major health crisis,the COVID-19 pandemic has inflicted profound psychological,social,and economic impacts on populations worldwide.Mass quarantines and social isolation have affected the mental health...Beyond posing a major health crisis,the COVID-19 pandemic has inflicted profound psychological,social,and economic impacts on populations worldwide.Mass quarantines and social isolation have affected the mental health of the wider population,exacerbating other stressors,including fear of the virus and its repercussions,general uncertainty,and financial insecurity.The pandemic has challenged the broader delivery of healthcare––ranging from the need to triage limited hospital resources to balancing risk mitigation with maintaining medical care.Specific to gastroenterology,severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)has not only been associated with complicating extant medical conditions of the gastrointestinal(GI)tract,but has also forced a shift in the practice of gastroenterology by patients,families,and healthcare providers alike.The gastroenterology field has been required to adapt its practices to minimize the possibility of viral spread while still upholding patient care.Healthcare practitioners in GI have helped to treat COVID-19 patients,stratified inpatient and outpatient visits and procedures,and shifted to telemedicine.Still,as is the case with much of the general population,healthcare providers working in GI practice or endoscopy have faced personal and professional stressors,mental health difficulties,social isolation,financial pressures,and familial burdens––all of which can take a toll on practitioners and,by extension,the provision of GI care overall.This article will highlight how the COVID-19 pandemic has affected the psychological wellbeing,social engagement,and economic conditions of the public,healthcare providers,and GI professionals specifically.Recommendations for strategies that can continue GI services while maintaining safety for both caregivers and patients are put forth to help uphold critical GI care during this worldwide crisis.展开更多
基金partly supported by National Natural Science Foundation of China (NSFC) (Grant No. 61525101, 61631003)
文摘The 3400-3600 MHz band is one of the most important candidate frequency bands for the rollout of 5 G system. However, the coexistence between 5 G system and fixed-satellite service(FSS) in this frequency band is one of the most challenging problems for both academic researchers and industry engineers. In this paper, the saturation interference from 5 G base stations to the existing FSS above 3600 MHz is analyzed and the coexistence solution is achieved, which can reduce the interference and guarantee the coexistence between 5 G system and FSS. Furthermore, the Monte Carlo simulation, laboratory test and field test are carried out to verify the coexistence solution.Results show that an isolation distance of 1-2 km is required to avoid the saturation interference in terms of the adjacent bands scenario.To further reduce the isolation distance to 50 m, additional isolation of 35 dB will be necessary, which can be fulfilled by installing a filter at the input port of LNB from a real implementation perspective.
文摘Beyond posing a major health crisis,the COVID-19 pandemic has inflicted profound psychological,social,and economic impacts on populations worldwide.Mass quarantines and social isolation have affected the mental health of the wider population,exacerbating other stressors,including fear of the virus and its repercussions,general uncertainty,and financial insecurity.The pandemic has challenged the broader delivery of healthcare––ranging from the need to triage limited hospital resources to balancing risk mitigation with maintaining medical care.Specific to gastroenterology,severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)has not only been associated with complicating extant medical conditions of the gastrointestinal(GI)tract,but has also forced a shift in the practice of gastroenterology by patients,families,and healthcare providers alike.The gastroenterology field has been required to adapt its practices to minimize the possibility of viral spread while still upholding patient care.Healthcare practitioners in GI have helped to treat COVID-19 patients,stratified inpatient and outpatient visits and procedures,and shifted to telemedicine.Still,as is the case with much of the general population,healthcare providers working in GI practice or endoscopy have faced personal and professional stressors,mental health difficulties,social isolation,financial pressures,and familial burdens––all of which can take a toll on practitioners and,by extension,the provision of GI care overall.This article will highlight how the COVID-19 pandemic has affected the psychological wellbeing,social engagement,and economic conditions of the public,healthcare providers,and GI professionals specifically.Recommendations for strategies that can continue GI services while maintaining safety for both caregivers and patients are put forth to help uphold critical GI care during this worldwide crisis.
