| EA |
Economic Area |
A geographic area over which a WCS operator is licensed to provide service. EAs are a group of counties in metropolitan areas having common financial, commercial and economic ties and were first used to license WCS service in the late '90s. EAs are about the size of a cellular MSA and cross state lines in some instances. EAs are used by the FCC to define areas of economic interest and are grouped into larger areas called REAGs. |
| Eb/N0 |
Bit Energy-to-Noise Density |
The ratio of bit energy to noise density. This value is used to specify the lower limit of operation in most digital communications systems and is also used to measure radio channel performance. |
| EDGE |
Enhanced Data for Global Evolution |
A technology that gives GSMA and TDMA similar capacity to handle services for the third generation of mobile telephony. EDGE was developed to enable the transmission of large amounts of data at a high speed, 384 kilobits per second. (It increases available time slots and data rates over existing wireless networks.) |
| EGPRS |
Enhanced General Packet Radio Service |
An enhancement to GPRS that improves spectral efficiency and data rates
by adding new modulation and coding schemes. |
| EFR |
Enhanced Full Rate |
|
| EHF |
Extremely High Frequency |
The RF spectrum between 30 GHz and 300 GHz. |
| EIA |
Electronic Industry Association |
A trade association and standards setting organization in the USA. |
| EIR |
Equipment Identity Register |
|
| EIRP |
Effective Isotropic Radiated Power |
|
| encryption |
|
A cryptographic technique utilizing a digital key to scramble and hence "lock" data in such a manner that it cannot be descrambled and decoded without the key. |
| EPOC |
|
An operating system that turns voice-oriented handsets into Mediaphones and Wireless Information Devices. EPOC places a lighter load on the processor compared to present PDA operating systems and thus has the capacity to enhance the multimedia capacity of mobile phones. EPOC is being developed by Symbian, a joint company of Psion, Nokia, Ericsson, Motorola and Matsushita (Panasonic). It constitutes an open platform optimized for mobile phone use. |
| ERMES |
European Radio Message System |
A pan-European wide area paging network working in Europe, the Middle East and Asia. |
| error correction |
|
The process of correcting errors in data transmitted over a radio channel using forward error correction (FEC) techniques. |
| ESMR |
Enhanced Specialized Mobile Radio |
The application of second generation wireless technology to the Specialized Mobile Radio Services. |
| ESN |
Electronic Serial Number |
|
| ETACS |
Extended Total Access Communications System |
The analog mobile phone network developed in the UK and available in Europe and Asia. |
| E-TDMA |
Enhanced TDMA |
|
| ETSI |
European Telecommunications Standard Institute |
The European standardization body for telecommunications. |
| EVM |
Error Vector Magnitude |
|
| extranet |
|
The extension of a company's intranet out onto the Internet, e.g. to allow selected customers, suppliers and mobile workers to access the company's private data and applications via the World Wide Web. Generally an extranet implies real-time access through a firewall of some kind. |
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