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ULTRA-HIGH SPEED OPTICAL TRANSPORT EMPLOYING LDPC-CODED MODULATION WITH NON-UNIFORM SIGNALING
ULTRA-HIGH SPEED OPTICAL TRANSPORT EMPLOYING LDPC-CODED MODULATION WITH NON-UNIFORM SIGNALING
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机译:采用非均匀信号传输的采用LDPC编码调制的超高速光学传输
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摘要
A low-density parity-check (LDPC) coded bit-interleaved coded modulation with iterative decoding (BICM-ID) scheme with nonuniform signaling which is effected by mapping simple variable-length prefix codes onto the constellation. By employing Huffman procedure(s), prefix codes can be designed to approach optimal performance. Experimental evaluations of the schemes demonstrate that the nonuniform scheme performs better than 8-QAM by at least 8.8 dB.
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