Cascaded IF-Over-Fiber Links With Hybrid Signal Processing for Analog Mobile Fronthaul

Tanaka, Kazuki; Kao, Hsuan-Yun; Ishimura, Shota; Nishimura, Kosuke; Kawanishi, Tetsuya; Suzuki, Masatoshi

doi:10.1109/jlt.2020.3001930

Cited by 27 publications

(6 citation statements)

References 22 publications

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“…The motivation to choose the IFoF scheme for the complete RAU design over the other configurations is driven by the fact that this approach is considered the main candidate to develop high data capacity wireless networks in densely populated areas. These future networks need to be deployed with a very high number of short-reach nodes in a cost-efficient way, which is the reason why IFoF systems are generating an increasing interest over the last years [31,32].…”

Section: Discussionmentioning

confidence: 99%

Radio over Fiber: An Alternative Broadband Network Technology for IoT

et al. 2020

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Wireless broadband access networks have been positioning themselves as a good solution for manufacturers and users of IoT (internet of things) devices, due mainly to the high data transfer rate required over terminal devices without restriction of information format. In this work, a review of two Radio over Fiber strategies is presented. Both have excellent performance and even offer the possibility to extend wireless area coverage where mobile networks do not reach or the 802.11 network presents issues. Radio Frequency over Fiber (RFoF) and intermediate Frequency over Fiber (IFoF) are two transmission strategies compatible with the required new broadband services and both play a key role in the design of the next generation integrated optical–wireless networks, such as 5G and Satcom networks, including on RAU (Remote Antenna Unit) new functionalities to improve their physical dimensions, employing a microelectronic layout over nanometric technologies.

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Section: Discussionmentioning

confidence: 99%

Radio over Fiber: An Alternative Broadband Network Technology for IoT

et al. 2020

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“…We could also flexibly select the number of output IF signals (either one or two) from the FPGA. Note that the latency occurring in the DSP stage was measured to be 2.8 us [7]. The output from the demultiplexer was up-converted to 28 GHz and injected into another MZM.…”

Section: Methodsmentioning

confidence: 99%

“…According to IMT-2020, the fifth-generation (5G) system is expected to provide a data capacity as high as 20 Gbps per cell and reduce end-to-end latency to less than 1 ms [3][4][5]. In mobile networks, on the other hand, a centralized radio access network (C-RAN) architecture has been adopted to accommodate connectivities between central units (CUs) and distributed units (DUs) [6,7]. In this architecture, digital fiber-optic interfaces such as common public radio interface (CPRI) have been widely employed.…”

Section: Introductionmentioning

confidence: 99%

“…In the demonstration, the total aggregated bandwidth was 10 GHz (32 × 200MHz). By employing a frequency converter and channel selector, [7] demonstrated IFoF transmission with a capacity of up to 24 Gbps (18 × 0.36 GHz). Moreover, [22] successfully demonstrated a CPRI-equivalent capacity of 1 Tbps using a parallel intensity/phase modulation (IM/PM) transmitter.…”

Section: Introductionmentioning

confidence: 99%

“…In Ref. [7], we have already reported transmission experiments including cascaded IFoF/RoF links. In the demonstration, we transmitted multiple IF signals aggregated in the IF domain, and then they were de-aggregated using an FPGA-based demultiplexer.…”

Section: Introductionmentioning

confidence: 99%

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End-to-End Demonstration of Fiber-Wireless Fronthaul Networks Using a Hybrid Multi-IF-Over-Fiber and Radio-Over-Fiber System

et al. 2021

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This paper reports an end-to-end demonstration of a fiber-wireless mobile fronthaul (MFH) network based on hybrid intermediate-frequency-over-fiber (IFoF) and radio-over-fiber (RoF) links using a 28-GHz millimeter-wave (MMW) band. We successfully transmitted 24 64-QAM OFDM signals with a total bandwidth of 9.12 GHz over 20-km broadband IFoF, 1-km narrowband IFoF, 500-m RoF, and 10-m free-space links with an aggregate capacity of up to 34.2 Gbps, which complies with the required peak data capacity of IMT-2020. A digital demultiplexer was exploited to flexibly perform channel selection and frequency conversion. The obtained results show the feasibility of implementing fiber-wireless systems with the hybrid IFoF/RoF links for future mobile fronthaul networks.

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RoF for Indoor Network

Cho

2024

Handbook of Radio and Optical Networks Convergence

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Cascaded IF-Over-Fiber Links With Hybrid Signal Processing for Analog Mobile Fronthaul

Cited by 27 publications

References 22 publications

Radio over Fiber: An Alternative Broadband Network Technology for IoT

Radio over Fiber: An Alternative Broadband Network Technology for IoT

End-to-End Demonstration of Fiber-Wireless Fronthaul Networks Using a Hybrid Multi-IF-Over-Fiber and Radio-Over-Fiber System

RoF for Indoor Network

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