EDGE Technology

Enhanced Data rates for GSM Evolution (EDGE) or Enhanced GPRS (EGPRS), is a digital mobile phone technology that allows to increase data transmission rate and improve data transmission reliability. It is generally classified as a 2.75G network technology. EDGE has been introduced into GSM networks around the world since 2003, initially in North America.It can be used for any packet switched application such as an Internet connection. High-speed data applications such as video services and other multimedia benefit from EGPRS' increased data capacity. EDGE Circuit Switched is a possible future development.EDGE/EGPRS is implemented as a bolt-on enhancement to 2G and 2.5G GSM and GPRS networks, making it easier for existing GSM carriers to upgrade to it. EDGE/EGPRS is a superset to GPRS and can function on any network with GPRS deployed on it, provided the carrier implements the necessary upgrade.

Transmission techniques
In addition to Gaussian minimum shift keying (GMSK), EDGE uses 8 phase shift keying (8PSK) for the upper five of its nine modulation and coding schemes. EDGE produces a 3-bit word for every change in carrier phase. This effectively triples the gross data rate offered by GSM. EDGE, like GPRS, uses a rate adaptation algorithm that adapts the modulation and coding scheme (MCS) according to the quality of the radio channel, and thus the bit rate and robustness of data transmission. It introduces a new technology not found in GPRS, Incremental Redundancy, which, instead of retransmitting disturbed packets, sends more redundancy information to be combined in the receiver. This increases the probability of correct decoding.
EDGE can carry data speeds up to 236.8 kbit/s for 4 timeslots (theoretical maximum is 473.6 kbit/s for 8 timeslots) in packet mode and will therefore meet the International Telecommunications Union's requirement for a 3G network, and has been accepted by the ITU as part of the IMT-2000 family of 3G standards. It also enhances the circuit data mode called HSCSD, increasing the data rate of this service.

EDGE Evolution
EDGE Evolution improves on EDGE in a number of ways. Latencies are reduced by lowering the Transmission Time Interval by half (from 20 ms to 10 ms). Bit rates are increased using dual carriers, higher symbol rate and higher-order modulation (32QAM and 16QAM instead of 8-PSK), and "Turbo Codes" to improve error correction. And finally signal quality is improved using dual antennas. An EDGE Evolution terminal or network can support only some of these improvements, or roll them out in stages.

Wi-Fi Technology

If you've been in an airport, coffee shop, library or hotel recently, chances are you've been right in the middle of a wireless network. Many people also use wireless networking, also called WiFi or 802.11 networking, to connect their computers at home, and an increasing number of cities use the technology to provide free or low-cost Internet access to residents. In the near future, wireless networking may become so widespread that you can access the Internet just about anywhere at any time, without using wires.
WiFi has a lot of advantages. Wireless networks are easy to set up and inexpensive. They're also unobtrusive - unless you're on the lookout for a place to use your laptop, you may not even notice when you're in a hotspot. In this article, we'll look at the technology that allows information to travel over the air. We'll also review what it takes to create a wireless network in your home.


IEEE 802.11 also known by the brand Wi-Fi, denotes a set of WLAN standards developed by working group 11 of the IEEE LAN/MAN Standards Committee(IEEE 802). The term 802.11x is also used to denote the set of amendments to the standard. The term IEEE 802.11 is also used to refer to the original 802.11 (1997), which is now sometimes called "802.11 legacy".


The 802.11 family currently includes multiple over-the-air modulation techniques that all use the same basic protocol. The most popular techniques are those defined by the b/g and a amendments to the original standard; security was originally purposefully weak due to multi-govermental meddling on export requiremnts and was later enhanced via the 802.11i amendment after govermental and legislative changes. 802.11n is a new multi-streaming modulation technique that has recently been developed; the standard is still under draft development, although products designed based on proprietary pre-draft versions of the standard are being sold. Other standards in the family (c–f, h, j) are service amendments and extensions or corrections to previous specifications. 802.11b was the first widely accepted wireless networking standard, followed by 802.11g and then 802.11a.

My Home City...Simply Beautiful

I am proud to be a part of "Gods Own Country"…well talking more specifically about Cochin..anyway I don’t think there is need of an introduction about the “Queen Of Arabian Sea”

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See it once you will fall in love with Queen.............

Vista..The Magic

Windows Vista is a line of graphical operating systems used on personal computers, including

home and business desktops, notebook computers, Tablet PCs, and media centers. Prior to its

announcement on July 22, 2005, Windows Vista was known by its codename "Longhorn".

Development was completed on November 8, 2006; over the following three months it was

released in stages to computer hardware and software manufacturers, business customers, and

retail channels. On January 30, 2007, it was released worldwide to the general public, and

was made available for purchase and downloading from Microsoft's web site. The release of Windows Vista comes more than five years after the introduction of its predecessor, Windows XP, making it the longest time span between two releases of Microsoft Windows.

Windows Vista contains hundreds of new features; some of the most significant include an updated graphical user interface and visual style dubbed Windows Aero, improved searching features, new multimedia creation tools such as Windows DVD Maker, and completely redesigned networking, audio, print, and display sub-systems. Vista also aims to increase the level of communication between machines on a home network using peer-to-peer technology, making it easier to share files and digital media between computers and devices. For developers, Vista includes version 3.0 of the .NET Framework, which aims to make it significantly easier for developers to write high-quality applications than with the traditional Windows API.

MY SUN WORLD

Have fun & joy..........under de sun............learn de secret of existense........