Photonic frequency-quadrupling and balanced pre-coding technologies for W-band QPSK vector mm-wave signal generation based on a single DML

Wang, Yanyi; Yang, Chao; Chi, Nan; Yu, Jianjun

doi:10.1016/j.optcom.2016.01.058

Cited by 7 publications

(1 citation statement)

References 23 publications

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“…There are two main methods of photonic vector RF signal generation. One is the use of precoding-assisted techniques at the transmitter [15], [16]. However, for higher order modulation formats, the system performance will deteriorate.…”

Section: Introductionmentioning

confidence: 99%

Chromatic Dispersion Compensation in Phase-Stabilized Dissemination System of Broadband Signals Based on Phase Conjugation

Wang,

Liu,

Zhang

et al. 2023

IEEE Photonics J.

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We present a dispersion-independent phase stabilized distribution architecture for broadband signal based on photonic microwave phase conjugation. RoF signals are distributed from the central station to each base station via a fiber ring network. The elimination of dispersion-induced optical phase decorrelation is achieved because the backward transmission of the phaseconjugated signal, thus the EVM of the RoF signal is optimized. A proof-of-concept experiment is demonstrated. A distribution of QPSK modulated 23-GHz, 400M Baud RoF signals from the central station to a remote base station is obtained via a fiber optic loop. The demodulated constellation and error vector magnitude with and without dispersion compensation are measured at the remote base station. When we set the length of the fiber loop to 58km, the EVM is reduced by 8% after dispersion compensation, and the compensated EVM can reach the threshold value of 17.5% specified by 3GPP for 5G when the received optical power of PD is 4dBm.

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Section: Introductionmentioning

confidence: 99%