Investigation of Polarization Effect in Coherent Optical Orthogonal Frequency Division Multiplexing System

Yaohong, 郝耀鸿 Hao; Rong, 王荣 Wang; Yuquan, 李玉权 Li; Weiwei, 黄卫卫 Huang

doi:10.3788/aos201333.0706021

Cited by 2 publications

(3 citation statements)

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“…Furthermore, developed countries have a high income for each person due to inhabited domestic complexes. In Figures 6 and 7 shows illustrations of various cases of FTTH and FTTHut networks are established depending on PON technology [54][55][56][57]. For the specialty of Africa, we chose vertical cavity surface-emitting lasers (VCSEL) because of the unique and tremendous advantages that are of great interest in the recent past which fit our purpose.…”

Section: Africamentioning

confidence: 99%

A Review of immigration obstacles to PON-FTTH and its evolution around the world

2021

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The require a bandwidth of every person will be increased from 16 Mbit/s to 50 up to 100M bit/s in the next 5 years in most of the growing counties. To solve this problem, FTTH may be the appropriate solution in a wide range. We experimentally investigate the deploy of PON-FTTH based on different kinds of passive optical network technology (E-PON, G-PON and VCSEL) and study the Obstacles of PON-FTTH Immigration after comparing it with older service (XDSL). Then analysis the reason on why these technologies chose by some country not others and why the technological need in Europe different with need in Africa and America. We discussed the solutions in telecommunications networks and or the economic aspect of projects all over the world, we found that GPON is more appropriable for accomplishment PON-FTTH than other networks. Thus GPON has been chosen for Europe, America and middle east. Choosing GPON techniques is decided by many factors include the infrastructure that was made before, the people demand for service and how much service they need because the need in Europe different with need in Africa and American and so on. Finally, we will suggest the appropriate solution in the energy savings, cost effective, higher security, and side of service transparency over other access networks for the future demand.

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Section: Africamentioning

confidence: 99%

A Review of immigration obstacles to PON-FTTH and its evolution around the world

2021

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“…Optical signals will suffer from absorption, scattering etc, thus the range and the capacity of wireless channel are degraded [3,4]. Orthogonal frequency division multiplexing access (OFDMA) has become a leading multiple access candidate scheme for beyond fourth/fifth generation (4G/5G) wireless systems, due to its flexibility in resource allocation and robustness against multi-path fading effect [5][6][7][8][9]. In this paper, we employ the coherent modulation technique to improve the receiver sensitivity, the effects of absorption and scattering to MPSK-OFDMA signals can be reflected by the free space channel attenuation coefficient.…”

Section: Introductionmentioning

confidence: 99%

“…In this paper, coherent optical orthogonal frequency division multiplexing access (CO-OFDMA) technique is adopted in the FSO communication system. M-ary phase shift keying (MPSK, M=4,8,16) downstream signals are transmitted at 40Gb/s for 100 meters and 300 meters transmission under five weather conditions (sunny, light rain, moderate rain, snow, heavy fog). And the characteristics of the received signals are analyzed.…”

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Analysis of Coherent MPSK-OFDMA Signals in FSO Communication System under Complex Weather Conditions

Zhou

Shao

Zhou

et al. 2017

2017 3rd International Conference on Computational Systems and Communications (ICCSC 2017)

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Abstract. Free space optical (FSO) communication is a potential technology for last-mile applications. The major advantages are the high transmission rates, inherent security, and unlicensed spectrum. However, in practical applications, the main challenge for FSO communication systems is the performance degradation imposed by the different atmospheric conditions. In this paper, coherent optical orthogonal frequency division multiplexing access (CO-OFDMA) technique is adopted in the FSO communication system. M-ary phase shift keying (MPSK, M=4,8,16) downstream signals are transmitted at 40Gb/s for 100 meters and 300 meters transmission under five weather conditions (sunny, light rain, moderate rain, snow, heavy fog). And the characteristics of the received signals are analyzed. In sunny day, the received phase information of constellation diagram is obvious, and the BER is 10 -4.5. In rainy, snow and foggy days, the system can still maintain communication for short transmission.

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Investigation of Polarization Effect in Coherent Optical Orthogonal Frequency Division Multiplexing System

Cited by 2 publications

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A Review of immigration obstacles to PON-FTTH and its evolution around the world

A Review of immigration obstacles to PON-FTTH and its evolution around the world

Analysis of Coherent MPSK-OFDMA Signals in FSO Communication System under Complex Weather Conditions

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