Performance Improvement and Cost Reduction Techniques for Radio Over Fiber Communications

Thomas, Varghese; El‐Hajjar, Mohammed; Hanzo, Lajos

doi:10.1109/comst.2015.2394911

Cited by 139 publications

(86 citation statements)

References 127 publications

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“…The advantages of the ROF-aided architecture include ability to implement multiple-inputmultiple-output techniques, ease of system upgrades, better resource allocation, better wireless coverage and higher power efficiency [1]. A comprehensive study of ROF techniques and its advantages has been provided in [1,3,9].…”

Section: Introductionmentioning

confidence: 99%

“…The RAP performs minimum signal processing and is not expensive, while most of the signal processing hardware is retained in the BS and is shared by multiple cells [9,10]. The advantages of the ROF-aided architecture include ability to implement multiple-inputmultiple-output techniques, ease of system upgrades, better resource allocation, better wireless coverage and higher power efficiency [1]. A comprehensive study of ROF techniques and its advantages has been provided in [1,3,9].…”

Section: Introductionmentioning

confidence: 99%

“…Over the past decade, the number of wireless devices has witnessed an exponential increase, besides becoming more bandwidth demanding [1]. The solution to the bandwidth crunch is a migration to higher radio-frequency (RF) frequencies, where there is a large amount of unutilised spectrum [2].…”

Section: Introductionmentioning

confidence: 99%

“…Fig. 1 also shows a cellular architecture relying on ROF, where multiple cells are served by a single BS by using radio access points (RAPs) that are connected to the BS using optical fibre, which is often referred to as a distributed antenna system [1,8]. The RAP performs minimum signal processing and is not expensive, while most of the signal processing hardware is retained in the BS and is shared by multiple cells [9,10].…”

Section: Introductionmentioning

confidence: 99%

“…The most commonly employed optical double sideband (ODSB) modulation suffers from fibre-dispersion-induced power attenuation, which becomes increasingly severe at higher RF carriers [1]. ODSB modulation may easily be implemented using a direct modulation of the laser source [6].…”

Section: Introductionmentioning

confidence: 99%

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Optical single sideband signal generation relying on a single‐drive Mach–Zehnder modulator for radio over fibre communications

2016

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Optical single sideband (OSSB) signals are conventionally generated using a dual-drive Mach-Zehnder modulator (MZM) or by using a single-drive MZM in conjunction with a fibre Bragg grating filter. In this study, the authors propose and mathematically characterise a novel radio over fibre downlink in which an OSSB signal is generated using a single-drive, rather than dual-drive, MZM without any additional filter. Additionally, their proposed scheme can achieve optical upconversion of the electronic signal. Furthermore, in addition to cost advantages, the proposed scheme's BER Q3 performance is better than the classical OSSB signal generation scheme.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Optical single sideband signal generation relying on a single‐drive Mach–Zehnder modulator for radio over fibre communications

2016

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Performance improvement of 60‐GHz wireless optical systems with reverse‐parallel hybrid modulation scheme

Bhatia

Prakash

Saini

2018

Int J Communication

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This paper improves the performance of 60-GHz wireless optical system including radio over fibre (RoF) and radio over free space optics (RoFSO), based on novel reverse-parallel (RP) hybrid modulation scheme. This scheme combines the chromatic dispersion compensation technique of parallel modulation with energy efficiency manipulation technique of reverse modulation.Superior functioning of RoFSO is provided with reverse modulation compared with normal modulation. Comparative investigations are performed by loading 60-GHz RF signal with 2.5 and 10-Gbps data and modulating it with both reverse and hybrid modulators. Hybrid modulation performed better with improved BER of 10 −23 at distance of 51 km for 2.5-Gbps data compared with reverse modulation with BER of 10 −7 .

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A full‐duplex radio over fiber architecture employing 12 Gbps 16 × 16 optical multiple input multiple output for next‐generation communication networks

Iqbal

Raza

Butt

et al. 2020

Trans Emerging Tel Tech

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In this paper, a full duplex Millimeter Wave (mm-wave) enabled Radio-over-Fiber (RoF) architecture is proposed for Distributed Antenna Systems (DAS). This architecture is capable of achieving transmission of 16 × 16 optical Multiple Input Multiple Output (MIMO) spatial streams at 12 Gbps per spatial stream by employing Wavelength Division Multiplexing (WDM) and exploiting its other degrees of freedom such as polarization states and modes of wavelengths. A single laser source based multi-wavelength comb and wavelength reuse techniques along with Plastic Optical Fiber (POF) are employed to make the proposed architecture cost efficient.Optical heterodyne detection is performed at the Radio Access Unit (RAU) to generate mm-wave carrier frequency at 60 GHz. Channel equalization is achieved for Pulse Amplitute Modulation (PAM-4) data signal by employing Least Mean Square (LMS) equalizer to mitigate the optical fiber channel effects. Our proposed system supports 16 × 12 Gbps for Downlink (DL) and Uplink (UL) transmissions. To evaluate the performance of the proposed system, we compare the receiver sensitivities at FEC limit of 3.8 × 10 −3 of Bit Error Ratio (BER) of Back to Back (B2B) system, employing no fiber effects, with its counterparts. We show that acceptable power penalties for the fiber lengths of 200 meter and 400 meter are achieved for both LP01 and LP11 modes in DL and UL directions.

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Performance Improvement and Cost Reduction Techniques for Radio Over Fiber Communications

Cited by 139 publications

References 127 publications

Optical single sideband signal generation relying on a single‐drive Mach–Zehnder modulator for radio over fibre communications

Optical single sideband signal generation relying on a single‐drive Mach–Zehnder modulator for radio over fibre communications

Performance improvement of 60‐GHz wireless optical systems with reverse‐parallel hybrid modulation scheme

A full‐duplex radio over fiber architecture employing 12 Gbps 16 × 16 optical multiple input multiple output for next‐generation communication networks

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