Unique Word DMT Schemes using Real-Valued Constellations for IM/DD Optical Systems

Sher Ali Cheema; Mike Wolf; Mario Huemer; Martin Haardt

doi:10.1109/LPT.2018.2808761

Unique Word DMT Schemes using Real-Valued Constellations for IM/DD Optical Systems

Sher Ali Cheema, Mike Wolf, Mario Huemer, Martin Haardt

Institute of Signal Processing

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

Abstract

Discrete multitone transmission (DMT) schemes employing real-valued constellations such as PAM (PAM-DMT) are popular multi-carrier transmission schemes for optical systems using intensity modulation and direct detection. PAM-DMT employs a data dependent cyclic prefix (CP) to maintain cyclicity. In this letter, we propose a novel DMT scheme using real-valued modulation formats where the usual CPs are replaced by a unique word (UW) that is a known deterministic sequence. This is achieved by designing a code generator matrix in the frequency domain that introduces correlation among the data symbols. The proposed PAM UW-DMT scheme shows a superior bit error ratio performance as compared with PAM CP-DMT. Moreover, the UW can be used for other purposes, such as synchronization and channel estimation.

Original language	English
Pages (from-to)	935-938
Number of pages	4
Journal	IEEE Photonics Technology Letters
Volume	30
Issue number	10
DOIs	https://doi.org/10.1109/LPT.2018.2808761
Publication status	Published - May 2018

Fields of science

202040 Transmission technology
202 Electrical Engineering, Electronics, Information Engineering
202015 Electronics
202022 Information technology
202030 Communication engineering
202037 Signal processing

JKU Focus areas

Computation in Informatics and Mathematics
Mechatronics and Information Processing

Access to Document

10.1109/LPT.2018.2808761

Cite this

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title = "Unique Word DMT Schemes using Real-Valued Constellations for IM/DD Optical Systems",

abstract = "Discrete multitone transmission (DMT) schemes employing real-valued constellations such as PAM (PAM-DMT) are popular multi-carrier transmission schemes for optical systems using intensity modulation and direct detection. PAM-DMT employs a data dependent cyclic prefix (CP) to maintain cyclicity. In this letter, we propose a novel DMT scheme using real-valued modulation formats where the usual CPs are replaced by a unique word (UW) that is a known deterministic sequence. This is achieved by designing a code generator matrix in the frequency domain that introduces correlation among the data symbols. The proposed PAM UW-DMT scheme shows a superior bit error ratio performance as compared with PAM CP-DMT. Moreover, the UW can be used for other purposes, such as synchronization and channel estimation.",

author = "Cheema, {Sher Ali} and Mike Wolf and Mario Huemer and Martin Haardt",

year = "2018",

month = may,

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journal = "IEEE Photonics Technology Letters",

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T1 - Unique Word DMT Schemes using Real-Valued Constellations for IM/DD Optical Systems

AU - Cheema, Sher Ali

AU - Wolf, Mike

AU - Huemer, Mario

AU - Haardt, Martin

PY - 2018/5

Y1 - 2018/5

N2 - Discrete multitone transmission (DMT) schemes employing real-valued constellations such as PAM (PAM-DMT) are popular multi-carrier transmission schemes for optical systems using intensity modulation and direct detection. PAM-DMT employs a data dependent cyclic prefix (CP) to maintain cyclicity. In this letter, we propose a novel DMT scheme using real-valued modulation formats where the usual CPs are replaced by a unique word (UW) that is a known deterministic sequence. This is achieved by designing a code generator matrix in the frequency domain that introduces correlation among the data symbols. The proposed PAM UW-DMT scheme shows a superior bit error ratio performance as compared with PAM CP-DMT. Moreover, the UW can be used for other purposes, such as synchronization and channel estimation.

AB - Discrete multitone transmission (DMT) schemes employing real-valued constellations such as PAM (PAM-DMT) are popular multi-carrier transmission schemes for optical systems using intensity modulation and direct detection. PAM-DMT employs a data dependent cyclic prefix (CP) to maintain cyclicity. In this letter, we propose a novel DMT scheme using real-valued modulation formats where the usual CPs are replaced by a unique word (UW) that is a known deterministic sequence. This is achieved by designing a code generator matrix in the frequency domain that introduces correlation among the data symbols. The proposed PAM UW-DMT scheme shows a superior bit error ratio performance as compared with PAM CP-DMT. Moreover, the UW can be used for other purposes, such as synchronization and channel estimation.

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DO - 10.1109/LPT.2018.2808761

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JF - IEEE Photonics Technology Letters

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ER -

Unique Word DMT Schemes using Real-Valued Constellations for IM/DD Optical Systems

Abstract

Fields of science

JKU Focus areas

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Unique-Word-Based OFDM

Cite this

Unique Word DMT Schemes using Real-Valued Constellations for IM/DD Optical Systems

Abstract

Fields of science

JKU Focus areas

Access to Document

Other files and links

Projects

Unique-Word-Based OFDM

Cite this