Challenges to radio over fiber (RoF) technology and its mitigation schemes – A review

Sharma, Vishal; Singh, Amarpal; Sharma, Ajay K.

doi:10.1016/j.ijleo.2011.02.031

Cited by 31 publications

(6 citation statements)

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“…Henceforth, the simplest and inexpensive passive techniques using narrowband fiber Bragg grating for increasing the modulation depth to provide better transmission performance for RoF systems are reported [9].These techniques can thus be favorably applied in a regular downstream and upstream link in a wavelength reused scheme. To add to this, the performance of the fiber-wireless links can be significantly improved if the optical signal is transmitted at the optimum CSR of 0 dB [10].…”

Section: Page 5 Of 17mentioning

confidence: 99%

A Study of various Trends and Enabling Technologies in Radio over Fiber (RoF) Systems

Sarup

Gupta

2015

Optik

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Section: Page 5 Of 17mentioning

confidence: 99%

A Study of various Trends and Enabling Technologies in Radio over Fiber (RoF) Systems

Sarup

Gupta

2015

Optik

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“…The facilitation of traditional wireless links to meet this need by using microand pico-cell architecture incurs enormous cost for their deployment. So, a versatile front-haul architecture based costeffective solution of RF transmission over fibre can be utilized to provide high-speed wireless access in indoor as well as outdoor applications by merging the benefits of enormous fibre-bandwidth and high wireless link-mobility [1], [2]. Moreover, due to their centralized architecture, it is easier to implement the advanced signal processing methods, for instance, higher order modulation, multi-carrier modulation and MIMO techniques to improve the wireless access in terms of data rate and reliability [3].…”

Section: Introductionmentioning

confidence: 99%

Adaptive $2\times2$ MIMO Employed Wavelet-OFDM-Radio Over Fibre Transmission

Sharma¹,

Sergeyev²,

Kaur³

2020

IEEE Access

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Due to high peak-to-average-power ratio (PAPR) and low spectral-efficiency, the conventional Fast Fourier Transform based orthogonal frequency division multiplexing (OFDM) is losing its place to the other multicarrier modulation schemes. Alternatively, the wavelet treated multiple-input multiple-output (MIMO)-OFDM is gaining its popularity in realization of futuristic 5G networks due to proffering high spectral-efficiency, low-cost and low phase-noise. Subsequently, this work demonstrates a RF transmission system in S-band employing 2 × 2 MIMO-OFDM using orthogonal-and biorthogonal-wavelets with diverse phase shift keying modulation (PSK) schemes. Among the available MIMO configurations, the authors implement spatial diversity as it promises good reliability in noisy links [11]. However, the distribution of Wavelet-OFDM (W-OFDM) signals over a radio over fibre (RoF) link is critically affected by the optical subsystem non-linearity. So, the simplest 2×2 Alamouti's space-time block code (STBC) is implemented in this work to overcome this non-linearity and to realize a less-complex detection. The work is further extended to realize an adaptive MIMO-RoF system employing W-OFDM scheme to adjust itself to a suitable available phase shift keying strategy as per the link-situation to retain an optimal balance of link-quality and spectralefficiency.

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“…Radio over fiber (RoF) technology is a promising and inexpensive way out to reduce the cost of installing micro‐ and pico‐cellular architectures by centralizing the complex RF signal processing functions at a control station (CS) resulting in simple and low‐cost radio access points (RAP). High‐frequency reuse capability, high network capacity in conjunction with low power consumption, and small‐size portable units are the benefits of RoF technology …”

Section: Introductionmentioning

confidence: 99%

“…High-frequency reuse capability, high network capacity in conjunction with low power consumption, and small-size portable units are the benefits of RoF technology. 2,3 In spite of a number of merits offered by RoF systems, it experiences a number of challenging issues. One of these issues is a consequence of multipath fading.…”

Section: Introductionmentioning

confidence: 99%

MIMO‐OFDM‐radio over fiber system incorporating higher‐order space‐time block codes

Kaur

Sharma

2019

Micro & Optical Tech Letters

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Radio over fiber (RoF) is an indispensable technology for the amalgamation of microwave‐ and optical communication, which facilitates a flexible access‐network infrastructure proficient to endow with broadband wireless connectivity over an extensive assortment of applications. Achieving ample spectral efficiency in conjunction with excellent link reliability is the austere menace to the design of such prospect‐integrated systems. Moreover, amalgamation of multiple‐input multiple‐output (MIMO) technology with multicarrier multiplexing (MCM) such as orthogonal frequency division multiplexing (OFDM) is a proficient contender for supporting such next‐generation RoF‐based static‐ and mobile‐wireless systems. Earlier, the MIMO‐based multicarrier RoF systems are limited to the use of fourth‐order spatial diversity (2 × 2 antenna package) using the Alamouti code. Subsequently, the authors investigated the aptness and impetus of such integrated multicarrier RoF systems to provide a reliable and spectrally efficient system and proposed an orthogonal space‐time block code (OSTBC) equipped MIMO‐OFDM‐RoF system by incorporating higher order spatial diversity in conjunction with QAM (Quadrature Amplitude Modulation) schemes. The proposed work is carried out for NLOS (non‐line of sight) and LOS (line of sight) scenarios. Furthermore, the demonstrated work elucidates a relative QoS (Quality of Service) explorations of sixth (3 × 2 antenna package) and ninth order spatial diversity (3 × 3 antenna package) and recommend the optimal antenna package as per the requirements of the proposed integrated system in the demonstrated scenarios.

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Challenges to radio over fiber (RoF) technology and its mitigation schemes – A review

Cited by 31 publications

References 50 publications

A Study of various Trends and Enabling Technologies in Radio over Fiber (RoF) Systems

A Study of various Trends and Enabling Technologies in Radio over Fiber (RoF) Systems

Adaptive $2\times2$ MIMO Employed Wavelet-OFDM-Radio Over Fibre Transmission

MIMO‐OFDM‐radio over fiber system incorporating higher‐order space‐time block codes

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