Cellular, it is specified under standard IS-136, having been initially issued
as IS-54.
NMT Nordic Mobile Telephone. The analogue (1G) standard that was developed
in Scandinavia and was the first mobile phone system to be commercially
deployed (1979).
Node B A terminology used within UMTS to denote a base station.
Open loop This refers to the fact that CDMA systems in particular require considerable
degrees of power control. Such control is normally undertaken with
feedback loop in operation between the base station and the mobile
handset. However, ther e are some instances (for example when a handset
has just been switched on and is registering) when this information is not
available. The handset will then operate ‘open loop’, making an estimate
of