We address photon-number-assisted, polarization-based, binary communication systems equipped with photon counting receivers. In these channels, information is encoded in the value of polarization phase-shift but the carrier has an additional degree of freedom, i.e., its photon distribution, which may be exploited to implement binary-input multiple-output (BIMO) channels also in the presence of a phase diffusion noise affecting the polarization. Here, we analyze the performances of these channels, which approach capacity by means of iteratively decoded error correcting codes. In this paper, we use soft-metric-based low-density parity-check codes for this purpose. In order to take full advantage of all the information available at the output of a photon counting receiver, soft information is generated in the form of log-likelihood ratios, leading to improved frame error rate and bit error rate compared to binary symmetric channels. We evaluate the classical capacity of the considered BIMO channel and show the potential gains that may be provided by photon counting detectors in realistic implementations.
Soft-metric-based channel decoding for photon counting receivers / M. Mondin, F. Daneshgaran, I. Bari, M.T. Delgado, S. Olivares, M.G.A. Paris. - In: IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS. - ISSN 1077-260X. - 21:3(2015 May), pp. 6400407.1-6400407.7. [10.1109/JSTQE.2014.2372056]
Soft-metric-based channel decoding for photon counting receivers
S. OlivaresPenultimo
;M.G.A. Paris
2015
Abstract
We address photon-number-assisted, polarization-based, binary communication systems equipped with photon counting receivers. In these channels, information is encoded in the value of polarization phase-shift but the carrier has an additional degree of freedom, i.e., its photon distribution, which may be exploited to implement binary-input multiple-output (BIMO) channels also in the presence of a phase diffusion noise affecting the polarization. Here, we analyze the performances of these channels, which approach capacity by means of iteratively decoded error correcting codes. In this paper, we use soft-metric-based low-density parity-check codes for this purpose. In order to take full advantage of all the information available at the output of a photon counting receiver, soft information is generated in the form of log-likelihood ratios, leading to improved frame error rate and bit error rate compared to binary symmetric channels. We evaluate the classical capacity of the considered BIMO channel and show the potential gains that may be provided by photon counting detectors in realistic implementations.File | Dimensione | Formato | |
---|---|---|---|
06963271.pdf
accesso riservato
Tipologia:
Publisher's version/PDF
Dimensione
7.45 MB
Formato
Adobe PDF
|
7.45 MB | Adobe PDF | Visualizza/Apri Richiedi una copia |
Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.