Personal Digital Cellular
- Personal Digital Cellular
Personal Digital Cellular (PDC) is a 2G mobile phone standard developed and used exclusively in Japan.
After a peak of nearly 80 million subscriber to PDC, it had 46 million subscribers in December 2005, and is slowly being phased out in favor of 3G technologies like W-CDMA and CDMA2000.
Technical Overview
Like D-AMPS and GSM, PDC uses TDMA. The standard was defined by the RCR (later became ARIB) in April 1991, and NTT DoCoMo launched its Digital mova service in March 1993. PDC uses 25 kHz carrier, pi/4-DQPSK modulation with 3-timeslot 11.2 kbit/s (full-rate) or 6-timeslot 5.6 kbit/s (half-rate) voice codecs.
PDC is implemented in the 800 MHz (downlink 810-888 MHz, uplink 893-958 MHz), and 1.5 GHz (downlink 1477-1501 MHz, uplink 1429-1453 MHz) bands. The air interface is defined in RCR STD-27 and the core network MAP by JJ-70.10. NEC and Ericsson are the major network equipment manufacturers.
The services include voice (full and half-rate), supplementary services (call waiting, voice mail, three-way calling, call forwarding, and so on), data service (up to 9.6 kbit/s CSD), and packet-switched wireless data (up to 28.8 kbit/s PDC-P). Voice codecs are PDC-EFR and PDC-HR.
Compared to GSM, PDC's weak broadcast strength allows small, portable phones with light batteries at the expense of substandard voice quality and problems maintaining the connection, particularly in enclosed spaces like elevators.
Operators of PDC Service
* NTT DoCoMo ("mova" brand)
* SoftBank Mobile
* KDDI
** au: PDC service terminated on March 31, 2003
** TU-KA: Service terminated on March 31, 2008
Standardization Organizations
* Association of Radio Industries and Businesses (ARIB)
* Telecommunication Technology Committee (TTC)
Wikimedia Foundation.
2010.
Look at other dictionaries:
Personal Digital Cellular — Saltar a navegación, búsqueda Personal Digital Cellular (PDC) es una tecnología de telefonía móvil 2G que se utiliza en comunicaciones de telefonía móvil digital en Japón. Utiliza una variante de TDMA (Time Division Multiple Access ) que divide… … Wikipedia Español
Personal Digital Cellular — (oder kurz PDC) ist ein Mobilfunkstandard, der ausschließlich auf dem Japanischen Markt genutzt wird, wo er auch entwickelt wurde. Er wird wie GSM der zweiten Generation von Mobilfunk Standards zugerechnet. Zu Hochzeiten hatte das System 80… … Deutsch Wikipedia
Personal Digital Cellular — Le Personal Digital Cellular, plus communément appelé PDC est une technique de téléphonie mobile de seconde génération utilisée au Japon. Il s agit d une technique basée sur le TDMA (Time Division Multiple Access) à l instar du GSM qui a été… … Wikipédia en Français
Personal digital assistant — PDA redirects here. For other uses, see PDA (disambiguation). The Palm TX … Wikipedia
Personal Communications Network — (PCN) is the European digital cellular mobile telephone network, developed in accordance with GSM standards.The PCN system was first initiated by Lord Young in 1988. The Characteristics of PCN are as follows:a) Operating frequency 1.7 to 1.88 GHz … Wikipedia
Personal Communications Service — This article is about the mobile phone service type. For the North American Numbering Plan 5XX area codes, see Personal Communications Service (NANP). At the most basic level Personal Communications Service or PCS describes a set of wireless… … Wikipedia
Personal computer — This article is about personal computers in general. For computers generally referred to as PCs , see IBM PC compatible. For hardware components dealing with personal computers, see Personal computer hardware. Personal computer An illustration of … Wikipedia
Digital Revolution — A university computer lab containing many desktop PCs The Digital Revolution is the change from analog mechanical and electronic technology to digital technology that has taken place since c. 1980 and continues to the present day.[1] … Wikipedia
Cellular Phone — Smartphone aus dem Jahr 2004: das Siemens SX1 mit integriertem Radio und MP3 Player Ein Mobiltelefon (auch Handy, Funktelefon, GSM Telefon, Funker, in der Schweiz auch Natel) ist ein tragbares Telefon, das über Funk mit dem Telefonnetz… … Deutsch Wikipedia
Digital Consumer Electronics Boom — ▪ 2007 by Steve Alexander The proliferation of consumer electronics gadgets continued in 2006 as it became routine to encounter people speaking on cellular phones, listening to digital music on headphones, or snapping countless pictures… … Universalium
