Effects of noise and distortion on performance of OFDM millimeter-wave RoF systems

Pham, Thu A.; Pham, Hien T. T.; Vu, Lam T.; Dang, Ngoc T.

doi:10.1109/nics.2015.7302181

Cited by 3 publications

(2 citation statements)

References 15 publications

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“…Before being broadcasted to the wireless channel, the signal after PD is amplified by the power amplifier. In the wireless link, the signal mostly degraded due to free-space loss, atmospheric absorption, and rain attenuation [14][15][16][17][18]. Accordingly, the total loss of MMW link can be computed in decibel as 10) where L fs is free space path loss.…”

Section: Wireless Channelsmentioning

confidence: 99%

Hybrid OFDM RoF-Based WDM-PON/MMW Backhaul Architecture For Heterogeneous Wireless Networks

Ngo

Pham

Nguyen

2018

REV J. Electron. Commun.

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In this paper, a hybrid backhaul architecture, which is based on wavelength-division multiplexing passive optical networks (WDM-PON) and millimeter-wave (MMW) communications, is proposed to deliver orthogonal frequency-division multiplexing (OFDM) signals in heterogeneous wireless networks. MMW radio-over-fiber (RoF) technique, which combines the advantages of the both optical fiber and wireless communications, is used to simplify the base stations and provide flexibility long reach and high capacity connections. The feasibility of the proposed hybrid backhaul architecture is investigated via the bit-error rate (BER) performance of a downlink under the impacts of fiber nonlinear, wireless fading and noise components including clipping noise, amplifier noise and photodetector noise. The numerical results obtained from this study help to determine the optimum system parameters such as the optical launched power, modulation index, and amplifier gain so as to minimize the link’s BER.

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Section: Wireless Channelsmentioning

confidence: 99%

Hybrid OFDM RoF-Based WDM-PON/MMW Backhaul Architecture For Heterogeneous Wireless Networks

Ngo

Pham

Nguyen

2018

REV J. Electron. Commun.

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“…A preliminary part of this work that was presented at an international conference [8] only analyzed the effects of noise and distortion. Therefore, in this paper, the effects of various physical layer impairments such as nonlinearity distortion, noise, chromatic dispersion, and fading are simultaneously investigated.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of the Performance of Millimeter-Wave RoF-Based Cellular Backhaul Links

Pham

et al. 2017

Journal of Optical Communications

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In this paper, we study the performance of a next-generation cellular backhaul network that is based on a hybrid architecture using radio-over-fiber (RoF) and millimeter-wave (MMW) techniques. We develop a mathematic model and comprehensively analyze the performance of a MMW/RoF-based backhaul downlink under the impacts of various physical layer impairments originated from both optical fiber and wireless links. More specifically, the effects of nonlinear distortion, chromatic dispersion, fading, and many types of noises including shot noise, thermal noise, amplifier noise, and relative intensity noise are investigated. The numerical results show that the nonlinear distortion, fiber dispersion, and wireless fading are key factors that limit the system performance. Setting the modulation index properly helps minimize the effect of nonlinear distortion while implementing dispersion shifted optical fibers could be used to reduce the impact of dispersion and as a result, they can improve the bit-error rate. Moreover, it is also verified that, to mitigate the effect of multipath fading, remote radio heads should be located as near the remote antenna units as possible.

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Performance analysis of MMW/RoF link in broadband optical-wireless access networks

Pham

et al. 2016

2016 3rd National Foundation for Science and Technology Development Conference on Information and Computer Science (NICS)

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Effects of noise and distortion on performance of OFDM millimeter-wave RoF systems

Cited by 3 publications

References 15 publications

Hybrid OFDM RoF-Based WDM-PON/MMW Backhaul Architecture For Heterogeneous Wireless Networks

Hybrid OFDM RoF-Based WDM-PON/MMW Backhaul Architecture For Heterogeneous Wireless Networks

Numerical Analysis of the Performance of Millimeter-Wave RoF-Based Cellular Backhaul Links

Performance analysis of MMW/RoF link in broadband optical-wireless access networks

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