Base Band 5, a generation of the baseband implemented in the latest Nokia mobile phones
Digital baseband signal are carried over the fiber, usually using OBSAI or CPRI standard.
In May 2011, it was announced that Nvidia had agreed to acquire Icera, a baseband chip making company in the UK, for $367 million in cash.
In practice this criterion is applied to baseband filtering by regarding the symbol sequence as weighted impulses (Dirac delta function).
Initially, the baseband pass range used was 200 Hz to 2500 Hz but later the International Telecommunication Union set a standard of 300 Hz to 3.4 kHz with 4 kHz spacing.
It also carried a PSK31 Linear/FM Satellite translator accepting 3 kHz SSB channel in the 10 meter band at 29.4 MHz and repeating that in baseband on a VHF or UHF narrow-band FM downlink.