BER performance improvement in FFH-OCDMA networks with BPSK modulation format

In this paper, the performance of optical fast frequency hopping code-division multiple-access (FFH-OCDMA) network based on binary phase shift keying (BPSK) modulation format under both ideal and non-ideal encoding scheme scenarios is addressed for the first time. The results show that the BPSK modulation format increases significantly the signal-to-interference ratio (SIR) and, consequently, the overall network performance. Even though the signal waveforms under non-ideal scenario suffer higher degradation, the BPSK modulation format is still robust to maintain transmissions with error-free even when the network capacity in terms of simultaneous users is under full operation. In addition, it is shown that on-off keying (OOK) - based networks are not good candidates for future FFH-OCDMA implementations in this MAI limited scenario. On the other hand, our results pave the way for BPSK-based networks, which are seen as potential candidates for next generation passive optical networks (NG-PONs).