Coexistent intra-symbol SMSE waveform design: Variation in waveform update latency and update rate

The impact of variation in waveform update latency and update rate is investigated for Spectrally Modulated, Spectrally Encoded (SMSE) waveform designs in a coexistent environment containing multiple 802.11 Primary User (PU) systems. As previously demonstrated for no latency with a fixed update rate, the SMSE waveform design process can exploit statistical knowledge of PU spectral and temporal behavior to maximize SMSE system throughput (bits/second) while adhering to SMSE and PU bit error rate constraints with mutual coexistent interference limited to manageable levels. Building upon this previous work, a sensitivity analysis is conducted here through parametric variation in both waveform update latency and update rate. Relative to a spectrally-only adapted waveform, the spectrally-temporally adapted waveform provides significant performance improvement. Maximum improvement is achieved using statistic-based prediction of channel temporal conditions and appropriate updating of the SMSE waveform design.