As delivered, the physical layer is OFDM, sampled at 250 kHz, with 512 differential phase shift keying channels from 42 89 kHz.
32.
Digital data can be sent by shifting the carrier's frequency among a set of discrete values, a technique known as frequency-shift keying.
33.
�lectricit?de France ( EDF ) developed a system called " spread frequency shift keying " or S-FSK . See IEC 61334.
34.
In a facsimile receiver, a device that changes the signal modulation from frequency-shift keying ( FSK ) to amplitude modulation ( AM ).
35.
BPSK ( also sometimes called PRK, phase reversal keying, or 2PSK ) is the simplest form of phase shift keying ( PSK ).
36.
Communications with the ground are achieved through a 435.060 MHz uplink audio frequency-shift keying to provide a datarate of 1, 200 bits per second.
37.
Throughput capacity and reliable distance of the link depends on common radio link constraints and the modulation method used-either phase-shift keying or amplitude modulation.
38.
For more sophisticated methods, see amplitude-shift keying, Kansas City standard and frequency-shift keying . talk ) 14 : 46, 7 June 2010 ( UTC)
39.
For more sophisticated methods, see amplitude-shift keying, Kansas City standard and frequency-shift keying . talk ) 14 : 46, 7 June 2010 ( UTC)
40.
An amateur radio HFIP network called HFLINK uses Automatic Link Establishment for initiating data communications, with ARQ 8FSK frequency-shift keying and PSK phase-shift keying signals.
