The antenna arrays have attractive form factors: in the 2 GHz band, a half-wavelength-spaced rectangular array with 200 dual-polarized elements is about 1.5 x 0.75 meters large. Multidimensional arrays in MATLAB are an extension of the normal two-dimensional matrix. There’s no set figure for what constitutes a Massive MIMO set-up, but the description tends to be applied to systems with tens or even hundreds of antennas. MAID (Massive Arrays of Inactive Disks・メイド)とは、コロラド大学のDirk Grunwaldによって提唱された、アクセス局在性に基づく階層化モデルをストレージシステムに適用した大規模ディスクアレイモデルのひとつである。 10. [ + of] A dazzling array of celebrities are … In massive MIMO, you have M degrees of freedom if you have M antennas at the base station. If no such conversion is possible, the value returned is c unchanged. Because only specific disks spin at a given time, what is not in use is literally a massive array of idle disks, which also means the system produces less heat than other large storage systems. Related topics: Military array array 2 verb [transitive] 1 literary PUT ON CLOTHES to wear particular clothes, especially clothes of good quality arrayed in something She came in arrayed in all her finery. In order to achieve this, each array uses multiple antennas . Web page load speed is the rate at which a web page becomes... A software platform is a framework of software that is intended and designed... Webopedia’s Quick Reference Section: Blade servers, Software-Defined Storage (SDS) Definition & Meaning, The Complete List of Text Abbreviations & Acronyms, How to Create a Website Shortcut on Your Desktop, Windows Operating System History & Versions. This improves performance but does not deliver fault tolerance, meaning all data is lost if one drive fails. Level 0 (striped disk array without fault tolerance): Level 0 provides data striping but no redundancy. The Antonyms for massive. In this dissertation, we focus on the performance of Massive MIMO. Synonyms for massive in Free Thesaurus. What is “Massive MIMO” Massive MIMO is the extension of traditional MIMO technology to antenna arrays having a large number (>>8) of controllable antennas Transmission signals from the antennas are adaptable by thegain or [42] In a rich scattering environment, the full advantages of the massive MIMO system can be exploited using simple beamforming strategies such as maximum ratio transmission (MRT), [43] maximum ratio-combining (MRC) [44] or zero forcing (ZF). These examples are from corpora and from sources on the web. MAID (Massive Arrays of Inactive Disks・メイド)とは、コロラド大学のDirk Grunwaldによって提唱された、アクセス局在性に基づく階層化モデルをストレージシステムに適用した大規模ディスクアレイモデルのひとつである。, 一般に、メモリにはアクセス局在性に基づく階層化モデルが存在し、それに基づいて実装されている。たとえば、CPUの内部レジスタからキャッシュメモリ・メインメモリ・補助記憶装置と徐々に低速・大容量の記憶装置を階層的に配置する事により、アクセスの集中度合いに応じた適切なメモリデバイスが割り当てられている。ディスクアレイシステムにも、やはりアクセスの集中が存在し、ディスクアレイ全体のうち80%のアクセスは、20%のハードディスクドライブに集中している事が統計的に明らかにされた。言い換えれば、高性能で常時スタンバイしているハードディスクドライブはディスクアレイ全体の20%だけでよく、残りのハードディスクドライブは低性能で常時モーターを回す必要すら無い。アクセス集中がおきる領域を担う高速なアクセスできる高階層のファイバーチャネルハードディスクドライブ等と、その下の階層にあるテープの様な非常に遅い媒体の間に、テープよりは若干高価で高速だが高階層の高性能ハードディスクドライブよりは安価なシリアルATAハードディスクドライブを大量に挿入する。これらの中階層にあるハードディスクドライブはアクセスが集中しないので通常モーターの回転を止めておく事によりシステム全体の寿命を延長する。そして安価なデバイスを使う事によりストレージシステム全体の性能を向上しながらもシステム全体のコストを削減するものである。, Enterprise Watch ディスクとテープのギャップを埋めるMAIDテクノロジ, https://ja.wikipedia.org/w/index.php?title=Massive_Arrays_of_Inactive_Disks&oldid=38955978. Vangie Beal is a freelance business and technology writer covering Internet technologies and online business since the late '90s. Large or imposing, as in quantity, scope, degree, intensity, or scale: "Local defense must be reinforced by the further deterrent of massive retaliatory power"(John Foster Dulles). This means that a receiver antenna array can receive data from and send data to multiple devices at the same time via the transmitter. From A3 to ZZZ we list 1,559 text message and online chat abbreviations to help you translate and understand today's texting lingo. Massive MIMO, on the other hand, is a MIMO system with an especially high number of antennas. massive hepatic necrosis massive, usually fatal, necrosis of the liver, a rare complication of viral hepatitis (fulminant hepatitis) that may also result from exposure to hepatotoxins or from drug hypersensitivity. One is the part representing the basic beam pattern and it is expressed as F(). Generally to generate a multidimensional array, we first create a two-dimensional array and extend it. In particular, with a simple power control scheme, Massive MIMO can o er uniformly good service for all users. I almost never use for loops in JavaScript and many other languages anymore. Webopedia is an online dictionary and Internet search engine for information technology and computing definitions. With a massive MIMO antenna and complex signal processing, cell towers can take advantage of various propagation modes to send more data with better reliability. The preceding program declares an array (named anArray) with the following line of code: Like declarations for variables of other types, an array declaration has two components: the array's type and the array's name. If you take a look at the following expression, you would notice that it is made up of two big chunks. The size of the array is not part of its type (which is why the brackets are empty). Massive MIMO is the back-bone for 5G network where 100 or more antenna elements are to be used for various benefits. MAID is a storage system solution that reduces both wear on the drives and also reduces power consumption. In the downlink, this means that you choose a precoding vector in 1 … That means that, for example, five values of type int can be declared as an array without having to declare 5 … The Nationwide Transmutation Circle (国土錬成陣, Kokudo Renseijin), as it is most often referred to, is a gigantic Transmutation Circle being dug in the form of an interconnecting underground tunnel that travels all around the nation of Amestris. THIS COMPENSATION MAY IMPACT HOW AND WHERE PRODUCTS APPEAR ON THIS SITE INCLUDING, FOR EXAMPLE, THE ORDER IN WHICH THEY APPEAR. vb ( tr) 11. to dress in rich attire; adorn. alley definition: 1. a narrow road or path between buildings: 2. a path in a park or garden, especially with trees…. Learn more. This Webopedia guide will show you how to create a desktop shortcut to a website using Firefox, Chrome or Internet Explorer (IE). TECHNOLOGYADVICE DOES NOT INCLUDE ALL COMPANIES OR ALL TYPES OF PRODUCTS AVAILABLE IN THE MARKETPLACE. (Computer Science) computing a regular data structure in which individual elements may be located by reference to one or more integer index variables, the number of such indices being the number of dimensions in the array. Array( [0] => 1 [1] => 1 [2] => 1 [3] => 13 [4] => 1 [8] => 1 [9] => 19) Note that index '3' is defined twice, and keep its final value of 13. The Copan array treats drives in the array similar to a tape library (VTL) where only what is needed is actually powered. We look at the history of Windows... By Vangie Beal 2. a. In storage terminology a massive array of idle disks, or MAID as it is abbreviated, is a technology that uses a large group of hard disk drives, hundreds or even thousands, with only those drives that are needed actively spinning at any given time. Converts c to its lowercase equivalent if c is an uppercase letter and has a lowercase equivalent. Massive parallel sequencing or massively parallel sequencing is any of several high-throughput approaches to DNA sequencing using the concept of massively parallel processing; it is also called next-generation sequencing ( NGS) or second-generation sequencing. From Wikipedia, the free encyclopedia. An array's name can be anything you … Arrays An array is a series of elements of the same type placed in contiguous memory locations that can be individually referenced by adding an index to a unique identifier. to the multiplexing gain and the array gain. a large group of things or people, especially one that is attractive or causes admiration or has been positioned in a particular way: There was a splendid array of food on the table. The Windows operating system (Windows OS) refers to a family of operating systems developed by Microsoft Corporation. massive Massive Action Game Massive Adaptable Environment for Kasetsart Application Massive All Layer Liposuction Massive array of idle disks Massive Array of Inactive Disks Massive Assault Network Massive Astronomical all-flash array: An all- flash array is a solid state storage disk system that contains multiple flash memory drives instead of spinning hard disk drives . The term MIMO stands for Multiple Input Multiple Output. SMART Vocabulary: related words and phrases. An array having more than two dimensions is called a multidimensional array in MATLAB. Multidimensional Arrays. There are two techniques by which complex data symbols are transmitted using multiple antennas viz. More than 100 of the ET 302 families have filed suit against Boeing and are seeking an array of Boeing and FAA documents relating to the two crashes. Massive MIMO does not have a specific meaning other than having more antennas than what is currently used in mobile networks. Google has many special features to help you find exactly what you're looking for. It refers to multiple antennas used for transmission and reception of electro-magnetic waves. In case of low / mid frequency region without using massive antenna array (as in (A) / (B)), a single transmission would cover a lot of UEs simultaneously. ADVERTISER DISCLOSURE: SOME OF THE PRODUCTS THAT APPEAR ON THIS SITE ARE FROM COMPANIES FROM WHICH TECHNOLOGYADVICE RECEIVES COMPENSATION. Search the world's information, including webpages, images, videos and more. In storage terminology a massive array of idle disks, or MAID as it is abbreviated, is a technology that uses a large group of hard disk drives, hundreds or even thousands, with only those drives that are needed actively spinning at any given time. An array's type is written as type[], where type is the data type of the contained elements; the brackets are special symbols indicating that this variable holds an array. 2 literary ARRANGE A 1. countable noun [with singular or plural verb, usually singular] An array of different things or people is a large number or wide range of them. Instead, when iterating over collections I tend to use the map operator when it’s … b. As the deadline approached she experienced a bewildering array of emotions. STBC (Space Time Block Coding) and SM … It is the type of the math that you learned in senior high school or early years inthe university linear algebra. The word “massive” refer to the number of antennas and not the physical size. However, when the radiation become beam-shaped as (C), it is very difficult Hotmail was one of the first public webmail services that could be accessed from any web browser. This example creates a 1-based array. Jump to navigation Jump to search. Index 4 is defined after index 8, and next generated index (value 19) is 9, since biggest index was 8. One type of MAID is called the Copan array (Copan Systems Inc.). They sat before an array of microphones and cameras. Level 1 (mirroring and A Copan array can contain hundreds of terabytes of disks which share supply, controller, and cabinet. But it is difficult to introduce massive-elements antennas (100 or more elements) that are required for Spear guns come in a wide array of lengths, and it is important to match the size Massive MIMO a technology where the number of terminals is much less than the number of base station (mobile station) antennas.