Real-time experimental demonstration of a computationally efficient hybrid OFDM DFMA PON

Tyagi, Tushar; Giddings, R. P.; Tang, J. M.

doi:10.1016/j.yofte.2022.103106

Cited by 4 publications

(7 citation statements)

References 15 publications

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“…The proposed P2P flexible transceivers maintain the salient features of the previous P2MP flexible transceivers, including (1) adaptive channel count variations, (2) flexible channel line rate variations, (3) additional physical layer network security, and (4) great potential for operating in an 'add-as-you-grow' model. More importantly, the proposed P2P flexible transceivers outperform the P2MP flexible transceivers in terms of transceiver digital signal processing (DSP) complexity due to the elimination of digital filtering [13,14]. In addition, due to the use of low-cost IQ mixers, low-speed DACs/ADCs are applicable for the transceivers [15].…”

Section: Introductionmentioning

confidence: 99%

Point‐to‐point intensity modulation and direct detection flexible transceivers incorporating cascaded inverse fast fourier transform/fast fourier transform‐based multi‐channel aggregation/de‐aggregation techniques

Chen,

Wang,

Jin

et al. 2024

IET Optoelectronics

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Point‐to‐point (P2P) flexible transceivers are the key technical enabler to cost‐effectively offer fast, dynamic, and ‘just‐the‐right‐size’ ultra‐dense P2P connectivity for various applications including remote equipment control and distributed fibre networks. However, existing flexible transceivers originally designed for hub‐and‐spoke traffic patterns are sub‐optimal. To effectively address such technical issue, a P2P flexible transceiver incorporating a cascaded inverse fast fourier transform/fast fourier transform‐based multi‐channel aggregation/de‐aggregation technique and analogue in‐phase and quadrature (IQ) mixers is proposed and numerically evaluated in a 56Gbps@20 km intensity modulation and direct detection transmission system. The proposed P2P flexible transceivers not only support adaptive and flexible variations in both channel count and channel line rate but also offer additional physical layer network security.

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Section: Introductionmentioning

confidence: 99%

Point‐to‐point intensity modulation and direct detection flexible transceivers incorporating cascaded inverse fast fourier transform/fast fourier transform‐based multi‐channel aggregation/de‐aggregation techniques

Chen,

Wang,

Jin

et al. 2024

IET Optoelectronics

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“…Nowadays, the forthcoming network services concerned with on‐demand video streaming, internet of things, industry 4.0, and cloud computing all include billions of devices engaging with users and data centers clouds machines across the internet to drive business integrations and consumers. All these services contribute to the high demand explosion on future networks 1 . To provide a flexible, dynamically reconfigurable, reliable, secure, smart, transparent, and high‐resolution scenario, it is significant to seamlessly use traditional access optical networks for fifth generation (5G) fronhaul/backhaul networks 2 .…”

Section: Introductionmentioning

confidence: 99%

“…on future networks. 1 To provide a flexible, dynamically reconfigurable, reliable, secure, smart, transparent, and highresolution scenario, it is significant to seamlessly use traditional access optical networks for fifth generation (5G) fronhaul/backhaul networks. 2 A passive optical network (PON) has been already emerged as the most promising solution to the bottleneck issue of 5G-based access networks.…”

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confidence: 99%

Wheel‐based 5G fronthaul/backhaul hybrid MDM‐NGPON/FSO system under Gamma‐Gamma turbulence and weather effects

Kumari,

Arya

2023

Int J Communication

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SummaryThis work presents the bidirectional and symmetric 40 Gbps wheel architecture comprising 16 channels‐based bidirectional hybrid next generation passive optical network with free space optics (NGPON/FSO) system using mode division multiplexing (MDM) scheme. The system incorporates a low‐cost high bandwidth and integrated time and wavelength division multiplexing with orthogonal frequency division multiplexing (TWDM‐OFDM) for data transmission over mixed fiber‐FSO links to various end users at donut modes 0 and 1. This system enhances the fifth generation (5G)‐based networks reliability, survivability, and flexibility, especially in rural places where the core fiber link may be damaged/destroyed under diverse turbulent and weather conditions. The obtained results depict the faithful multimode fiber range of 100 km with fixed FSO range of 100 m at −17 dBm receiver sensitivity and low power penalty of 0.2 dB at 10−9 bit error rate. Maximum FSO range of 2800 m under weak‐to‐strong Gamma‐Gamma turbulence and the effect of fog, rain, snow, and snow with rain can be obtained successfully with fixed 50 km fiber length. Also, the proposed wheel architecture provides superior performance over hybrid ring‐mesh architecture with high split ratio of 1:64. Moreover, the system can sustain up to 70 remote nodes at symmetric 10 Gbps throughput providing high gain, high optical signal‐to‐noise ratio, and low noise figure. The comparative literature work also reveals that the proposed architecture offers high bandwidth, security, long‐reach, and cost‐effectiveness in 5G fronthaul/backhaul networks.

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“…Additionally, an IMDD-DFMA PON employing DFMA channel interference cancellation scheme at 32.5Gbps transmission rate over 26km SSMF has been proposed in [8]. Moreover, in [9], a real-time experimental demonstration of 0.7Gbps hybrid OFDM DFMA-PON over 26km SSMF to provide SDN-controlled network reconfig-urability and offer elastic bandwidth provisions as well as highly efficient usage of network resources has been reported. Although, both [8] and [9],lacks in limited data rate, costeffectiveness and transmission distance.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, in [9], a real-time experimental demonstration of 0.7Gbps hybrid OFDM DFMA-PON over 26km SSMF to provide SDN-controlled network reconfig-urability and offer elastic bandwidth provisions as well as highly efficient usage of network resources has been reported. Although, both [8] and [9],lacks in limited data rate, costeffectiveness and transmission distance. Additionally, DFMA PON in [10] and [4] has also been presented but with a restricted data rate of 0.75Gbps and SMF range of 26.5km.…”

Section: Introductionmentioning

confidence: 99%

Simulation Investigation of Symmetric 8 × 25 Gbps Hybrid TWDM-DFMA PON for Long-Reach Applications

Kumari

Arya

Al-Khafaji³

2023

IEEE Access

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By utilizing digital filter multiple access (DFMA) technique in the optical access networks allows immense potential to offers superb backward compatibility with existing optical as well as forthcoming cloud access networks. Time and wavelength division multiplexing passive optical network (TWDM-PON) incorporating DFMA depicts the promise of absolute and economical optical access networks for 5G based long-reach high speed applications. This simulation work in OptiSystem software, presents a bidirectional hybrid TWDM-DFMA PON system at 25Gbps data rate employing eight uplink and eight downlink channels for long-reach applications. The advantage of this work is to provide a high-bandwidth as well as advanced last-mile network having adequate resource utilization for fiber links. The minimal received power of -19dBm in uplink as well as -14dBm in downlink transmission can be obtained by the proposed system over 50km fiber length at 200Gbps data rate. The system offers faithful data transmission over 150km and 100km in uplink and downlink directions, respectively, over a single fiber link. Further, the system can support end optical units up to 250 in uplink and 120 in downlink successfully. Moreover, a power budget improvement of 4dB and a maximum optical signal to noise ratio (OSNR) of 91dB can be obtained for the system. Besides this, the proposed PON is most efficient compared to other conventional PONs in terms of less energy consumption, better spectral usage, long-reach transmission at high data rate and ability to handle large number of end users.INDEX TERMS Digital filter multiple access (DFMA), passive optical network (PON), time and wavelength division multiplexing (TWDM).

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Real-time experimental demonstration of a computationally efficient hybrid OFDM DFMA PON

Cited by 4 publications

References 15 publications

Point‐to‐point intensity modulation and direct detection flexible transceivers incorporating cascaded inverse fast fourier transform/fast fourier transform‐based multi‐channel aggregation/de‐aggregation techniques

Point‐to‐point intensity modulation and direct detection flexible transceivers incorporating cascaded inverse fast fourier transform/fast fourier transform‐based multi‐channel aggregation/de‐aggregation techniques

Wheel‐based 5G fronthaul/backhaul hybrid MDM‐NGPON/FSO system under Gamma‐Gamma turbulence and weather effects

Simulation Investigation of Symmetric 8 × 25 Gbps Hybrid TWDM-DFMA PON for Long-Reach Applications

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