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Some useful links to CDMA, IS-95, IS-707, cdma2000 and 1XRTT
resources.
Also see our GSM, GPRS and UMTS
sections.
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Latest CDMA Headlines:
FreshPatents.com Method and apparatus for improved channel estimation for communications signal processing
Teachings presented herein present a “whitening” channel estimation method and apparatus that produce high-quality net channel estimates for processing a received signal, such as a received CDMA signal. Processing includes forming an initial least squares problem (for medium channel estimates) using known pilot values and corresponding pilot observations for the...
ZDNet Symbian to ease app building for China Mobile
The Symbian Foundation and China's biggest mobile operator will provide a streamlined way for developers to submit apps to China Mobile's store and will promote the TD-SCDMA standard
i-Mode News Oct. 30, 2009 - Companies Move Ahead with LTE Mobile-Terminal Platform
of advanced mobile services. The company serves more than 55 million customers in Japan, including 48 million using i-mode, the popular mobile e-mail/Internet platform, and 50 million users of FOMA, the original 3G mobile service based on W-CDMA
GPRS News Flexible circuit antenna
efficiency of over 50% on all cellular bands and GPS for GSM, CDMA, DCS, PCS, WCDMA, UMTS, HSPA, GPRS and EDGE. It has been designed using innovative design techniques making this off-the-shelf antenna suitable for many devices that previously would have
CDMA News MediaTek, Qualcomm seal patent deal
other to utilize technology covered by their respective patent portfolios. The arrangement, which covers code division multiple access (CDMA) and wideband CDMA (WCDMA) essential patents held by the world's largest fabless chip supplier, is crucial for
CDMA News Media Tek seals patent deal with Qualcomm, shares rise
affect MediaTek's profits as fierce competition has pressed the firm to lower chip prices. The arrangement includes CDMA and WCDMA essential patents, with respect to all integrated circuit products, including CDMA and WCDMA products. Customers of each
CDMA News Airtel slips to third spot in new user additions in Oct [The Economic Times, India]
and over 3.8 million added by Tata Teleservices. All the mobile operators in the country (GSM and CDMA) have added over 16 million new subscribers in the month of October. The total number of GSM users in the country has now risen to 482 million. While
CDMA News RFMD Selected By Smartphone Manufacturer To Supply High Performance Cellular Switch
compound semiconductors, announced that RFMD has been selected by a leading manufacturer of smartphones to support two upcoming CDMA smartphones
CDMA News Qualcomm and MediaTek Announce Patent Agreement
According to the two companies, the agreement is related to their patent portfolios, including essential solutions in the CDMA and WCDMA areas, and also related to all integrated circuit products, such as CDMA and WCDMA products. [ADMARk=1]While the
CDMA News Verizon BlackBerry Curve 8530 Now Available in Black and ‘Smoky Violet’
Curve 8530 will set you back $99.99 on a 2-year contract after a $100 online discount. This CDMA Curve packs WiFi, Bluetooth, OpenGL ES support (3D gaming here we [...] Full story
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3Q09 Cellular Contracts, Deployments, and Subscriptions Database This report provides an in-depth look at cellular wireless technologies being deployed around the world. It provides summary data by bandwidth, technology, and region in pivot-tables for quick analysis of trends using a combination of subscriptions, contract awards, and deployments. Furthermore, detailed data on contract awards for upcoming networks and new network deployments are provided in pivot-tables for targeted views by country, service provider, and infrastructure vendor for in-depth analysis.
This report includes:
- Five-year subscriptions forecasts by wireless technology and region (CDMA, GSM/EDGE, CDMA EV-DO, TD-SCDMA, WCDMA/HSPA/HSPA+, and LTE)
- Contract awards and deployments by wireless technology, region, country, service provider, infrastructure vendor, date, availability, and value.
Published By: In-Stat
Date Published: Jan 2009 * * * * * * 3Q09 Cellular Subscriptions and Handsets Database This report provides a summary by bandwidth, technology, and region in pivot-tables for quick analysis of trends using a combination of subscriptions as well as handset shipments and revenues.
This report includes:
-Five-year subscriptions forecasts by wireless technology and region (CDMA, GSM/EDGE, CDMA EV-DO, TD-SCDMA, WCDMA/HSPA/HSPA+, and LTE)
-Five-year handset shipment and revenue forecasts by technology and region.
Published By: In-Stat
Date Published: Jan 2009 * * * * * *
Useful Links and Interesting Sites
| CDMA Development Group (CDG) |
CDMA White
Papers covering security, performance, migration, etc.
CDMA Technology CDMA
consistently provides better capacity for voice and data
communications than other commercial mobile technologies, allowing
more subscribers to connect at any given time, and it is the common
platform on which 3G technologies are built. CDMA is a "spread
spectrum" technology, allowing many users to occupy the same
time and frequency allocations in a given band/space. As its name
implies, CDMA assigns unique codes to each communication to
differentiate it from others in the same spectrum. In a world of
finite spectrum resources, CDMA enables many more people to share
the airwaves at the same time than do alternative technologies.
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| CDMA Certification Forum |
The CDMA
Certification Forum (CCF) is a partnership of CDMA2000 vendors
and operators worldwide that has established and maintains a single
global device certification process. The CCF process allows quick
and affordable testing and certification of devices to meet
prescribed international standards and performance requirements. |
| cdma-solutions.com |
3G CDMA training courses from Basic to Advanced on cdma2000, CDMA
1xEV-DO, CDMA 1xEV-DV, Wireless IP. |
| CETECOM |
Test platforms for GSM, GPRS and W-CDMA. |
| LDPost |
All
About CDMA Today there are two major standards for cell phone
technology. CDMA and GSM. Almost all phones in the United States
operate on either of these networks. However, the average person
tends to be unfamiliar with these terms. Common cell phone service
providers like Verizon and Sprint use CDMA technology, while
carriers like T-Mobile, and Cingular operate on the GSM network.
Prepaid Cell Phones Premium
quality, honest, reliable calling cards. Prepaid mobile phones,
international long distance, toll free 800 numbers, office anywhere,
prepaid Internet, T1 Voice/Data lines. Reliable, easy to access
bilingual customer support. |
| Lucent |
CDMA
Products |
| CDMA University |
CDMA University
training is offered by the CDMA Development Group (CDG). Our
goal is to provide relevant CDMA technical training solutions by
leading experts in the field. Currently, we are associated with
Qualcomm to deliver courses that cover a broad range of topics
including foundational, advanced topics, network planning,
characterization and optimization. Our experts can customize
training to meet your specific needs |
| Qualcomm |
Network
Design and Optimization — White Papers |
| Nortel
Networks |
Code
Division Multiple Access (CDMA) technology is a driving force
behind wireless networks around the globe - according to the CDMA
development group (CDG) there were more than 202 million CDMA
subscribers worldwide at the end of March 2004. |
| Radio-Electronics.Com |
The
Basics of IS-95, cdmaOne IS-95 was the first CDMA system to gain
widespread use and is found widely in North America. Its brand name
is cdmaOne and the initial specification for the system was IS95A,
but its performance was later upgraded under IS-95B. It is this
later specification that is synonymous with cdmaOne. Apart from
voice the system is also able to carry data at rates up to 14.4 kbps
for IS-95A and 115 kbps for IS-95B. |
| RTX |
TD-SCDMA (12/02, PDF) China’s
chance TD-SCDMA (3G) mobile technology has enormous potential in the
largest mobile market in the world, with sales of over five million
handsets a month. China has no wish to be dependent on Western
technology, and this has led to investment in the new standard.
TD-SCDMA enables the rapid spread of telecommunications to thinly
populated areas, and the broad transmission bandwidth also provides
access to the Internet. |
| Spread Spectrum Scene Online |
Kizito Tshilumba
Kasengulu - About The Capacity of a DS Spread Spectrum CDMA Cellular
System (300Kb, PDF) explains and gives an expression for the
cell capacity of the uplink in the ideal case of perfect automatic
power control. Gives the reasons why we need strong power control,
its relation to the near-far problem and the cell capacity. Finally
gives a second expression for the cell capacity of the uplink.
Phil Flikkema's
(USF) Briefing - Introduction to Spread Spectrum (PDF)
Phil Flikkema's
(USF) Briefing - Overview of Modulation Techniques for Wireless
(PDF)
Prof. Randy H.
Katz' (UCB) Briefing - CS294-7: Digital Modulation (PDF)
Prof. Randy H.
Katz' (UCB) Briefing - CS294-7: Cellular Telephony (PDF)
Prof. Randy H.
Katz' (UCB) Briefing - CS294-7: Radio Propagation (PDF)
SSS Online's
Technical Briefings Archive |
| Dr. Bernd-Peter Paris |
Spread
Spectrum Multiple Access Article |
| Motorola |
IS-95
CDMA Cellular System Solution RF Switching, Receiver,
Transmitter, Synthesis, Baseband, Power |
| WAP Forum |
Where Does WAP fit in? WAP brings Internet content and advanced
services to digital cellular phones and other wireless terminals.
WAP is a global wireless protocol specification that works across
the following wireless network technology types: GSM (900, 1800
& 1900MHz), PDC, CDMA (IS-95 and/or IS-707), US-TDMA (IS-136),
iDEN (ESMR), DataTAC, Mobitex, CDPD, DECT, PHS, FLEX, and ReFLEX.
Applications using WAP are scaleable across a variety of transport
options and device types. A common standard offers potential
economies of scale, encouraging cellular phone and other device
manufacturers to invest in developing compatible products. With WAP,
cellular and other wireless network carriers and content providers
are able to develop new differentiated service offerings as a way to
attract new subscribers, while consumers benefit from more and
varied choices in mobile communications applications, advanced
services and Internet access. |
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