Abstract
The turbulence in an FSO link causes fluctuations in the intensity and the phase of the received signal. These fluctuations ultimately lead to the degradation in the link error probability and limit the system performance. In this chapter, bit error rate (BER) performance of coherent subcarrier (SC-BPSK and SC-QPSK) and noncoherent (OOK and \(\mathbb{M}\)-PPM) schemes in turbulent atmospheric environment have been analyzed. Multilevel modulation schemes which are more bandwidth efficient are also discussed in this chapter. Section 5.1 gives the system model which includes a brief description on transmitter, atmospheric channel, and receiver. In Sect. 5.2, the BER performance of FSO system in atmospheric turbulent channel for both coherent (SC-BPSK and SC-QPSK) and noncoherent (OOK and \(\mathbb{M}\)-PPM) modulation schemes have been analyzed. Other bandwidth-efficient modulation techniques like pulse- amplitude modulation (PAM), differential pulse-position modulation (DPPM), and differential amplitude pulse position modulation (DAPPM) are discussed in this section. Finally, in the last section, BER performance of different modulation schemes are summarized.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
