NationMaster - Encyclopedia: Digital radio

Digital radio describes radio technologies which carry information as a digital signal. See also software radio for a discussion of radios which use digital signal processing. Information is a word with many meanings depending on context, but is as a rule closely related to such concepts as meaning, knowledge, instruction, communication, representation, and mental stimulus. ... A digital signal is a signal that is both discrete and quantized. ... A software-defined radio (SDR) system is a radio communication system which uses software for the modulation and demodulation of radio signals. ... Digital signal processing (DSP) is the study of signals in a digital representation and the processing methods of these signals. ...

Examples of two-way digital radio: Digital television (DTV) uses digital modulation and compression to broadcast video, audio and data signals to television sets. ... Orthogonal frequency-division multiplexing (OFDM), also sometimes called discrete multitone modulation (DMT), is a transmission technique based upon the idea of frequency-division multiplexing (FDM). ... DVB, short for Digital Video Broadcasting, is a suite of internationally accepted, open standards for digital television maintained by the DVB Project, an industry consortium with more than 300 members, and published by a Joint Technical Committee (JTC) of European Telecommunications Standards Institute (ETSI), European Committee for Electrotechnical Standardization (CENELEC... Integrated Services Digital Broadcasting (ISDB) is the digital television (DTV) and digital audio broadcasting (DAB) format that Japan has created to allow radio and television stations there to convert to digital. ... 8VSB is the 8-level vestigial sideband modulation method adopted for ATSC standard of digital television in the USA. There are also the similar modulations 2VSB, 4VSB, and 16VSB. There has been a continuing lobby for changing the modulation for ATSC to COFDM instead, the way DVB_T is transmitted in... The Advanced Television Systems Committee (ATSC) is the group that helped to develop the new digital television standard for the United States, also adopted by Canada, Mexico, and South Korea and being considered by other countries. ... Digital audio broadcasting or DAB is a developing technology for broadcasting audio programming in digital form. ... Eureka 147 is a protocol for digital radio broadcasting originally developed in Europe, but now being deployed in many countries around the world. ... Digital audio broadcasting or DAB is a developing technology for broadcasting audio programming in digital form. ... In-band on-channel (IBOC) is a method of transmitting digital radio and analog radio broadcast signals simultaneously on the same frequency. ... iBiquity is a company formed by the merger of USA Digital Radio and Lucent Digital Radio, with the goal of creating an in-band on-channel (IBOC) digital radio system for the United States. ... HD-Radio is a marketing catch-phrase used for IBOC, the terrestrial digital radio standard in the United States. ... Digital Radio Mondiale (DRM) is an international non-profit consortium committed to designing and implementing an open-source platform for digital radio broadcasting around the world, especially on shortwave. ... The acronym DRM can stand for: Digital rights management, also called Digital Restrictions Management Digital Radio Mondiale Direct Rendering Manager is a Linux kernel module that gives direct hardware access to DRI clients. ... Radio Data System, or RDS, is a standard for sending small amounts of digital information using conventional FM radio broadcasts. ... RDS is an abbreviation for all of the following: Radio Data System Random Dot Stereogram Respiratory distress syndrome Romanian Data Systems Royal Dublin Society Le RÃ©seau des sports Inc. ... A pager that is in use for emergency services A pager is an electronic device used to contact people via a paging network. ... FLEX is a communication protocol developed by Motorola and used in many pagers. ... POCSAG is a standard used to transmit data to pagers. ... NTT may refer to Nippon Telegraph and Telephone The New Technology Telescope in La Silla, Chile. ...

Categories: Cleanup from August 2005 | Radio electronics | Radio | Telecommunications stubs Cellular redirects here. ... Not to be confused with Get Some Mates The Global System for Mobile Communications (GSM) is the most popular standard for mobile phones in the world. ... Universal Mobile Telecommunications System (UMTS) is one of the third-generation (3G) mobile phone technologies. ... For use as a prefix, see Tetra- For the encrypted radio network standard TETRA, see Terrestrial Trunked Radio. ... This article needs to be cleaned up to conform to a higher standard of quality. ... IS-54 and IS-136 are second-generation (2G) mobile phone systems, known as Digital AMPS (D-AMPS). ... CDMA2000 is a 3G mobile telecommunications standard that uses CDMA, a modulation scheme for digital radio, to send voice, data and signaling data (such as a dialed telephone number) between mobile telephones and cell sites. ... The title of this article is incorrect because of technical limitations. ... Wireless networks are telephone or computer networks that use radio as their carrier or physical layer. ... Wi-Fi (sometimes written ttt, WiFi, Wifi, wifi) is a trademark for sets of product compatibility standards for wireless local area networks (WLANs). ... HIPERLAN is a WLAN standard. ... This article is about the Bluetooth wireless specification. ... ZigBee is a published specification set of high level communication protocols designed to use small, low power digital radios based on the IEEE 802. ... Network-centric warfare is essentially, a new Military doctrine made possible by the Information Age. ... The Joint Tactical Radio System (JTRS) is planned as the next-generation radio for use by the U.S. military in field operations for the second decade of the 21st century. ... SINCGARS stands for Single Channel Ground and Airborne Radio System. ... Packet radio is a form of digital data transmission used in amateur radio to construct wireless computer networks. ... AX.25 is a data link layer protocol derived from the X.25 protocol suite and designed for use by amateur radio operators. ... The introduction to this article provides insufficient context for those unfamiliar with the subject matter. ... A satellite radio or subscription radio (SR) is a digital radio that receives signals broadcast by communications satellite, which covers a much wider geographical range than normal radio signals. ... A satmodem is a modem used to establish data transfers using a communications satellite as a relay. ... The Basic Exchange Telephone Radio Service or BETRS is a fixed radio service where a multiplexed, digital radio link is used as the last segment of the local loop to provide wireless telephone service to subscribers in remote areas. ... IEEE 802. ...