The term modulation denotes the process of transforming the information generated by a source into a signal that is suitable for transmission over a physical channel, in order to convey it to a receiver. When the information is represented by a sequence of bits, {b_ℓ}, we talk of digital modulation. The binary sequence detected by the receiver, {c_ℓ}, may well be affected by errors, i.e. c_ℓ ~= b_ℓ for some values of ℓ, due to distortion and noise introduced by the transmission medium. In this chapter we present a survey of the main modulation techniques used in modern digital communication systems (e.g., PAM, PSK, QAM, etc.). The performance of each modulation/demodulation method is evaluated with reference to the bit error probability, Pbit = P[c_ℓ ~= b_ℓ], and a comparison of the various approaches is given.

Digital modulation systems

ERSEGHE, TOMASO
2011

Abstract

The term modulation denotes the process of transforming the information generated by a source into a signal that is suitable for transmission over a physical channel, in order to convey it to a receiver. When the information is represented by a sequence of bits, {b_ℓ}, we talk of digital modulation. The binary sequence detected by the receiver, {c_ℓ}, may well be affected by errors, i.e. c_ℓ ~= b_ℓ for some values of ℓ, due to distortion and noise introduced by the transmission medium. In this chapter we present a survey of the main modulation techniques used in modern digital communication systems (e.g., PAM, PSK, QAM, etc.). The performance of each modulation/demodulation method is evaluated with reference to the bit error probability, Pbit = P[c_ℓ ~= b_ℓ], and a comparison of the various approaches is given.
2011
Principles of Communications networks and systems
9780470971918
File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11577/2421990
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 0
  • ???jsp.display-item.citation.isi??? 0
  • OpenAlex ND
social impact