Photonic generation of background-free millimeter-wave ultra-wideband signals (Invited Paper)

Li, Wei; Li, Ming; Zhu, Na

doi:10.3788/col201715.010007

Cited by 2 publications

(1 citation statement)

References 18 publications

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“…However, there is still some modification we can make on the existing MMW-RoF schemes to improve the cost-effectiveness. At the transmitter side, photonics-aided MMW signal generation technologies can be adopted to overcome the limitation of bandwidth-insufficient electrical devices [20][21][22] . At the receiver side, we can simply use an envelope detector (ED) to replace the function of a coherent detector, which usually includes expensive high-speed mixers and MMW local oscillators (LOs).…”

Section: Introductionmentioning

confidence: 99%

W-band radio-over-fiber transmission system with delta-sigma modulation and direct detection

Zhou

Liu

2023

中国光学快报

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We experimentally built a W-band photonics-aided millimeter-wave radio-over-fiber transmission system and demonstrated the delivery of up to 8192-ary quadrature amplitude modulation (QAM) signal. Discrete multitone signals are converted into 1-bit data streams through delta-sigma modulation and then modulated onto a 76.2 GHz carrier. An envelope detector is used at the receiver side for direct detection. The results prove that our proposed system can support 2048QAM and 8192QAM transmission while meeting the hard decision forward error correction threshold of 3.8 × 10 −3 and the soft decision forward error correction threshold of 4.2 × 10 −2 , respectively. We believe this cost-effective scheme is a promising candidate for future high-order QAM millimeter-wave downlink transmission.

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Section: Introductionmentioning

confidence: 99%

W-band radio-over-fiber transmission system with delta-sigma modulation and direct detection

Zhou

Liu

2023

中国光学快报

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Photonic frequency-octupling scheme for stable microwave generation based on two incoherent optical sources

Chen¹,

Wang²,

Lu³

et al. 2020

OSA Continuum

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In this paper, a real-time frequency-octupling photonic generator scheme that can realize stable microwave signal generation by using two incoherent optical sources without the support of phase-locked loops is successfully demonstrated, which proves that the improved feed-forward modulation is a feasible method for reducing phase noise. The principle of the proposed generator is illustrated by theory, simulation, and experiment. A 16GHz stable microwave signal with a bandwidth less than 0.2MHz is generated by using a 2GHz driving signal, and a 64GHz optical millimeter wave signal is obtained by using an 8GHz driving signal. Furthermore, a purity 320GHz terahertz wave signal is obtained by simulation based on the same principle and setup. The results show that the terahertz signal has good transmission characteristic and fine eye diagram in the 40.5km fiber link. In addition, to enhance the flexibility and feasibility of the generator, the feasible range of the modulation index and a signal enhancement method are also explored.

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Photonic generation of background-free millimeter-wave ultra-wideband signals (Invited Paper)

Cited by 2 publications

References 18 publications

W-band radio-over-fiber transmission system with delta-sigma modulation and direct detection

W-band radio-over-fiber transmission system with delta-sigma modulation and direct detection

Photonic frequency-octupling scheme for stable microwave generation based on two incoherent optical sources

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