UMTS PROTOCOL STACK

Posted on February 17, 2012 by nethelp101

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Decibel

Posted on January 1, 2012 by nethelp101

A decibel or dB measures power or intensity. Most often, it is used to say how loud a sound is. At the moment, the decibel is not an SI unit. dB are units of sound mostly for consensus on hearing protection.

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Radio Frequency – RF

Posted on January 1, 2012 by nethelp101

Radio frequency (RF) is a rate of oscillation in the range of about 3 kHz to 300 GHz, which corresponds to the frequency of radio waves, and the alternating currents which carry radio signals. RF usually refers to electrical rather than mechanical oscillations, although mechanical RF systems do exist.

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Signal strength – Power

Posted on January 1, 2012 by nethelp101

In telecommunications, particularly in radio, signal strength refers to the magnitude of the electric field at a reference point that is a significant distance from the transmitting antenna. It may also be referred to as received signal level or field strength. Continue reading →

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Received signal strength indication – RSSI

Posted on January 1, 2012 by nethelp101

In telecommunications, received signal strength indicator (RSSI) is a measurement of the power present in a received radio signal.

RSSI is a generic radio receiver technology metric, which is usually invisible to the user of the device containing the receiver, but is directly known to users of wireless networking of IEEE 802.11 protocol family. Continue reading →

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