Full duplex 60-GHz RoF link employing tandem single sideband modulation scheme and high spectral efficiency modulation format

Abstract

This study proposes a full duplex 60-GHz band radio-over-fiber (RoF) link using a modified tandem single sideband (TSSB) modulation scheme with frequency doubling. Based on the modified TSSB modulation scheme, no dispersion induced fading is observed; high spectral efficiency vector signal can be utilized; and wavelength reuse can also be achieved. Both single carrier 8-QAM and QPSK-OFDM signals for down-link transmissions are experimentally demonstrated. After transmission of 50-km SSMF, no significant receiver power penalties are observed. Wavelength reuses with 1.25-Gb/s OOK using a reflective semiconductor optical amplifier (RSOA) for up-link transmission are also demonstrated. After transmission of 50-km SSMF, no significant receiver power penalties are also observed.

V‐band vector mm‐wave signal generation enabled by a dual‐parallel Mach‐Zehnder modulator without precoding and optical filter

“…[5][6][7][8][9][10] Recently, some research groups proposed photonic schemes to generate vector mm-wave signal. [11][12][13][14][15][16][17][18][19] Remote heterodyne technology can bring the benefits of cost-effectiveness and easy implementation, which is ever considered as a very good candidate technology. However, because of unlocked frequency, the frequency of vector mm-wave generated by this scheme is not stable.…”

Performance improvement of 60‐GHz wireless optical systems with reverse‐parallel hybrid modulation scheme

“…Also, the use of frequency reuse concept is advised, but this upsurges the infrastructure cost as more and more base stations have to be positioned. [9][10][11][12][13][14] One of the major schemes is tandem SSB scheme (TSSB) which combines OSSB and optical frequency doubling technique. It is a technique of modulating the RF signal over an optical carrier and sending it over a fibre between base stations.…”

“…8 Various optical single sideband (OSSB) modulation schemes are also anticipated to overcome dispersion effects. [9][10][11][12][13][14] One of the major schemes is tandem SSB scheme (TSSB) which combines OSSB and optical frequency doubling technique. In these schemes, an electrical mixer is imperative and has imperfect characteristics like bandwidth restraints, nonlinear response, and conversion losses which give rise to problem of transparency of RoF platform to support multiple amenities at different bands.…”

Reversely Modulated Optical Single Sideband Scheme and Its Application in a 60-GHz Full Duplex ROF System

“…Radio-over-fiber (ROF) technology, which can effectively integrate optical and wireless systems, is a promising solution to provide the large capacity and high flexibility [1][2][3][4][5][6][7][8][9][10][11][12]. The fiber dispersion induced walk-off effect of ROF channels increases inter symbol interference (ISI) of the binary data [8] and introduces frequency selective fading for OFDM data [5].…”