Experimental Analysis of Transmission and Soft Decoding of Optimized 4D Constellations
Asia Communications and Photonics Conference 2013 (2013), paper AF4C.1（2013）
摘要
Different 4D constellation alternatives to PM-8QAM were experimentally investigated exhibiting up to 1-dB improvement at 5E-3 SER. Iterative decoding of LDPC coded 4D constellation POLQAM (6PolSK-QPSK) provided up 4.8-dB gain (3.8E-3, 30-percent overhead).
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