Spectral efficiency analysis of spectral amplitude coding-based optical packet-switching networks using p value approach

In this paper, the spectral efficiency (SE) of an optical labeling operation with spectral amplitude coding (SAC) in optical packet-switching networks is analyzed. The p value approach for hypothesis testing is adapted in the label-recognition process to increase the SE. In contrast to the existing SAC labeling archetype, where the label signal presents in the entire packet length, the label duration has been reduced to obtain a higher efficiency for the bandwidth and power utilization. Moreover, the label number carried by a single packet is increased by mitigating the decoding noises through the multiple sampling performed at the decoder. The analytical model of SE is derived from considering the noise sources of the SAC systems with the investigated sequence of the enhanced multi-diagonal (EMD) codes. SEs of different code lengths, label numbers and label signal durations are evaluated and compared. The SE advantage is achieved by conducting a p value approach to obtain the appropriate sampling number for label recognition given an acceptable label error rate (LER) and code cardinality.