- CDMA Chipsets
CDMA Chipsets is a popular Chipsets used in 3G and 2G mobile phones manufactured by Qualcomm Inc. cdma DEFAULTSORT Cdma Chipsets Category Mobile technology Telecomm stub ... more details
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- TD-CDMA
TD CDMA , an acronym for time division multiple access Time division Code division multiple access CDMA , is a channel access method based on using spread spectrum across multiple time slot s. ref name Forkel cite web url http citeseerx.ist.psu.edu viewdoc summary?doi 10.1.1.11.3672 title Performance Comparison Between UTRA TDD High Chip Rate And Low Chip Rate Operation accessdate 2009 02 16 author Forkel et al. date 2002 ref It is shown that a mixture of Time division multiple access TDMA and CDMA provides better quality of service for multimedia communication s in terms of data throughput and voice video quality. ref citeweb title Throughput maximization in multimedia TDMA CDMA systems url http ieeexplore.ieee.org xpl freeabs all.jsp?tp &arnumber 1558020&isnumber 33097 author Suh et al. date 2005 ref Standardized implementations TD CDMA is used in IMT 2000 s 3G air interface, defined as IMT TD Time Division, and can also be found in use in UMTS air interfaces, as standardized by the 3GPP in UTRA TDD HCR . UTRA TDD HCR is closely related to W CDMA UMTS , and provides the same types of channels where possible. UMTS s High Speed Downlink Packet Access HSDPA High Speed Uplink Packet Access HSUPA enhancements are also implemented under TD CDMA. ref citeweb title IPWireless Ships First Commercial 3GPP Chipset with Full HSDPA Implementation url http www.ipwireless.com news press 020805.html publisher ipwireless.com accessdate 2008 02 28 archiveurl http web.archive.org web 20070927010536 http www.ipwireless.com news press 020805.html Bot retrieved archive archivedate 2007 09 27 ref References reflist Channel access methods ca TD CDMA es TD CDMA ... more details
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- MC-CDMA
MC CDMA may stand for Multi carrier code division multiple access , a multiple access technology used in telecommunication systems based on OFDM . A variant of the mobile communication standard CDMA2000 , where three or more pairs of 1.25MHz radio channels are used together so that higher data rates can be achieved. disambig ... more details
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- Chip (CDMA)
. References reflist External links http www.umtsworld.com technology cdmabasics.htm CDMA basics cdma Wireless stub ... more details
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- CDMA Certification Forum
CDMA Certification Forum CCF is an international nonprofit partnership between CDMA operators and CDMA device vendors to establish and maintain a core global device certification process that helps improve quality through consistent interoperability, conformance and performance testing across the globe.. External links http www.globalccf.org Official website See also http www.cdg.org CDMA Development Group CDG , an international consortium of companies who have joined together to lead the adoption and evolution of 3G CDMA wireless systems around the world. The CDG is composed of CDMA service providers and manufacturers, application developers and content providers. By working together, the members help to ensure interoperability among systems, while expediting the availability of 3G CDMA technology to consumers. Cellular Telecommunications & Internet Association CTIA The Wireless Association , an international nonprofit membership organization founded in 1984, representing all sectors of wireless communications Category Code division multiple access Wireless stub cdma ... more details
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- Chaotic digital CDMA
Unreferenced stub auto yes date December 2009 Chaotic digital CDMA was invented by Tao Yang Wuxi Tao Yang and Leon O. Chua of the University of California, Berkeley in 1997. This is a chaotic spread spectrum CDMA communication technology where the message signal is first scrambled by an Radio frequency RF chaotic carrier and then sent to the receiver. Many users can share the same communication channel while each other can get their own signal via using unique chaotic carrier s. There was a USA patent for this technology. Cdma DEFAULTSORT Chaotic Digital Cdma Category Code division multiple access Telecomm stub ... more details
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- W-CDMA (UMTS)
W CDMA Wideband Code Division Multiple Access , UMTS FDD , UTRA FDD , or IMT 2000 CDMA Direct Spread ... eg FOMA, W CDMA, UMTS, etc cite web title Draft summary minutes, decisions and actions from 3GPP ... 07 DOCS pdf OP6 13r1.pdf format PDF pages 7 ref It utilizes the DS CDMA channel access method and the Frequency ... features Only key features are cited below. Radio channels are 5 MHz wide. Chip CDMA Chip rate ... handoff. 1 1 frequency reuse scheme Development In the late 1990s, W CDMA was developed by NTT DoCoMo ... as IMT 2000 . The ITU eventually accepted W CDMA as part of the IMT 2000 family of 3G standards, as an alternative ... system. Later, W CDMA was selected as an air interface for UMTS. As NTT DoCoMo did not wait for the finalisation ... of cell phone networks based on CDMA prior to W CDMA was dominated by Qualcomm . Qualcomm was the first company to succeed in developing a practical and cost effective CDMA implementation ... CDMA2000 IS 856 IS 2000 standard. Qualcomm created an experimental wideband CDMA system called CDMA2000 3x which unified the W CDMA 3rd Generation Partnership Project 3GPP and CDMA2000 3rd ... CDMA standard being retained and deployed. Despite incompatibilities with existing air interface ... an all new transmitter technology, W CDMA has been adopted and deployed rapidly, especially in Japan ... news press 2006 press06 44.shtml GSMWorld Press Release ref Rationale for W CDMA W CDMA ... of 1.25 MHz radio channels. Though W CDMA does use a Direct sequence spread spectrum direct sequence CDMA transmission technique like CDMA2000, W CDMA is not simply a wideband version of CDMA2000. The W CDMA system is a new design by NTT DoCoMo, and it differs in many aspects from CDMA2000. From an engineering point of view, W CDMA provides a different balance of trade offs between cost ... phone handsets. W CDMA may also be better suited for deployment in the very dense cities of Europe and Asia. However, hurdles remain, and cross licencing of patent s between Qualcomm and W CDMA vendors ... more details
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- CDMA mobile test set
Deleted image removed Image CDMAMTS.jpg thumb frame right CDMA Mobile Test Set A CDMA Mobile Test Set is a call simulating device that is used to test CDMA cell phones. It provides a network like environment forming a platform to test the cell phone. This reduces cost of manufacturing and testing the cell phone in a real environment. It can be used to test all major 2G, 2.5G, 3G and 3.5G wireless technologies. In a lab, high precision measurement correction over the entire frequency and dynamic range as well as compensation for temperature effects in realtime are critical factors for achieving accuracy. A good quality mobile test set helps in achieving excellent accuracy, which is a major concern for mobile manufacturers. Technologies supported A mobile test set should ideally support the following technologies CDMA2000 WCDMA Bluetooth GSM 1xEVDO Analog signal Analog Time division multiple access TDMA Tests that can be performed RF Antenna Audio LC Display DUT Camera and Keypad Other DUT Interfaces Companies that manufacture Mobile test set Rohde & Schwarz Agilent Product Types Agilent 8960 br Agilent 8924C Older model br R&S CMU200 Universal Radio Communication Tester References Agilent Technologies, http www.home.agilent.com agilent product.jspx?nid 536900143.0.00&lc eng&cc US br Rohde & Schwarz International, http www2.rohde schwarz.com en products test and measurement product categories mobile radio cdma Category Electronic test equipment ... more details
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- CDMA spectral efficiency
See also Spectral efficiency radio resource management CDMA spectral efficiency refers to the system spectral efficiency in bit s Hz site or Erlang unit Erlang MHz site that can be achieved in a certain CDMA based wireless communication system. CDMA techniques also known as spread spectrum are characterized by a very low link spectral efficiency in bit s Hz as compared to non spread spectrum systems, but a comparable system spectral efficiency. The system spectral efficiency can be improved by radio resource management techniques, resulting in that a higher number of simultaneous calls and higher ... is about radio resource management specifically for direct sequence spread spectrum DS CDMA based cellular systems. CDMA based standards Examples of DS CDMA based cellular systems are the 3GPP UMTS ... TD SCDMA system. The terminology used in this article is firstly based on 3GPP2 standards. CDMA ... fundamental channel R FCH is the method used for gated transmission in a CDMA communication system. A mobile station mobile phone in the CDMA communication system transmits a reverse pilot signal ... frame are transmitted. This behavior is not present in any other CDMA modes. Another CDMA invention ... needed date December 2010 of the power on an average on reverse channels. Radio Configuration The CDMA ... access CDMA system may become a limiting factor when the number of users increases maximal capsity ... Image 6 sector site in CDMA.jpg thumb 200px Left 6 sector site in CDMA There are some places ... a voice speech codecs expected to be used in future 4G networks as well CDMA networks, that allows ... Codec B EVRC B is a speech codec used by CDMA networks. EVRC B is an enhancement to EVRC and compresses ... effectively to provide coverage solutions. See also Frequency reuse List of CDMA terminology Mobility management Near far problem Pseudorandom noise References http www.qualcomm.com Designing CDMA ... Cdma Spectral Efficiency Category Code division multiple access Category Radio resource management ... more details
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- List of CDMA terminology
CAVE Cellular Authentication and Voice Encryption CAVE based Authentication CDMA Development Group CDG CDMA Development Group Call Detail Record CDR Call Detail Record Cell site CIBER Cellular Intercarrier ... IP CND Caller Number Display See Caller ID CNID Calling Number Identification See Caller ID CDMA Packet Data Roaming Exchange CRX CDMA Packet Data Roaming Exchange CSCF Call Session Control Function ... date July 2010 Z Empty section date July 2010 External links http www.cdg.org CDMA Development Group CDG http www.cdg.org roaming index.asp International Roaming, CDMA Development Group CDG font Category ... more details
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- Inter standard roaming
Unreferenced date December 2009 Orphan date October 2006 Inter Standard Roaming is a general term in wireless telecommunications that refers to roaming between two standards. This term is now widely used in mobile communnications where especially CDMA customers want to use their phone in areas where there is no CDMA network or there is no roaming agreement in place to support roaming on the used standard. In Europe there is hardly any CDMA network. Most CDMA customers originate from the Americas or the Far East. In order to enable them to roam in Europe Inter Standard Roaming is the solution. The CDMA customers arriving in Europe can register on the available GSM networks. DEFAULTSORT Inter Standard Roaming Category Mobile technology ... more details
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- List of US MVNO
1900 or CDMA 1900 http www.7 eleven.com Air Voice Wireless AT&T, Verizon GSM 850 1900 or CDMA 800 1900 http www.airvoicewireless.com , Also http airvoiceunlimited.com AirLink Mobile Sprint CDMA 1900 http www.airlinkmobile.com Amp d Mobile Verizon CDMA 800 1900 Defunct Boost Mobile Sprint Nextel Sprint CDMA Nextel iDen CDMA 1900 iDEN http www.boostmobile.com Owned by Sprint Nextel Bratz Mobile AT&T ... Cbeyond Sprint CDMA 1900 http www.cbeyond.net services mobile index.htm previously Beyond Mobile Circle K Talk&Go AT&T GSM 850 1900 http www.circlek.com Common Cents Mobile Sprint Nextel Sprint CDMA 1900 http www.commoncentsmobile.com Owned by Sprint Nextel CREDO company Credo Mobile Sprint CDMA 1900 http www.credomobile.com Embarq Sprint CDMA 1900 http www.embarq.com Defunct Excel Wireless Sprint CDMA 1900 http www.excelws.net Earthtones Unknown GSM http www.earthtones.com Donates all profits ... http www.fireflymobile.com Global Talk PCS Sprint CDMA 1900 http www.prepaidstations.com global talk pcs index.htm GSR Mobile Sprint CDMA 1900 http www.gsrmobile.com H2O Wireless AT&T GSM 850 1900 & UMTS 3G 850 1900 https www.h2owirelessnow.com Owned by Locus Telecom see below Helio Sprint CDMA ... Sprint CDMA 1900 http www.iwirelesshome.com Owned by Kroger Jitterbug Verizon CDMA 1900 http www.jitterbug.com kajeet Sprint CDMA 1900 http www.kajeet.com KORE Telematics AT&T, Verizon, Rogers GSM CDMA http www.koretelematics.com M2M Network Provider Liberty Wireless Sprint CDMA 1900 http www.libertywireless.com ... Wireless Sprint CDMA 1900 http www.mingowireless.com Movida Wireless Movida Sprint CDMA 1900 http www.movidacelular.com ... Omni Prepaid Verizon CDMA 800 1900 http www.omniprepaid.com OnStar Verizon CDMA 800 1900 http vzwshop.com onstar Page Plus Cellular Verizon CDMA 800 1900 http www.pagepluscellular.com PlatinumTel Sprint CDMA 1900 http www.platinumtel.com Pure Mobile Verizon CDMA 800 1900 http www.usepuremobile.com Pure TalkUSA AT&T GSM 850 1900 http www.puretalkusa.com Qwest Wireless Sprint CDMA 1900 Defunct Ready ... more details
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- Yemen Mobile
Infobox Company company name Yemen Mobile company logo File Yemen Mobile.jpg center 200 px The Yemen Mobile Logo company type Private company Private company slogan Pioneering Company..Promising Partnership foundation 2004 location Yemen industry Telecommunication s products CDMA Service provider homepage http www.yemenmobile.com.ye Yemen Mobile Yemen Mobile is a CDMA 2000 network provider founded in Yemen, 2004 by the Yemen ministry of telecommunication and is considered the first CDMA network operator in the Middle East. Yemen Mobile CDMA system is based on the Huawei HUAWEI Technologies. Prior to CDMA 2000, IS 95 was in use by some cities in Yemen like Aden . See also Sabafon , GSM proivder in Yemen. Spacetel , GSM proivder in Yemen. MTN Group , the new company after Spacetel. References 1 http www.yemenmobile.com.ye Yemen Mobile website 2 http www.huawei.com file download.do?f 6119 PDF file from HUAWI, the China CDMA manufacturer and provider Category Telecommunications companies of Yemen Category Mobile phone companies of Yemen ar ... more details
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- File:Our cat monster August 26 2007 Boulder Colorado.jpg
Summary Our cat. For my page. Taken on my cell cam. Licensing PD self date August 2007 Seemingly a Qualcom 3G CDMA. Casio? Military styled cell cam, 2.0 megapixel. License as PD. ... more details
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- File:Barker7code.svg
Summary Baseband representation of a Barker 7 binary code. These are used for spread spectrum cdma systems. Related file Barker7corr.svg, showing the autocorrelation function of it. Licensing GFDL self no disclaimers migration relicense ... more details
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- File:Talkingdrum network.jpg
Summary Olatunbosun Odeyemi Creative Director, Art Director, 3D Artist, web and interactive designer. One of my composition created for Starcomms, a CDMA telecom Company in Nigeria. Licensing PD self date March 2008 ... more details
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- Removable User Identity Module
www.cdg.org resources white papers files Smart Cards for CDMA Gemplus.pdf Why do CDMA Subscribers ... more details
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- Cell test
Cell test s ing may mean Entertaiment Cell Test Prison Break &mdash Cell Test , an episode of Prison Break Biology Cell culture assays Biopsy test &mdash testing cells from a biopsy Sickle cell test &mdash the test for sickle cell anemia Antigen leukocyte cellular antibody test Telecomm CDMA mobile test set &mdash CDMA cellular mobile phone tester Mobile Device Testing &mdash cell phone testing dab ... more details
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- Motorola v950
Infobox Mobile phone name Motorola Renegade v950 screen 2.2 240x320 internal, 1.6 120x160 external ringtone Polyphonic ringtone Polyphonic Sound memory MicroSD up to 8GB, and internal memory networks CDMA Sprint PCS connectivity Bluetooth 2.0 Bluetooth , USB Micro USB interface E.161 , 4 way navigation pad, dedicated external buttons, dynamic internal buttons network data connectivity EVDO RevA, Sprint Navigation capable size 53 x 104 x 17 mm weight 118g form Clamshell flip certifications MIL STD 810 The Motorola v950 Renegade is a clamshell style mobile phone, using CDMA technology. It is MIL STD 810 certified. The base phone model is a Motorola RAZR . The Motorola Renegade was released exclusively for Sprint, but unregistered phones can be registered to other CDMA networks. Category Motorola mobile phones ... more details
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- File:200Qinthesun.jpg
Summary Northern face of 200 Queen Street, Melbourne, as seen from level 10 open air garden. The midday sun is reflected on the glass wall. Image taken with my Nokia CDMA 6255. Licensing PD self date February 2008 ... more details
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- SMPT
SMPT may refer to the following SMPT e , of StoltMorsePortnoyTrewavas is the first album of the progressive rock supergroup Transatlantic. SMPT can also stand for Simultaneous MAC Packet Transmission , a multi rate CDMA based protocol designed to deliver transport level segments with high probability within a prespecified delay bound. disambig ... more details
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- IS-96A
multiple issues context October 2009 notability July 2008 unreferenced July 2008 Interim Standard 96A IS 96A is the speech coding standard specified for IS 95 CDMA networks. Long comment to avoid being listed on short pages Category 3rd Generation Partnership Project 2 standards Wireless stub ... more details
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- Aztrank
Primarysources date December 2008 Aztrank is the operator of the modern wireless digital CDMA 2000 Code Division Multiple Access telecommunication services in Azerbaijan . AZTRANK Company was established in 1996 and until 2005 major service was the trunk communication communications support. From the beginning of 2005 the company started providing CDMA 2000 wireless communications services. The main activity of the company is the development, improvement of the wireless telecommunication services based on modern technologies and the high quality, low price customer services. AZTRANK is offering its customers the CDMA technology phones of stationary and vehicle use provided by the one of the world s leading telecommunication equipment manufacturers, Huawei company. Current devices are working in the standard phone mode with landline phone numbers. At present, AZTRANK is offering its CDMA technology wireless services based on the Great Britain made station GPT , successfully used by the JV Azeurotel during the recent years. Currently network coverage areas are Baku and Absheron . External links http www.aztrank.az index.php?l en Category Communications in Azerbaijan Azerbaijan stub comm stub az Aztrank ... more details
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- Rise over thermal
Orphan date February 2009 In wireless communication systems, the rise over thermal ROT indicates the ratio between the total power received from wireless sources at a base station and the thermal noise ref A. J. Viterbi CDMA Principles of Spread Spectrum Communication , Addison Wesley Wireless Communications Series, May 1995, ISBN 0201633744 ref . The ROT is typically used as a measure of how congested a cellular network cellular telephone network is. The capacity of systems using CDMA code division multiple access is often determined by how high the acceptable level of ROT is References refs Category Telecommunications telecomm stub ... more details
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- UTRA-TDD HCR
UTRA TDD HCR , an acronym for UMTS Terrestrial Radio Access UTRA time division duplex Time Division Duplex TDD High Chip Rate HCR , is a 3GPP standardized channel access method based on a combination of Time division multiple access TDMA and CDMA known as TD CDMA . ref name Forkel cite web url http citeseerx.ist.psu.edu viewdoc summary?doi 10.1.1.11.3672 title Performance Comparison Between UTRA TDD High Chip Rate And Low Chip Rate Operation accessdate 2009 02 16 author Forkel et al. date 2002 ref References Reflist Category Universal Mobile Telecommunications System ... more details
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