Radio over fiber for mobile communications

Wake, D.; Webster, M.; Wimpenny, Gerard; Beacham, K.; Crawford, Larry J.

doi:10.1109/mwp.2004.1396863

Cited by 105 publications

(38 citation statements)

References 1 publication

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“…At receiving satellites, received signal are demodulated using photodiodes and thus original signal is recovered [4][5][6][7]. In OWC, Orthogonal Frequency Division Multiplexing (OFDM) technology has played an vital role for it capacity in reducing multipath fading effects [8][9][10][11][12][13][14][15][16]. OFDM uses subcarriers which are separated by specific frequencies of overlapping band for data transportation.…”

Section: Introductionmentioning

confidence: 99%

High Speed and Long Reach DPSK-OFDM-Is-OWC under Impact of Space Turbulences

Sharma¹,

Kumar²,

Chandni³

2018

IJCA

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Inter-satellite communication is a free-space optical technology which is used to establish communication between satellites in space. This work is focused on the transmission of 10 Gbps data over 10,000 km inter-satellite communication link by incorporating orthogonal frequency division multiplexing scheme. The performance of proposed system is evaluated in terms of signal-to-noise ratio, total received power, radio-frequency spectrum and constellation diagrams. KeywordsInter-satellite communication (Is-OWC), Orthogonal frequency division multiplexing (OFDM), Differential phase shift key (DPSK).

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Section: Introductionmentioning

confidence: 99%

High Speed and Long Reach DPSK-OFDM-Is-OWC under Impact of Space Turbulences

Sharma¹,

Kumar²,

Chandni³

2018

IJCA

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“…Optical fibers are valuable in RoF systems for achieving high bandwidth and low signal loss, in addition to immunity to electromagnetic interference [2]. RoF requires the use of sharing of expensive equipment responsible for coding-decoding, multiplexing-demultiplexing, frequency up-down conversion from the centralized station to all the base stations [3]. This results in reduction in cost and system complexity.…”

Section: Introductionmentioning

confidence: 99%

The Role and Challenges of Free-space Optical Systems

Chaudhary¹,

Amphawan²

2014

Journal of Optical Communications

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Abstract:Complementing wireless radio networks with free-space optics (FSO) achieves high data rates by modulating radio subcarriers over an optical carrier without expensive optical fiber cabling, enabling a pervasive platform for reaching underserved areas. In this paper, we review the main features of FSO for terrestrial and inter-satellite communications. Simulations of 1 Gbps data transmission through FSO links in both terrestrial and inter-satellite communications have been investigated to highlight potential atmospheric challenges in FSO.

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“…Each distributed antenna is connected to a central controller via a dedicated RF or optical link [5]. This architecture mimics a macroscopic multi-antenna system which can achieve low values of signal correlation [6].…”

Section: Introductionmentioning

confidence: 99%

Frequency-Reuse Planning of the Down-Link of Distributed Antenna Systems with Maximum-Ratio-Combining (MRC) Receivers

Castaneda-Trujillo

Sámano‐Robles

Gameiro

2012

IEEE Latin Am. Trans.

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Abstract-Distributed antenna systems (DAS) have been shown to considerably outperform conventional cellular systems in terms of capacity improvement and interference resilience. However, the influence of frequency reuse planning on the performance of DAS remains relatively unknown. To partially fill this gap, this paper presents a comparative analysis of the down-link of DAS versus conventional cellular systems using different values of frequency reuse factor. The analysis assumes Rayleigh fading channels and it also considers maximum-ratio-combining (MRC) receivers at the user terminals to exploit diversity both in the transmission and reception links. Numerical evaluation of the analytical expressions shows that, in general, for most of the cases DAS can achieve better performance figures than conventional cellular systems using considerably smaller values of frequency reuse factor. Conversely, DAS can significantly improve the throughput (2x-3x) and power consumption (6-10 dB) of conventional systems when using the same frequency reuse factor. An interesting result shows that in some particular cases DAS outperform conventional cellular systems no matter the frequency reuse factor used by the latter one, which indicates an effective capacity gain provided by the combined operation of DAS and MRC receivers.

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Radio over fiber for mobile communications

Cited by 105 publications

References 1 publication

High Speed and Long Reach DPSK-OFDM-Is-OWC under Impact of Space Turbulences

High Speed and Long Reach DPSK-OFDM-Is-OWC under Impact of Space Turbulences

The Role and Challenges of Free-space Optical Systems

Frequency-Reuse Planning of the Down-Link of Distributed Antenna Systems with Maximum-Ratio-Combining (MRC) Receivers

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