scholarly journals Improving the eNodeB Coverage of a Bad Spot Area by Using A Relay Node

2018 ◽  
Vol 2 (02) ◽  
pp. 83
Author(s):  
Fivie Ni'mah ◽  
Hasanah Putri Putri
Keyword(s):  
Field Measurement ◽  
Reference Signal ◽  
Relay Node ◽  
Decode And Forward ◽  
Spot Area ◽  
Term Evolution ◽  
Standard Values ◽  
Long Term Evolution Network

The quality of LTE (Long Term Evolution) network in WR Supratman Street, Bandung is categorized as quite bad as shown by the average RSRP (Reference Signal Receive) and SINR (Signal to Interference Noise Ratio) values of -101.30 dBm and 2.43 dB, respectively. Both parameters are below the standard operator with the average RSRP and SINR standard values of -101.30 dBm and 2.43 dB, respectively. The previous field measurement indicated that the area belonged to a bad spot area caused by shadowing buildings. This study used the node scheme of decode and forward and physical mode of inband relay node with the aim of extending the eNodeB coverage. By applying this technique, the average RSRP value increased by 18% and the average SINR value increased by 53%. Based on the RF (Radio Frequency) parameters, the average RSRP value with samples below the -85 dBm standard improved by 81%, while the average SINR value with samples below 5 dB improved by 45%.

scholarly journals Health-related quality of life in patients with chronic hepatitis C treated with sofosbuvir-based treatment at 1-year post-sustained virological response

2021 ◽  
Author(s):  
Akio Miyasaka ◽  
Yuichi Yoshida ◽  
Akiko Suzuki ◽  
Yasuhiro Takikawa
Keyword(s):  
Quality Of Life ◽  
Hepatitis C ◽  
National Standard ◽  
Health Related Quality ◽  
Related Quality ◽  
Health Related ◽  
Standard Values ◽  
Chronic Hcv

Abstract Purpose Long-term effects on patient health-related quality of life (HRQoL) after direct-acting antiviral (DAA) treatment for hepatitis C virus (HCV) are unknown. We assessed the impact of DAA-mediated HCV clearance on HRQoL from DAA initiation to 1 year after confirmed sustained virological response at 24 weeks post-treatment (SVR24). Methods HRQoL was evaluated using the eight-item Short Form Health Survey (SF-8). Chronic HCV-infected patients were treated for 12 weeks with sofosbuvir-based DAAs. SF-8 was administered at baseline, treatment cessation, SVR24, and 1-year post-SVR24. Results A total of 109 chronic HCV-infected patients were enrolled. The average SF-8 scores were higher than the Japanese national standard values for bodily pain (BP) and mental health at baseline and for general health at 1-year post-SVR24. None of the SF-8 scores differed significantly between baseline and 1-year post-SVR24. Regarding age, sex, liver status, and treatment regimen, the SF-8 scores at 1-year post-SVR24 were affected by only age; individuals aged < 65 years had significantly higher physical component score (PCS), physical functioning, role physical, and BP scores than older individuals. In the multivariable analysis, only age of ≥ 65 years was significantly associated with influencing PCS at 1-year post-SVR24. However, no significant factors were identified for mental component score. Conclusion Upon long-term assessment, although more factors trended higher than national standard values at 1-year post-SVR24 than at baseline, there were no significant changes within factors. As PCS tended to be associated with age, patients aged ≥ 65 years should be carefully monitored for PCS.

scholarly journals Eficiencia de sistemas multiantena MU–MIMO por simulaciones de radiopropagación

2017 ◽  
Vol 11 (1) ◽  
pp. 55-62
Author(s):  
Javier Enrique Arévalo Peña
Keyword(s):  
Reference Signal ◽  
Long Term Evolution ◽  
Signal To Noise ◽  
3Gpp Lte ◽  
Term Evolution ◽  
Received Power ◽  
La Red

El presente artículo tiene como propósito realizar la descripción de los resultados de simulación de radiopropagación con una antena MU{MIMO (4x4) en una red LTE (del inglés Long Term Evolution), con el fin de establecer su eciencia respecto a una antena estándar. En esta vía, se emplea la herramienta de diseño de redes inalámbricas ICS Designer en la cartografía digital de alta resolución en un escenario urbano de la ciudad de Bogotá D.C., Colombia. Se utiliza el modelo 3GPP LTE en la simulación de la red LTE y se analizan los parametros RSRP (del inglés, Reference Signal Received Power), RSRQ (del inglés, Reference Signal Recieved Quality), SNIR (del inglés, Signal to Noise and Interference Ratio) rendimiento (Throughput) y QCI (del inglés, QoS Class Identier). Se evidencian, como consecuencia de los resultados, ventajas de las antenas MU-MIMO.

Random forests‐enabled context detections for long‐term evolution network forrailway

2019 ◽  
Vol 13 (8) ◽  
pp. 1080-1086 ◽  
Author(s):  
Lei Zhang ◽  
Qin Ni ◽  
Guanglin Zhang ◽  
Menglin Zhai ◽  
Juan Moreno ◽  
...  
Keyword(s):  
Random Forests ◽  
Long Term Evolution ◽  
Term Evolution ◽  
Long Term Evolution Network

scholarly journals Long-Term Evolution of Quality of Life and Symptoms Following Surgical Treatment for Endometriosis: Different Trajectories for Which Patients?

2020 ◽  
Vol 9 (8) ◽  
pp. 2461
Author(s):  
Aurélie Comptour ◽  
Céline Lambert ◽  
Pauline Chauvet ◽  
Claire Figuier ◽  
Anne-Sophie Gremeau ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Surgical Treatment ◽  
Short Form ◽  
Complete Information ◽  
Long Term Evolution ◽  
Epidemiological Methods ◽  
Multicenter Cohort Study ◽  
Term Evolution

Many studies have shown a global efficacy of laparoscopic surgery for patients with endometriosis in reducing painful symptoms and improving quality of life (QoL) in the short and long-term. The aim of this study was to analyze the different trajectories of long-term evolution in QoL and symptoms following surgical treatment for endometriosis, and to identify corresponding patient profiles. This prospective and multicenter cohort study concerned 962 patients who underwent laparoscopic treatment for endometriosis. QoL was evaluated using the Short Form (SF)-36 questionnaire and intensity of pain was reported using a visual analog scale prior to surgery and at 6, 12, 18, 24 and 36 months after surgery. Distinctive trajectories of pain and QoL evolution were identified using group-based trajectory modeling, an approach which gathers individuals into meaningful subgroups with statistically similar trajectories. Pelvic symptom trajectories (models of the evolution of dysmenorrhea, dyspareunia and chronic pelvic pain intensity over years) correspond to (1) patients with no pain or pain no longer after surgery, (2) patients with the biggest improvement in pain and (3) patients with continued severe pain after surgery. Our study reveals clear trajectories for the progression of symptoms and QoL after surgery that correspond to clusters of patients. This information may serve to complete information obtained from epidemiological methods currently used in selecting patients eligible for surgery.

An Improved Physical Downlink Control Channel De-Resource Mapping Method in Long Term Evolution Systems

2014 ◽  
Vol 513-517 ◽  
pp. 3577-3580
Author(s):  
Dan Wang ◽  
Wen Wen Xu ◽  
Jia Luo
Keyword(s):  
Reference Signal ◽  
Long Term Evolution ◽  
Mapping Method ◽  
Control Channel ◽  
Evolution System ◽  
Resource Mapping ◽  
Modified Method ◽  
Term Evolution ◽  
System Resource

In TD-LTE (Time Division-Long Term Evolution) system, Resource Element Group (REG) is the unit of de-resource mapping for Physical Downlink Control Channel (PDCCH), due to the reference signal should be considered, which lead to the large calculation. To solve this problem, a modified method is proposed in this paper to reduce the cycles of de-resource mapping. Calculation and simulation reveal that this scheme can reduce the calculation significantly. At the same time, the feasibility and effectiveness of this modified method have been verified.

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