EDGE Full Form

EDGE is an enhanced version of GSM and offers high speed 3G built on GSM. It's a form of a data system that runs on the GSM network and allows for faster data transmission. In the same amount of time, it can transmit three times more bits than GPRR. EDGE is an "add-on" to GPRS. It cannot function independently. In the United States, AT&T implemented it on GSM networks in 2003. In this article, we will discuss edge full form, features, advantages and GSM Edge modulation coding schemes.

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Data Speed

Without affecting the existing frequency reuse arrangement, EDGE has successfully replaced GSM. Technically, EDGE gives a speed of 384kbps (far faster than the GPRS data rate), although the industry labels it as 2.75G.

Edge Long Form

Edge long form is Enhanced Data rates for GSM Evolution. It is a digital mobile phone technology that allows improved data transmission rates which is three times the data capacity of GPRS.

Key Elements Added in EDGE

• Use of 8PSK: The modulation scheme was altered to 8PSK, which allows for the transmission of three bits per symbol.

• Base Station: The base station has undergone some minor adjustments.

• Upgrade to Network Architecture: It provides IP-based transfer rates, necessitating the addition of additional network nodes.

• Mobile Stations: Because each set cannot be upgraded, it is necessary to provide a GSM EDGE handset in order to use EDGE services.

Features

• Increase the data rate, for example, by providing high speed on GSM radio carriers, as given by broadband.

• It has the ability to retransmit a packet with more robust coding, allowing for re-segmentation.

• EDGE packets can be addressed up to 2048 bytes, but GSM packets can be addressed from 1 to 128 bytes.

• EDGE has a 1024-by-1024 window size, while GSM has a 64-by-64-by-64-by-64-by-64-by-64-by-64-by-

• When a mistake occurs, EDGE minimises the number of bursts that must be retransmitted.

• It allows multimedia file transfer, web browsing and video conferencing through wireless terminals.

• It enables operators to triple the data rate of subscribers and provide extra capacity to their voice communications.

• To accommodate the same amount of traffic as GSM networks, it requires fewer radio resources.

Advantages

• Speed: It can improve network speed by lowering latency.

• Security: The distributed nature of edge architecture makes security protocols easier to implement.

• Scalability: Edge has made scaling operations easier than ever before for corporations and businesses.

• Versatility: Edge's scalability also lends it to a wide range of applications.

GSM EDGE Modulation Coding Schemes

TCP/IP packets will make up the majority of the data transmitted over an EDGE link. Because these packets are larger than a single EDGE packet payload, the TCP/IP packets must be divided into smaller sections, which are referred to as "chunks." These chunks come in a variety of sizes, including 22, 28, 34, and 37 bytes (or "octets"). The 37-octet chunk can be composed entirely of data to be transferred, or it can be padded with three dummy octets from a 34-octet chunk.

With EDGE, you can choose from nine different Modulation and Coding Schemes (MCS). Each one is assigned a number between 1 and 9. These provide varying levels of error prevention (and coding rate), resulting in a change in net data throughput. The system determines how many bit mistakes there are and modifies the coding scheme accordingly. It will automatically try to adopt the scheme that will result in the best throughput, but it will respond to the current conditions and change as necessary.

The various coding techniques are divided into three classes or families, denoted by letters, and referred to as classes A, B, and C. Within a class, the coding systems are utilised in tandem and complement one another. MCS-3, MCS-6, MCS-8, and MCS-9 are members of the MCS-3, MCS-6, MCS-8, and MCS-9 families. MCS-2, MCS-5, and MCS-7 are members of the MCS-2, MCS-5, and MCS-7 families.MCS-1 and MCS-4 are the members of family C. If a block communicated in one of the coding schemes is not acknowledged, it can be sent as two blocks, for example with a coding scheme in the same family.

If a block communicated using MCS-7 becomes corrupted, it might be present as two MCS-5 blocks or four MCS-2 blocks.

The various EDGE modulation coding techniques are employed as needed to achieve the best possible balance of high data rate and low error rate. To keep the link's integrity when signal levels drop and noise levels rise, higher levels of error correction are required.

Evolved EDGE

On top of the original version of EDGE, there are a number of new elements. A number of suggestions have been made to offer the necessary upgrades. The following are some of them:

Higher Order Modulation: The vanilla version of EDGE employs 8PSK modulation to provide a speed boost over GPRS. This works by allowing three bits per symbol to be encoded. Evolved EDGE (E-EDGE) employs higher-order Quadrature Amplitude Modulation (QAM) in the form of 16QAM (4 bits per symbol) and 32QAM (5 bits per symbol). However, because there is a trade-off with higher modulation orders, 32QAM can only be employed in perfect conditions. They can give larger data speeds, but to provide error-free reception, they need a higher signal to noise ratio.

Receiver Diversity: The Evolved EDGE system includes a receiver diversity strategy, in which a second receiver decodes the incoming signal in such a way that it can be received with different properties, such as location or polarisation. In this approach, if one receiver's signal is weak, there's a chance the signal on the other is stronger and can be received with fewer errors.

Simultaneous Channels: The Evolved EDGE standard provides for the usage of two channels, allowing for a two-fold increase in capacity.

Simultaneous transmission and reception:  To conserve money, the Time Division Multiplexing technique of GSM, then GPRS, and finally EDGE, ensured that the transmitter and receiver in a mobile handset were never active at the same time. This was accomplished by transmitting in a one-time slot and receiving in another. Even when numerous slots are used, one on either side of the reception slot(s) is maintained free to allow for transmitting/receiving settling.

As a result of improved filtering between the transmitter and receiver, evolved EDGE allows for simultaneous transmission and receiving. Due to this phenomenon, most EDGE mobiles on the market are limited to four-time slots per carrier. Separate transmission and reception chains, on the other hand, might allow mobile phones to use all eight of a carrier's time slots.