| NADC |
North American Digital Cellular |
|
| NAM |
Number Assignment Module |
The programmable module in an AMPS analog phone used to contain the MIN, ESN, home system ID and other information. |
| N-AMPS |
Narrowband Advanced Mobile Phone System |
Combines the AMPS transmission standard with digital signaling information to effectively triple the capacity of AMPS while adding basic messaging functionality. |
| NMC |
Network Management Center |
An operations center used to manage network resources such as the MSC, location registers and base stations. |
| NMT |
Nordic Mobile Telephony |
The common Nordic standard for analog mobile telephony as established by the telecommunications administrations in Sweden, Norway, Finland and Denmark in the early 1980s. NMT systems have also been installed in some European countries, including parts of Russia, and in the Middle East and Asia. NMT is operated in 450 MHz and 900 MHz bands. |
| NMT-450 |
Nordic Mobile Telephony - 450 |
An early cellular system developed and operated in northern Europe utilizing the 450 MHz band. |
| node |
|
A point of connection in a network. A node is often a device on the network
that can process a transmission or forward it to anogther node. |
| Node B |
|
3G UMTS base station transceiver. Node B (also called the base station
controller or radio base station) provides the gateway between the handset/RF
interface and the radio network controller via the Iub interface. |
| noise figure |
|
A figure of merit for receivers and preamplifiers representing the amount of excess noise added to the signal by the amplifier or receiving system itself. The lower the noise figure, the less excess noise is added to the signal. |
| NSS |
Network Switching Subsystem |
|
| Nyquist rate |
|
The minimum sampling rate proposed by Nyquist for converting a band limited waveform to digital pulses. The rate must be at least twice the highest frequency of interest in the waveform being sampled. |
