wave technology
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2022 ◽  
Author(s):  
Anastasia Diana Armida Selivan
Keyword(s):  
New Wave ◽  

Era digital menjadikan komunikasi memasuki babak baru. Teknologi baru yang semakin maju, internet semakin mudah diakses, aplikasi semakin banyak dan media sosial untuk berkomunikasi juga semakin beragam. Setiap orang dengan akses internet (komputer, laptop, smartphone ataupun perangkat sejenisnya) bisa dengan mudah menggunakannya. Disebut sebagai new wave technology, merupakan sebuah teknologi yang menghubungkan antar individu dan kelompok. New wave technology didukung oleh perangkat informasi yang semakin canggih sehingga memunculkan gelombang revolusi teknologi baru. Kekuatan utama dari new wave technology ada pada perangkat informasi baru seperti komputer, handphone, serta akses internet murah. Seperti yang telah diungkapkan diatas, salah satu media yang disebut new wave technology ini adalah internet. Instagram dirasakan memiliki kekuatan ataupun pengaruh dalam industri, sehingga menimbulkan kualitas akun yang menentukan strata maupun kredibilitas pemilik akun. Kredibilitas akun instagram merupakan suatu hal yang cukup penting untuk berbagai kepentingan. Kredibilitas sebuah akun instagram dapat diukur dari tingkat performa yang dihasilkan secara matematis. Dalam mengukur performa diperlukan skala pengukuran yang tertuang ke dalam rasio.


2021 ◽  
Vol 2132 (1) ◽  
pp. 012037
Author(s):  
Chenyu Zu

Abstract Abstract.The growing demand for communications and the emergence of new applications have put the capacity, transmission rate and latency of communications systems to a more severe test. In this context, 5G communication technology has emerged. 5G applications are divided into three typical application scenarios: eMBB, URLLC and mMTC. In order to support these applications, the key technologies of 5G need to be studied in depth. This paper firstly investigates the networking architecture of 5G bearer networks, and carries out a detailed analysis and comparison of 5G fronthaul technology, including the optical fibre direct connection solution, passive WDM solution, active WDM/OTN solution and WDM-PON solution. Secondly, this paper introduces 5G millimetre wave technology to achieve large capacity and high spectral efficiency transmission, including direct intensity modulation method, external modulation method, optical heterodyne method, optical injection locking method and optical phase-locked loop method. Finally, this paper provides an outlook on 5G fronthaul technology and millimetre wave technology.


Author(s):  
B. Parvais ◽  
R. ElKashlan ◽  
H. Yu ◽  
A. Sibaja-Hernandez ◽  
B. Vermeersch ◽  
...  
Keyword(s):  

Author(s):  
M., Sunil Kumar ◽  
C. K., Narayanappa ◽  
M. Nagendra Kumar

Researchers and industry experts are looking for the availability of large bandwidth spectrum due to high market demands and expectations for high data rates. And Millimeter Wave technology possess characteristics to fulfill these requirements. However, due to high power consumption and channel estimation requirements, massive MIMO is utilized in coordination with Millimeter Wave technology. Besides, the performance of mm-WAVE MIMO system is measured by the effective estimation of Channel State Information (CSI) which is a critical and challenging process. Therefore, a Sparse Coding based Reconstruction Learning (SCL) mechanism is presented to efficiently estimate Channel State Information (CSI) for Millimeter-WAVE massive Multiple Input Multiple Output (MIMO) system. For efficiency enhancement, joint sparse learning problem is formulated and a denoised joint sparsity learning matrix is obtained using proposed SCL mechanism. Here, optimization of joint sparse learning problem is summarized by reducing inconsistent and overfitting errors. The proposed SCL mechanism performs well under high as well as low SNR conditions. Moreover, joint sparse coding algorithm is utilized for efficient sparse signal restoration. The performance of proposed SCL mechanism is efficiently measured against several state-of-art-algorithms in terms of energy efficiency, NMSE, channel capacity etc.


2021 ◽  
Vol 11 (6) ◽  
pp. 1138-1143
Author(s):  
Fang Ma ◽  
Jimei Xu ◽  
Weiwei Yang ◽  
Fuqin Bian

In this study, extreme velocity ultrasonic imaging pulse wave technology was used to detect the main indices of atherosclerosis such as carotid intima-media thickness (IMT) and carotid elasticity, and biochemical indices such as glycated hemoglobin, blood glucose and blood lipids in one hundred twenty 18–60-year-old patients with type II diabetes mellitus (T2DM) and 120 healthy controls. We analyzed the correlations between carotid elasticity, carotid IMT, and a range of biochemical indices. The results indicated that when the carotid IMT in young and middle-aged patients with T2DM was within the normal range (0.56±0.03 mm), the carotid artery elasticity was abnormal [Pulse wave propagation velocity (PWV)-BS = 7.69± 1.26 m/s; PWV-ES = 8.34±1.51 m/s; P < 0.05]. Additionally, PWV-BS was positively correlated with age, course of the disease, glycated hemoglobin (HbA1c), and fasting blood glucose (FBG) (r = 0.297, 0.377, 0.369, 0.382), and PWV-ES was positively correlated with age, course of the disease, HbA1c, and FBG (r = 0.318, 0.386, 0.392, 0.339). This finding provides a basis for extreme velocity ultrasonic imaging pulse wave technology to become a new method for the early screening of atherosclerosis in patients with T2DM; this is important for timely clinical intervention in patients with T2DM.


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