BICMC and TD Comparative Performance Study of 16-APSK Signal Variants for DVB-S2 Systems


A comparative performance study, in terms of Bit Interleaved Coded Modulation Capability (BICMC) and Total Degradation (TD), between Amplitude Section Shift Keying (APSK) signal variants for the 2nd generation Digital Video Broadcasting via Satellite (DVB-S2) system is presented. Motivated by the observation that the presence of more signal points within the outer ring of 16-APSK signals seems to improve the performance in a very non-linear (NL) channel, we have a tendency to investigate the performance of 2–14 and three–13 APSK signals with 2 novel bit-to-symbol mappings as alternatives to the 4–12 APSK, which is currently proposed because the modulation scheme for the DVB-S2 normal. Performance evaluation results are obtained for an air-interface based mostly on this normal, which includes a Non-Linear (NL) High Power Amplifier (HPA), predistortion, raised cosine Nyquist filters and Low-Density Parity-Check (LDPC) codes. Performance results have shown that the proposed 3–thirteen APSK signal not solely achieves the most effective BICMC performance with higher gains occurring at high signal-to-noise ratios, but additionally outperforms, in terms of TD performance, all the opposite thought-about sixteen-ary APSK signal variants.

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