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コヒーレント光通信技術の進展 - JSAP
OFDM(orthogonal frequency division multiplexing)웎웗， 128QAM(quadrature amplitude modulation)웏웗，5bit/s/ Hz원웗を超える周波数利用効率向上など，無線通信を彷彿 とさせる研究成果が発表されている． 本論文では1980～1990年代に精力的に検討されたコヒ
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