Title :
On the achievable average power reduction of MSM optical signals
Author :
Sharif, Masoud ; Hassibi, Babak
Author_Institution :
Dept. of Electr. Eng., California Inst. of Technol., Pasadena, CA, USA
Abstract :
In this letter, we consider the achievable average power reduction of multiple subcarrier modulated optical signals by using optimized reserved carriers. Based on Nehari´s result we present a lower bound for the maximum average power of the signal after adding the reserved carriers. Simulations show that the mean value of the average required power behaves very close to √(2nloglogn) for binary phase-shift keying (BPSK) constellations where n is the number of subcarriers. We further remark on evaluating optimum values for reserved carriers using convex optimization and Nehari´s result.
Keywords :
convex programming; intensity modulation; optical communication; optical modulation; phase shift keying; Nehari result; average power reduction; binary phase-shift keying constellations; convex optimisation; intensity modulation; multiple subcarrier modulated optical signals; optical communication; High speed optical techniques; Intensity modulation; OFDM; Optical devices; Optical fiber communication; Optical modulation; Optical pulse shaping; Optical sensors; Pulse shaping methods; Signal processing;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2004.823418
