Back to Search Start Over

Hybrid OFDM receiver assisted by a variable frequency comb

Authors :
Stojan Radic
Huan Hu
Source :
Optics Express. 28:5658
Publication Year :
2020
Publisher :
Optica Publishing Group, 2020.

Abstract

A physically assisted orthogonal frequency division multiplexing (OFDM) receiver is described and characterized. In contrast to recent reports that utilize two physically distinct frequency combs with Verniered frequency pitch, the new receiver topology relies on a single frequency-toggled frequency comb. Dual-comb photonic front end was replaced by a single comb split into two switched paths to achieve spectral decomposition. To demonstrate new receiver operation, hybrid RF-photonic architecture for discrete Fourier transform (DFT) was constructed and used to decompose a wideband RF signal. The receiver demodulated a 4-QAM OFDM channel using 50 carriers from a single frequency comb. OFDM channel, spanning 3–7.9GHz RF band, was encoded using 100MHz-separated subcarriers. OFDM receiver performance was quantified by measuring its error vector magnitude (EVM).

Details

ISSN :
10944087
Volume :
28
Database :
OpenAIRE
Journal :
Optics Express
Accession number :
edsair.doi.dedup.....6c7bc43538611cae5602e82db4b18a0e
Full Text :
https://doi.org/10.1364/oe.386260