Twin-SSB-OFDM Transmission over Heterodyne W-Band Fiber-Wireless System with Real-Time Implementable Blind Carrier Recovery

Rui Deng, Jianjun Yu, Jing He*, Ming Chen, Yiran Wei, Li Zhao, Qi Zhang, Xiangjun Xin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)

Abstract

We experimentally demonstrate a heterodyne W-band fiber-wireless system using a twin single-side-band orthogonal frequency division multiplexing (Twin-SSB-OFDM) transmission scheme with low-cost electrical filters. The transmission scheme is proposed to halve the required sampling rate of the baseband receiver. Moreover, since the W-band signal generation is based on optical heterodyne with nonideal laser sources, there is a time-varying carrier frequency offset (CFO) in the system. To mitigate the CFO effect and simultaneously realize down-conversion, a blind carrier recovery method is proposed and validated in the system. The experimental results show that after 22-km SSMF transmission and 1-m wireless transmission, the system can achieve a 40.07 Gb/s data rate with a bit-error-ratio (BER) below 3.8 × 10-3 when using a two-channel 12-GSa/s arbitrary waveform generator (AWG) as transmitter and two emulated 12-GSa/s baseband receivers. In addition, by setting the AWG at 5-GSa/s and using a 5-GSa/s real-time field programmable gate array (FPGA)-based receiver, an additional experiment is carried out by implementing the proposed method in the real-time receiver. Although the frequency swing of the intermediate frequency (IF) carrier of the received signal is up to ∼300 MHz, the system can also achieve a relatively stable transmission performance. The additional experiment further verifies the effectiveness and practical feasibility of the proposed carrier recovery method and the Twin-SSB-OFDM transmission scheme.

Original languageEnglish
Article number8493266
Pages (from-to)5562-5572
Number of pages11
JournalJournal of Lightwave Technology
Volume36
Issue number23
DOIs
Publication statusPublished - 1 Dec 2018
Externally publishedYes

Keywords

  • CFO
  • OFDM
  • W-band
  • fiber-wireless system

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