... co-ax Encoding TechniquesDigital data, digital signal Analog data, digital signalDigital data, analog signal Analog data, analog signal FSK on Voice Grade Line Phase Shift KeyingPhase ... oneNote: this is a differential encoding schemeUsed by IEEE 802 .5 William StallingsData and Computer Communications Chapter 5 Data Encoding Biphase Pros and ConsConAt least one transition ... NRZEach signal element only represents one bitIn a 3 level system could represent log23 = 1 .58 bitsReceiver must distinguish between three levels (+A, -A, 0)Requires approx. 3dB more...