Bit Rate and bit duration

[rameshrai]

Hi,

Does anyone know the the bit rate and bit duration used in different communication system? For example what is the bit rate used for ADSL, GSM mobile communication, satellite system? A computer signal is sent to ADSL modem for example, what is the bit rate and duration of the computer(baseband signal). Are there any standard on this?

Thanks,
Ramesh

 

[unclejed613]

once again, google is your friend......
https://en.wikipedia.org/wiki/Asymmetric_digital_subscriber_line

bit rate and bit duration are inversely proportional in any communication system.... but since there are differing modulation schemes and error correction methods, it's not necessarily a direct 1:1 relationship.... some modulation schemes result in up to bit rates of 4 times the bandwidth, but redundancy and error correction usually reduce this to bit rates of 2 or 3 times the bandwidth, or even less than 1 times the bandwidth in some cases.