60-GHz optical/wireless MIMO system integrated with optical subcarrier multiplexing and 2x2 wireless communication

Lin, Chi-Hsiang; Huang, H. W.; Zeng, Wei-Siang; Chiang, Shou-Chih; Chang, Hsi-Yu

doi:10.1364/oe.23.012111

Cited by 15 publications

(5 citation statements)

References 9 publications

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“… Modulation Up-Conversion Data Rate Source Distance Advances Ref. Coherent Incoherent Fiber Free-Space External Electrical DPSK 0.31 Gbit/s DFBLD 85 km 5 m • Optical SCM 40 Optical DPSK 0.156 Gbit/s 2-λ LD 100 km — • Midway Optical Phase Conjugation 41 OOK 7.5 Gbit/s CCS-DSB 2-λ LD 50 km 36 m • 2-λ 23 OOK 2.5 Gbit/s CCS-DSB 4-λ TL 50 km 4 m • 4-λ • Optical SCM 42 OFDM 28 Gbit/s EM Laser 25 km — • 2-λ • Optical SCM 28 OFDM 61.5 Gbit/s EM Laser 25 km 3 m • MIMO • Optical SCM • Bit-Loading 43 Direct Electrical OOK 0.622 Gbit/s LD 30 km 3 m • Optoelectronic Mixer 44 Optical OOK 5 Gbit/s DM Laser 100 km — • 2-λ (External Modulation) 47 BPSK ...…”

Section: Resultsmentioning

confidence: 99%

“…To further enlarge the transmission capacity, Lin et al . employed the 2 × 2 multi-input multi-output (MIMO) and bit-loading technics to demonstrate a 61.5-Gbit/s OFDM data transmission over 25-km SMF and 3-m free-space 43 . Although the externally modulated method can deliver the high-quality dual-mode optical carrier to demonstrate the high-speed MMWoF system, it cannot be regarded as a cost-effective and simple solution as the additional data encoder is inevitably required.…”

Section: Resultsmentioning

confidence: 99%

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Long-reach 60-GHz MMWoF link with free-running laser diodes beating

Tsai

Lin

et al. 2018

Sci Rep

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With the remote beating of two mutually incoherent laser carriers, the local-oscillator-free long-reach millimeter-wave over fiber (MMWoF) link at 60-GHz band is demonstrated. The unique schemes of the proposed MMWoF are the wavelength-locked colorless laser diode (CLD) modulator, the mutually incoherent optical carrier for heterodyne MMW generation, and the square-law power envelope detection at receiving end. By directly encoding the single-mode with the CLD modulator, the single-carrier modulated QAM-OFDM data is achieved to release the RF power fading after fiber transmission. The mutually incoherent laser beating enables the optical heterodyne MMW generation with two independent optical carriers, which provides the advantages of local-oscillator-free operation and rules out the requirement of dual-mode optical carrier delivery from central office. At the wireless receiving end, the received QAM-OFDM data is self-down-converted to the baseband by employing the square-law power envelope detection. This eliminates the requirement of local oscillator and rules out the influence of the MMW carrier frequency fluctuation between two mutually incoherent lasers (used at central office and remote node), which effectively provides the MMW carrier immunity against the down-conversion instability caused by clock jitter or carrier incoherence. This architecture ensures the transmission of 16.5-Gbit/s 32-QAM OFDM data over 50 km in SMF and 3 m in free-space with the FEC certificated error vector magnitude of 12%, signal-to-noise ratio (SNR) of 18.4 dB, and bit error rate of 3.8 × 10−3. For multi-channel DWDM-PON applications, the proposed local-oscillator-free MMWoF link can successfully perform 11 DWDM channels of 32-QAM OFDM data access at 16.5 Gbit/s per channel via the wavelength controlling of the CLD modulation stage and the detuning of the beating carrier at remote node.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Long-reach 60-GHz MMWoF link with free-running laser diodes beating

Tsai

Lin

et al. 2018

Sci Rep

Self Cite

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show abstract

“…The straightforward solution to transport independent MIMO signals is to use as many optical links as there are MIMO channels, which leads to an increase in deployment costs. Several works have dealt with this challenge by using different multiplexing schemes to transport mmWave MIMO signals over a single optical link, including Wavelength Division Multiplexing (WDM) [17], Polarization Division Multiplexing (PDM) [18] and Optical Subcarriers Multiplexing (OSCM) [19].…”

Section: Introductionmentioning

confidence: 99%

“…In addition, two LOs are implemented to perform frequency translation of OFDM signals. The authors in [19] used OSCM to transport 2x2 MIMO over Single Mode Fiber (SMF) by using Dual-Parallel Mach-Zehnder Modulators (DP-MZM) and two LOs. However, these architectures are limited to transport only 2x2 MIMO signals.…”

Section: Introductionmentioning

confidence: 99%

Enhanced 4×4 MIMO RoF architecture for 5G mmWave indoor applications at 60 GHz unlicensed band

Azzahhafi¹,

Yahyaoui²,

Moussati³

et al. 2023

Optics Communications

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“…At mmW frequencies, it has been shown that MIMO gain can be achieved in LOS operation [10]. Recently, a few groups have demonstrated 60GHz LOS MIMO with single RAU operation [11][12][13] and CoMP using a two RAU configuration [14]. But the analysis on Distributed MIMO (or CoMP) transmission to exploit spatial diversity and spatial multiplexing at multiple user locations remains to be performed, to understand the performance enhancement in terms of coverage and data rate improvements that may be gained from such systems.…”

mentioning

confidence: 99%

Analog Radio-Over-Fiber Supported Increased RAU Spacing for 60 GHz Distributed MIMO Employing Spatial Diversity and Multiplexing

Habib

Aighobahi

Quinlan

et al. 2018

J. Lightwave Technol.

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The improvements in coverage through spatial diversity and increased data rates through spatial multiplexing using a distributed Multiple-Input Multiple-Output (MIMO) system are important targets for future wireless communications. Here, the appropriate separation of Remote Antenna Units (RAUs) at several user locations in a millimeter-wave system is demonstrated. An analog Radio over Fiber (RoF) fronthaul is used to achieve flexible spacing of distributed RAUs and transports two Gb/s data streams over 2.2km of fiber and up to 8m of 60 GHz wireless transmission distance. A performance comparison is performed between Single-Input Single-Output (SISO) and MIMO operation using different antenna spacing and transmission distance. Results show that the wider RAU spacing enabled by the RoF distribution provides improved results at longer distances, for both spatial diversity and for spatial multiplexing. Verification of a method for measuring each channel coefficient individually and using subsequent MIMO processing on these coefficients, enables an extension to the results showing the feasibility of 30m indoor transmission. Index Terms-Radio-over-Fiber (RoF), Millimeter Wave (mmW), Multiple-input Multiple-output (MIMO)

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60-GHz optical/wireless MIMO system integrated with optical subcarrier multiplexing and 2x2 wireless communication

Cited by 15 publications

References 9 publications

Long-reach 60-GHz MMWoF link with free-running laser diodes beating

Long-reach 60-GHz MMWoF link with free-running laser diodes beating

Enhanced 4×4 MIMO RoF architecture for 5G mmWave indoor applications at 60 GHz unlicensed band

Analog Radio-Over-Fiber Supported Increased RAU Spacing for 60 GHz Distributed MIMO Employing Spatial Diversity and Multiplexing

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