Optimized hybrid QPSK/8QAM for CO-OFDM transmissions

S.T. Le; M.E. McCarthy; S.K. Turitsyn

doi:10.1109/CSNDSP.2014.6923929

Optimized hybrid QPSK/8QAM for CO-OFDM transmissions

S.T. Le^*, M.E. McCarthy, S.K. Turitsyn

^*Corresponding author for this work

Aston Institute of Photonic Technologies (AiPT)

Research output: Chapter in Book/Published conference output › Conference publication

Abstract

In optical communications, a high spectral efficiency can be realized by applying high order modulation formats such as 8QAM, 16QAM and 64QAM. However, depending on the system's requirements (bandwidth, performance and transmission distance), the maximum spectral efficiency may not be achievable with the regular 2^m-array QAM formats. In this case, a hybrid modulation format, such as QPSK/8QAM, can provide an effective solution. In this work, we deliver the optimum design for single channel coherent optical orthogonal frequency division multiplexing systems with hybrid QPSK/8QAM modulation format. We also discuss a simple but effective strategy for applying hybrid QAMs for long-haul optical communications without considering sophisticated bit and power loading algorithms developed for wireless communications.

Original language	English
Title of host publication	2014 9th international symposium on Communication Systems, Networks and Digital Signl Processing, CSNDSP 2014
Publisher	IEEE
Pages	763-766
Number of pages	4
ISBN (Print)	978-1-4799-2581-0
DOIs	https://doi.org/10.1109/CSNDSP.2014.6923929
Publication status	Published - 31 Dec 2014
Event	9th IEEE/IET international symposium on Communication Systems, Networks and Digital Signl Processing - Manchester Metropolitan University, Manchester, United Kingdom Duration: 23 Jul 2014 → 25 Jul 2014

Symposium

Symposium	9th IEEE/IET international symposium on Communication Systems, Networks and Digital Signl Processing
Abbreviated title	CSNDSP 2014
Country/Territory	United Kingdom
City	Manchester
Period	23/07/14 → 25/07/14

Bibliographical note

Funding: EPRSC programme Grant UNLOC (EP/J017582/1)

Keywords

coherent
optical communications
orthogonal frequency division multiplexing (OFDM)

Access to Document

10.1109/CSNDSP.2014.6923929

Cite this

@inproceedings{9848fffc03394146bce61b7a31eb1436,

title = "Optimized hybrid QPSK/8QAM for CO-OFDM transmissions",

abstract = "In optical communications, a high spectral efficiency can be realized by applying high order modulation formats such as 8QAM, 16QAM and 64QAM. However, depending on the system's requirements (bandwidth, performance and transmission distance), the maximum spectral efficiency may not be achievable with the regular 2m-array QAM formats. In this case, a hybrid modulation format, such as QPSK/8QAM, can provide an effective solution. In this work, we deliver the optimum design for single channel coherent optical orthogonal frequency division multiplexing systems with hybrid QPSK/8QAM modulation format. We also discuss a simple but effective strategy for applying hybrid QAMs for long-haul optical communications without considering sophisticated bit and power loading algorithms developed for wireless communications.",

keywords = "coherent, optical communications, orthogonal frequency division multiplexing (OFDM)",

author = "S.T. Le and M.E. McCarthy and S.K. Turitsyn",

note = "Funding: EPRSC programme Grant UNLOC (EP/J017582/1); 9th IEEE/IET international symposium on Communication Systems, Networks and Digital Signl Processing, CSNDSP 2014 ; Conference date: 23-07-2014 Through 25-07-2014",

year = "2014",

month = dec,

day = "31",

doi = "10.1109/CSNDSP.2014.6923929",

language = "English",

isbn = "978-1-4799-2581-0",

pages = "763--766",

booktitle = "2014 9th international symposium on Communication Systems, Networks and Digital Signl Processing, CSNDSP 2014",

publisher = "IEEE",

address = "United States",

}

Le, ST, McCarthy, ME & Turitsyn, SK 2014, Optimized hybrid QPSK/8QAM for CO-OFDM transmissions. in 2014 9th international symposium on Communication Systems, Networks and Digital Signl Processing, CSNDSP 2014. IEEE, pp. 763-766, 9th IEEE/IET international symposium on Communication Systems, Networks and Digital Signl Processing, Manchester, United Kingdom, 23/07/14. https://doi.org/10.1109/CSNDSP.2014.6923929

TY - GEN

T1 - Optimized hybrid QPSK/8QAM for CO-OFDM transmissions

AU - Le, S.T.

AU - McCarthy, M.E.

AU - Turitsyn, S.K.

N1 - Funding: EPRSC programme Grant UNLOC (EP/J017582/1)

PY - 2014/12/31

Y1 - 2014/12/31

N2 - In optical communications, a high spectral efficiency can be realized by applying high order modulation formats such as 8QAM, 16QAM and 64QAM. However, depending on the system's requirements (bandwidth, performance and transmission distance), the maximum spectral efficiency may not be achievable with the regular 2m-array QAM formats. In this case, a hybrid modulation format, such as QPSK/8QAM, can provide an effective solution. In this work, we deliver the optimum design for single channel coherent optical orthogonal frequency division multiplexing systems with hybrid QPSK/8QAM modulation format. We also discuss a simple but effective strategy for applying hybrid QAMs for long-haul optical communications without considering sophisticated bit and power loading algorithms developed for wireless communications.

AB - In optical communications, a high spectral efficiency can be realized by applying high order modulation formats such as 8QAM, 16QAM and 64QAM. However, depending on the system's requirements (bandwidth, performance and transmission distance), the maximum spectral efficiency may not be achievable with the regular 2m-array QAM formats. In this case, a hybrid modulation format, such as QPSK/8QAM, can provide an effective solution. In this work, we deliver the optimum design for single channel coherent optical orthogonal frequency division multiplexing systems with hybrid QPSK/8QAM modulation format. We also discuss a simple but effective strategy for applying hybrid QAMs for long-haul optical communications without considering sophisticated bit and power loading algorithms developed for wireless communications.

KW - coherent

KW - optical communications

KW - orthogonal frequency division multiplexing (OFDM)

UR - http://www.scopus.com/inward/record.url?scp=84910622635&partnerID=8YFLogxK

UR - http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6923929

U2 - 10.1109/CSNDSP.2014.6923929

DO - 10.1109/CSNDSP.2014.6923929

M3 - Conference publication

AN - SCOPUS:84910622635

SN - 978-1-4799-2581-0

SP - 763

EP - 766

BT - 2014 9th international symposium on Communication Systems, Networks and Digital Signl Processing, CSNDSP 2014

PB - IEEE

T2 - 9th IEEE/IET international symposium on Communication Systems, Networks and Digital Signl Processing

Y2 - 23 July 2014 through 25 July 2014

ER -

Optimized hybrid QPSK/8QAM for CO-OFDM transmissions

Abstract

Symposium

Bibliographical note

Keywords

Access to Document

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