A comparison of coherent digital PPM with PCM

Robert A. Cryan; Rodney T. Unwin; Alistair J. Massarella; Martin J.N. Sibley; Ian Garrett

doi:10.1002/ett.4460030405

A comparison of coherent digital PPM with PCM

Robert A. Cryan, Rodney T. Unwin, Alistair J. Massarella, Martin J.N. Sibley, Ian Garrett

Research output: Contribution to journal › Article › peer-review

22 Citations (Scopus)

Abstract

Digital pulse position modulation (PPM) is a preferred modulation format for the ideal photon counting channel and optical intersateilite links. Here we examine its potential for the coherent optical fibre communications channel. We present a thorough performance and optimisation analysis. Comparisons, at a wavelength of 1.5 μm, are made with shot‐noise limited coherent PCM (homodyne and heterodyne ASK, FSK and PSK) over a range of fibre band‐widths and varying PPM word size. We conclude that for moderate to high fibre bandwidths homodyne digital PPM should achieve an improvement in sensitivity of typically 5 dB over homo‐dyne PSK PCM.

Original language	English
Pages (from-to)	331-340
Number of pages	10
Journal	European Transactions on Telecommunications
Volume	3
Issue number	4
DOIs	https://doi.org/10.1002/ett.4460030405
Publication status	Published - 1 Jul 1992

Access to Document

10.1002/ett.4460030405Licence: Unspecified

Cite this

@article{f851be0a797d4de1ae362a238e339377,

title = "A comparison of coherent digital PPM with PCM",

abstract = "Digital pulse position modulation (PPM) is a preferred modulation format for the ideal photon counting channel and optical intersateilite links. Here we examine its potential for the coherent optical fibre communications channel. We present a thorough performance and optimisation analysis. Comparisons, at a wavelength of 1.5 μm, are made with shot‐noise limited coherent PCM (homodyne and heterodyne ASK, FSK and PSK) over a range of fibre band‐widths and varying PPM word size. We conclude that for moderate to high fibre bandwidths homodyne digital PPM should achieve an improvement in sensitivity of typically 5 dB over homo‐dyne PSK PCM.",

author = "Cryan, {Robert A.} and Unwin, {Rodney T.} and Massarella, {Alistair J.} and Sibley, {Martin J.N.} and Ian Garrett",

year = "1992",

month = jul,

day = "1",

doi = "10.1002/ett.4460030405",

language = "English",

volume = "3",

pages = "331--340",

journal = "Alta Frequenza",

issn = "1124-318X",

publisher = "Associazione Elettrotecnica ed Elettronica Italiana",

number = "4",

}

TY - JOUR

T1 - A comparison of coherent digital PPM with PCM

AU - Cryan, Robert A.

AU - Unwin, Rodney T.

AU - Massarella, Alistair J.

AU - Sibley, Martin J.N.

AU - Garrett, Ian

PY - 1992/7/1

Y1 - 1992/7/1

N2 - Digital pulse position modulation (PPM) is a preferred modulation format for the ideal photon counting channel and optical intersateilite links. Here we examine its potential for the coherent optical fibre communications channel. We present a thorough performance and optimisation analysis. Comparisons, at a wavelength of 1.5 μm, are made with shot‐noise limited coherent PCM (homodyne and heterodyne ASK, FSK and PSK) over a range of fibre band‐widths and varying PPM word size. We conclude that for moderate to high fibre bandwidths homodyne digital PPM should achieve an improvement in sensitivity of typically 5 dB over homo‐dyne PSK PCM.

AB - Digital pulse position modulation (PPM) is a preferred modulation format for the ideal photon counting channel and optical intersateilite links. Here we examine its potential for the coherent optical fibre communications channel. We present a thorough performance and optimisation analysis. Comparisons, at a wavelength of 1.5 μm, are made with shot‐noise limited coherent PCM (homodyne and heterodyne ASK, FSK and PSK) over a range of fibre band‐widths and varying PPM word size. We conclude that for moderate to high fibre bandwidths homodyne digital PPM should achieve an improvement in sensitivity of typically 5 dB over homo‐dyne PSK PCM.

UR - http://www.scopus.com/inward/record.url?scp=0026884692&partnerID=8YFLogxK

U2 - 10.1002/ett.4460030405

DO - 10.1002/ett.4460030405

M3 - Article

AN - SCOPUS:0026884692

VL - 3

SP - 331

EP - 340

JO - Alta Frequenza

JF - Alta Frequenza

SN - 1124-318X

IS - 4

ER -

A comparison of coherent digital PPM with PCM

Abstract

Access to Document

Other files and links

Fingerprint

Cite this