Effect of Error Correcting Code in Photon Communications with Energy Loss

Kouichi YAMAZAKI  Osamu HIROTA  Masao NAKAGAWA  Tomohiko UYEMATSU  Masanori OHYA  

IEICE TRANSACTIONS (1976-1990)   Vol.E70   No.8   pp.689-692
Publication Date: 1987/08/25
Online ISSN: 
Print ISSN: 0000-0000
Type of Manuscript: LETTER
Category: Foundations of Signal Theory and Communication Theory

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It is shown that error correcting code improves an essential perfomance limitation of photon communications with energy loss. The coded photon signals allow us the loss about 13 dB to keep the advantage of photon number state signals while uncoded one is about 7 dB. Furthermore the necessity of weight distribution control of code words is discussed.