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Hardware-Efficient Blind Frequency Offset Estimation for Spectral-Efficient Digital Subcarrier Multiplexing Systems

For the digital subcarriermultiplexing (DSM) transmission, it is compulsory to realize the frequency offset estimation (FOE) and compensation (FOC) before the subcarrier de-multiplexing and the chromatic dispersion (CD) compensation (CDC). Here, we demonstrate a blind FOE method for the spectral-efficient DSM signals with a sharper root raised cosine (RRC) spectral shaping, with the capabilities of the transparent modulation format operation, a wide FOE range, and a high FOE accuracy. By reusing the spectral information for the CDC, the proposed FOE method is hardware efficient. Moreover, the proposed FOE method is numerically identified robust to transmission impairments, including the amplified spontaneous emission (ASE) noise, the optical filtering effect, and the accumulated CD, with an estimation error of less than 35 MHz under a FFT size of 2048. The correct function of the proposed FOE method is finally experimentally verified for 25 Gbaud 16QAM DSM signals under scenarios of both back-to-back (B2B) and standard single-mode fiber (SSMF) transmissions.

Ketersediaan

Informasi Detail

Judul Seri

JOURNAL OF LIGHTWAVE TECHNOLOGY; Vol.40 No.13 July 1 2022

No. Panggil

-

Penerbit

: .,

Deskripsi Fisik

p. 4246-4256

Bahasa

English

ISBN/ISSN

-

Klasifikasi

NONE

Tipe Isi

-

Tipe Media

-

Tipe Pembawa

-

Edisi

-

Subjek

SPECTRAL EFFICIENCY
DIGITAL SUBCARRIER MULTIPLEXING
FREQUENCY OFFSET ESTIMATION
AND FIBER OPTICAL TRANSMISSION

Info Detail Spesifik

DOI: 10.1109/JLT.2022.3163017

Pernyataan Tanggungjawab

Hong Lv, Meng Xiang, Ruitao Wu, Yunhe Ma, Jianping Li, Ou Xu, Di Peng, Yuwen Qin, Songnian Fu

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