An effect of detuning frequency in DSP-assisted offset-frequency-spaced two-tone optical coherent detection for radio-over-fiber signal

2014 ◽  
Author(s):  
Toshiaki Kuri ◽  
Takahide Sakamoto ◽  
Tetsuya Kawanishi
Keyword(s):  
Radio Over Fiber ◽  
Coherent Detection ◽  
Offset Frequency

Output Signal Frequency Optional Full-duplex Radio over Fiber System Based on Coherent Detection

2020 ◽  
Vol 49 (5) ◽  
pp. 506004
Author(s):  
雷珂珂 LEI Ke-ke ◽  
罗吴金 LUO Wu-jin ◽  
谢胜超 XIE Sheng-chao ◽  
张诗友 ZHANG Shi-you ◽  
韩一石 HAN Yi-shi
Keyword(s):  
Output Signal ◽  
Radio Over Fiber ◽  
Coherent Detection ◽  
Full Duplex ◽  
Signal Frequency ◽  
Fiber System ◽  
Radio Over Fiber System

Radio over fiber link with adaptive order n-QAM optical phase modulated OFDM and digital coherent detection

2011 ◽  
Vol 53 (10) ◽  
pp. 2245-2247 ◽  
Author(s):  
Valeria Arlunno ◽  
Robert Borkowski ◽  
Neil Guerrero Gonzalez ◽  
Antonio Caballero ◽  
Kamau Price ◽  
...  
Keyword(s):  
Radio Over Fiber ◽  
Coherent Detection ◽  
Optical Phase ◽  
Fiber Link

Performance Analysis of Digital Modulation for Coherent Detection of OFDM Scheme on Radio over Fiber System

2016 ◽  
Vol 6 (3) ◽  
pp. 1086 ◽  
Author(s):  
Fauza Khair ◽  
Fakhriy Hario P ◽  
I Wayan Mustika ◽  
Budi Setiyanto
Keyword(s):  
Error Rate ◽  
Orthogonal Frequency Division Multiplexing ◽  
Fiber Length ◽  
Direct Detection ◽  
Symbol Error Rate ◽  
Radio Over Fiber ◽  
Coherent Detection ◽  
Fiber System ◽  
Digital Modulation ◽  
Modulation Formats

Radio over fiber (RoF) system with the coherent detection offers high linearity for the transparent transport of high-frequency microwave signals, and better receiver sensitivity compared with intensity-modulated direct detection systems. The purpose of this paper is to analyze the performance of digital modulation for coherent detection of orthogonal frequency division multiplexing (OFDM) scheme on RoF system at 10 Gbps up to 100 km fiber length. The results show that coherent detection of OFDM-RoF system with 16 quadrature amplitude modulation (16-QAM) has the value of  bit error rate (BER) and the symbol error rate (SER) is very low and its constellation is better compared with other modulation formats (4-QAM, quadrature phase shift keying (QPSK), 8-PSK and 16-PSK), which BER 16-QAM is 0.053 and SER is 15.7%. The results also show that BER value of 4-QAM and QPSK relatively similar to fiber length variations. In general, an increasing value of the BER and SER for each modulation format are almost equal to the fiber length of 60-70 km (Region I and II). However, there is a significant increase in the value of BER in fiber length of 80-100 km (Region III. A and III. B) for the modulation of 4-QAM, QPSK, 8-PSK, and 16-PSK.

Laser-Phase-Fluctuation-Insensitive Optical Coherent Detection Scheme for Radio-over-Fiber System

2014 ◽  
Vol 32 (20) ◽  
pp. 3803-3809 ◽  
Author(s):  
Toshiaki Kuri ◽  
Takahide Sakamoto ◽  
Guo-Wei Lu ◽  
Tetsuya Kawanishi
Keyword(s):  
Phase Fluctuation ◽  
Radio Over Fiber ◽  
Coherent Detection ◽  
Fiber System ◽  
Detection Scheme ◽  
Radio Over Fiber System

scholarly journals High Capacity 64-Quadrature Amplitude Modulation Based Optical Coherent Transceiver for 60 GHz Radio Over Fiber System

2021 ◽  
Author(s):  
Devendra Chack ◽  
SUNIL NARAYAN THOOL
Keyword(s):  
Amplitude Modulation ◽  
High Capacity ◽  
Quadrature Amplitude Modulation ◽  
Data Rate ◽  
Radio Over Fiber ◽  
Coherent Detection ◽  
Optical Heterodyne ◽  
60 Ghz ◽  
Error Vector Magnitude ◽  
Bandwidth Utilization

Abstract Today’s world demands for maximum bandwidth utilization in the area of optical fiber network to achieve serious progress due to data consumption has been grown by > 25% as compared to last year. 5G system is one of the promising technology cater for high bandwidth utilization between multiple transceivers and have the advantages to operate in the milli-meter wave (mm-wave) of 60 GHz. There is much interest of photonic technique such as optical heterodyne coherent detection to produce mm-wave frequencies. We propose a 60 GHz radio over fiber (RoF) link using 168 Gb/s high capacity input data rate based 64-Quadrature amplitude modulation (64-QAM), coherent detection using optical heterodyning and advanced digital signal processing (ADSP) based system. An optimized version of optical heterodyne technique is used to derive 60 GHz radio frequency (RF) signal for connecting radio nodes over wireless link. In order to compensate the irregularities effect of standard signal mode fiber (SSMF), a novel ADSP technique is used which allows good improvement in the spectral signal efficiency and achieved longer distance communication. The ADSP technique plays a key role to achieve high capacity data rate requirements for forthcoming 5G technologies. The proposed RoF system shows that an error free transmission is accomplished over 170 km SSMF and achieved BER is 2.7×10-3 against 7.015 % error vector magnitude (EVM) with 30 dB Signal to Noise ratio (SNR).

scholarly journals Performance Analysis of Digital Modulation for Coherent Detection of OFDM Scheme on Radio over Fiber System

2016 ◽  
Vol 6 (3) ◽  
pp. 1086
Author(s):  
Fauza Khair ◽  
Fakhriy Hario P ◽  
I Wayan Mustika ◽  
Budi Setiyanto
Keyword(s):  
Error Rate ◽  
Orthogonal Frequency Division Multiplexing ◽  
Fiber Length ◽  
Direct Detection ◽  
Symbol Error Rate ◽  
Radio Over Fiber ◽  
Coherent Detection ◽  
Fiber System ◽  
Digital Modulation ◽  
Modulation Formats

Radio over fiber (RoF) system with the coherent detection offers high linearity for the transparent transport of high-frequency microwave signals, and better receiver sensitivity compared with intensity-modulated direct detection systems. The purpose of this paper is to analyze the performance of digital modulation for coherent detection of orthogonal frequency division multiplexing (OFDM) scheme on RoF system at 10 Gbps up to 100 km fiber length. The results show that coherent detection of OFDM-RoF system with 16 quadrature amplitude modulation (16-QAM) has the value of  bit error rate (BER) and the symbol error rate (SER) is very low and its constellation is better compared with other modulation formats (4-QAM, quadrature phase shift keying (QPSK), 8-PSK and 16-PSK), which BER 16-QAM is 0.053 and SER is 15.7%. The results also show that BER value of 4-QAM and QPSK relatively similar to fiber length variations. In general, an increasing value of the BER and SER for each modulation format are almost equal to the fiber length of 60-70 km (Region I and II). However, there is a significant increase in the value of BER in fiber length of 80-100 km (Region III. A and III. B) for the modulation of 4-QAM, QPSK, 8-PSK, and 16-PSK.

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