A Comparison Study Be’iween T?ml4 and F’m4 in Digital Wiiu: ..ess Systems
ثبت نشده
چکیده
A hstn7~1 I have revised and explained in the case of digital cellular systems, the difference between T’MA and FDA&I. For ZDhAl, 1 give a general expression for the frame efikiency and the number of speech channels per frame. For both, I concentrate my study on the spectral efficiency and the capacity. I give the parameters which influence them and their nature. I have also done a qualitative comparison between the two multiple access technologies and have explained why those days TDMA is popular
منابع مشابه
Quality comparison of direct digital panoramic radiography and computed radiography panoramic
BACKGROUND AND AIM: Digital panoramic X-ray images can be captured using photostimulable phosphors or solid-state detectors (i.e. charge-coupled devices and Flat-Panels). The first category is defined as computed radiography (CR) or semi-direct radiography. The second technology that uses solid-state detectors is known as direct digital radiography (DDR). Both of these technologies have their o...
متن کاملارزیابی تطبیقی کارایی ساختار فراداده نظامهای شناسگر دیجیتالی
The main solution to the problems of persistency and uniqueness in identification of digital objects in a web environment is provided by using digital identifiers instead of URL. The main basis of this solution is resolution mechanism that is used in digital identifier systems. Resolution is the use of indirect names instead of URLs; what worked for the DNS (Domain Name System) in stabilizing i...
متن کاملمحاسبۀ تابع انتقال مدولاسیون برای بررسی کنترل کیفی در رادیولوژی دیجیتال
The usage of digital radiology systems with insufficient quality control of digital image detectors can efface inherent superiorities of digital systems in comparison with analogue radiology systems and even makes an increased level of patients’ radiation doses. Modulation transfer function (MTF) is one of the most important parameters related to image quality and digital detectors efficiency. ...
متن کاملComparison of Diagnostic Accuracy of Cone Beam Computed Tomography and Digital Radiography for Detection of Vertical Root Fractures with and without Gutta Percha
Objective: Diagnosis of vertical root fractures (VRFs) is critical in endodontics which most of the times occurs in endodontically treated teeth with root canal fillings such as gutta percha. Despite Cone Beam Computed Tomography (CBCT) has significantly enhanced image quality compared to digital radiography (DR) which aid the diagnosis, artifacts has remained as a problem in VRF detection . ...
متن کاملA Comparison of the Efficiency and Effectiveness of Radiology Departments in Hospitals before and after Digital System Implementation
Background and Objectives: Considering the importance of the radiology department, which devours most of the financial resources, efficiency and effectiveness in this department is one of the main concern of policymakers in most health care systems. The aim of this study was to investigate the efficiency and effectiveness of a radiology department before and after the implement...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 1998