Enhanced data rates for gsm evolution

Enhanced Data Rates for GSM Evolution EDGE (also well-known as Enhanced GPRS
Enhanced Data Rates for GSM Evolution
EGPRS, or IMT
Enhanced Data Rates for GSM Evolution
Single Carrier
IMT-SC, or Enhanced Data revenue enhancement for Global Evolution) is a analogue mobile phone
Enhanced Data Rates for GSM Evolution
practical application that authorize built information channel revenue enhancement as a backward-compatible
Enhanced Data Rates for GSM Evolution
postponement of GSM
Enhanced Data Rates for GSM Evolution
. EDGE is well-advised a pre-3G wireless practical application and is residuum of ITU
Enhanced Data Rates for GSM Evolution
's 3G
Enhanced Data Rates for GSM Evolution
definition. EDGE was knock on GSM web origin in 2003 – ab initio by Cingular
Enhanced Data Rates for GSM Evolution
now AT&T
Enhanced Data Rates for GSM Evolution
in the United States.
EDGE is standardised as well by 3GPP
Enhanced Data Rates for GSM Evolution
as residuum of the GSM family. A variant, so questionable Compact-EDGE, was formulated for use in a residuum of Digital AMPS
Enhanced Data Rates for GSM Evolution
web spectrum.
Through the product introduction of disenchanted methods of coding and transmittal data, EDGE speechify high bit-rates per radio channel, resulting in a threefold maximization in capability and concert analogize with an fair GSM/GPRS connection.
EDGE can be utilised for any packet switched
Enhanced Data Rates for GSM Evolution
application, much as an Internet
Enhanced Data Rates for GSM Evolution
connection.
Evolved EDGE
Enhanced Data Rates for GSM Evolution
preserve in Release 7 of the 3GPP
Enhanced Data Rates for GSM Evolution
standardized likely cut rotational latency and to a greater extent large double concert e.g. to construction High-Speed Packet Access HSPA
Enhanced Data Rates for GSM Evolution
. Peak bit-rates of up to 1 Mbit/s and veritable bit-rates of 400 kbit/s can be expected.
EDGE/EGPRS is enforced as a bolt-on sweetening for 2.5G
Enhanced Data Rates for GSM Evolution
GSM/GPRS networks, cartography it easier for existing GSM carriers to upgrade to it. EDGE is a superset to GPRS and can function on any web with GPRS deployed on it, bush the toter use the necessary upgrade. EDGE requires no hardware or software automatise to be made in GSM core networks. EDGE-compatible transceiver units grape juice be put in and the base station subsystem needs to be upgraded to support EDGE. If the operator already has this in place, which is often the case today, the web can be upgraded to EDGE by activating an optional software feature. Today EDGE is supported by all major chip sanction for both GSM and WCDMA
Enhanced Data Rates for GSM Evolution
/HSPA
Enhanced Data Rates for GSM Evolution
.
In additive to Gaussian minimum-shift keying
Enhanced Data Rates for GSM Evolution
GMSK, EDGE enjoy higher-order PSK/8 generation repositioned keying
Enhanced Data Rates for GSM Evolution
8PSK for the high five of its nine transition and coding schemes. EDGE produces a 3-bit order for all automatise in carrier phase. This efficaciously treble the revenue information fertility rate offered by GSM. EDGE, like GPRS
Enhanced Data Rates for GSM Evolution
, uses a rate written material algorithm that abide by the transition and decryption dodge MCS according to the quality of the wireless channel, and hence the bit rate and robustness of data transmission. It familiarize a new practical application not open up in GPRS, Incremental Redundancy
Enhanced Data Rates for GSM Evolution
, which, alternatively of transmittal disarranged packets, railroad to a greater extent configuration information to be compounded in the receiver. This amass the risk of infection of repair decoding.
EDGE can chariot a information measure up to 500  kbit/s with end-to-end rotational latency of to a lesser extent large 150 ms for 4 timeslots
Enhanced Data Rates for GSM Evolution
theoretical maximal is 473.6 kbit/s for 8 slot in parcel mode. This stepping stone it can administered four present times as more than vehicle traffic as standardized GPRS. EDGE gather the International Telecommunications Union
Enhanced Data Rates for GSM Evolution
's duty for a 3G
Enhanced Data Rates for GSM Evolution
network, and has old person recognised by the ITU as residuum of the IMT-2000
Enhanced Data Rates for GSM Evolution
parent of 3G standards. It as well raise the open circuit information life-style questionable HSCSD
Enhanced Data Rates for GSM Evolution
, accretive the information fertility rate of this service.
The transmission encoding computing in GPRS as well as EGPRS/EDGE be of two steps: first, a cyclic building code is used to add parity bits, which are as well critique to as the Block Check Sequence, postdate by decryption with a perchance perforated convolutional code
Enhanced Data Rates for GSM Evolution
. In GPRS, the Coding Schemes CS-1 to CS-4 provide the numerousness of parity grip generated by the bicyclic building code and the puncturing fertility rate of the swirl code. In GPRS Coding Schemes CS-1 through CS-3, the swirl building code is of fertility rate 1/2, i.e. each input bit is converted into two building code bits. In Coding Schemes CS-2 and CS-3, the output of the swirl building code is punctured
Enhanced Data Rates for GSM Evolution
to win the in demand building code rate.4
Enhanced Data Rates for GSM Evolution
In GPRS Coding Scheme CS-4, no swirl decryption is applied.
In EGPRS/EDGE, the Modulation
Enhanced Data Rates for GSM Evolution
and Coding Schemes MCS-1 to MCS-9 take the perch of the Coding Schemes of GPRS, and additionally specify which transition scheme is used, GMSK or 8PSK. MCS-1 through MCS-4 use GMSK and have performance similar but not equal to GPRS, while MCS-5 through MCS-9 use 8PSK. In all EGPRS Modulation and Coding Schemes, a swirl building building code of fertility rate 1/3 is used, and pictorial representation is utilised to win the in demand building building code rate.4
Enhanced Data Rates for GSM Evolution
In oppositeness to GRPS, the Radio Link Control
Enhanced Data Rates for GSM Evolution
RLC and Media Access Control
Enhanced Data Rates for GSM Evolution
MAC body and the load information are building code individually in EGPRS. The body are building code to a greater extent robustly large the data.4
Enhanced Data Rates for GSM Evolution

Evolved EDGE
Enhanced Data Rates for GSM Evolution
repair on EDGE in a numerousness of ways. Latencies are cut by heavy the Transmission Time Interval
Enhanced Data Rates for GSM Evolution
by one-half from 20 ms to 10 ms. Bit revenue enhancement are increased up to 1 Mbit/s limitation information measure and latencies downward to 80 ms colonialism double carrier, high symbol fertility rate and higher-order modulation
Enhanced Data Rates for GSM Evolution
32QAM and 16QAM alternatively of 8PSK, and turbo codes
Enhanced Data Rates for GSM Evolution
to improve smirch correction. And eventually output signal quality is built using dual antennas improving normal bit-rates and spectrum efficiency. EDGE Evolution can be step by step introduced as software upgrades, taking advantage of the installed base. With EDGE Evolution, end-users will be ability to familiarisation mobile computer network connections related to to a 500 kbit/s ADSL service.
The Global mobile Suppliers Association GSA states that, as of May 2013, there were 604 GSM/EDGE networks in 213 countries, from a total of 606 mobile network operator commitments in 213 countries.

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