Title :
Efficiency of different modulation types in optical systems with limited bandwidth
Author_Institution :
Inst. of Telecommun., Warsaw Univ. of Technol., Warsaw, Poland
Abstract :
Efficiency of PAM, CAP and OFDM/DMT modulation for optical band-limited channels is analyzed theoretically. It is shown that for the same transmitted optical power, and same BER they offer similar data throughputs. However, when the light source has limited dynamics the crucial factor is the peak to average power ratio of the modulating signal. This is the greatest for OFDM/DMT and the least for PAM. Consequently for a given source the average signal power is most limited for OFDM/DMT and least restricted for PAM.
Keywords :
OFDM modulation; data communication; error statistics; optical communication; optical modulation; BER; CAP; OFDM-DMT modulation; PAM; data throughputs; modulating signal; modulation types; optical band-limited channels; optical power; optical systems; power ratio; Bit error rate; Light sources; Modulation; Noise; OFDM; Receivers; Throughput; CAP; OFDM; PAM; modulation; optical transmission; spectral efficiency;
Conference_Titel :
Information Networking (ICOIN), 2014 International Conference on
Conference_Location :
Phuket
DOI :
10.1109/ICOIN.2014.6799736
