Theoretical and experimental investigation of direct detection optical OFDM transmission using beat interference cancellation receiver

Nezamalhosseini, S. Alireza; Chen, Lawrence R.; Zhuge, Qunbi; Malekiha, Mahdi; Marvasti, Farokh; Plant, David V.

doi:10.1364/oe.21.015237

Cited by 42 publications

(18 citation statements)

References 21 publications

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“…Recently, a number of SSBI compensation techniques have been investigated for singlepolarization DD SCM systems, operating either optically [9][10][11] or digitally [12][13][14][15][16][17][18][19][20][21][22][23][24]. The optical schemes offer superior compensation gain, but have the drawback of increasing the optical transceiver complexity.…”

Section: Introductionmentioning

confidence: 99%

Comparison of digital signal-signal beat interference compensation techniques in direct-detection subcarrier modulation systems

Erkılınç

Galdino

et al. 2016

Opt. Express

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Single-polarization direct-detection transceivers may offer advantages compared to digital coherent technology for some metro, back-haul, access and inter-data center applications since they offer low-cost and complexity solutions. However, a direct-detection receiver introduces nonlinearity upon photodetection, since it is a square-law device, which results in signal distortion due to signal-signal beat interference (SSBI). Consequently, it is desirable to develop effective and low-cost SSBI compensation techniques to improve the performance of such transceivers. In this paper, we compare the performance of a number of recently proposed digital signal processing-based SSBI compensation schemes, including the use of single-and two-stage linearization filters, an iterative linearization filter and a SSBI estimation and cancellation technique. Their performance is assessed experimentally using a 7×25 Gb/s wavelength division multiplexed (WDM) single-sideband 16-QAM Nyquist-subcarrier modulation system operating at a net information spectral density of 2.3 (b/s)/Hz.

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Section: Introductionmentioning

confidence: 99%

Comparison of digital signal-signal beat interference compensation techniques in direct-detection subcarrier modulation systems

Erkılınç

Galdino

et al. 2016

Opt. Express

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“…Although a spectral guard-band can be used between the optical carrier and sideband, this reduces the ISD. Although some proposed optical or DSP-based methods to mitigate/cancel the SSBI, allowing the width of the guard-band to be reduced, have been shown to be effective, they come at the price of either a significant degradation in OSNR performance [32], increased optical complexity [33], digital complexity [34] or overheads [35]. High peak-to-average power ratio (PAPR) due to the constructive interference of the subcarriers, leading to high peaks in signal waveform, is another drawback for OFDM signals.…”

Section: Review Of the Wdm Dd Experiments (Isd Of ≥04 B/s/hz)mentioning

confidence: 99%

Spectrally Efficient WDM Nyquist Pulse-Shaped 16-QAM Subcarrier Modulation Transmission With Direct Detection

Erkılınç

Pachnicke

et al. 2015

J. Lightwave Technol.

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The ability to transmit signals with high information spectral density (ISD) using low-complexity and cost-effective transceivers is essential for short-and medium-haul optical communication systems. Consequently, spectrally efficient direct detection transceiver-based solutions are attractive for such applications. In this paper, we experimentally demonstrate the wavelength-division multiplexed (WDM) transmission of 7×12 GHz-spaced dispersion pre-compensated Nyquist pulse-shaped 16-QAM subcarrier modulated channels operating at a net bit rate of 24 Gb/s per channel, and achieving a net optical ISD of 2.0 b/s/Hz. The direct detection receiver used in our experiment consisted of a single-ended photodiode and a single analog-todigital converter. The carrier-to-signal power ratio at different values of optical signal-to-noise ratio was optimized to maximize the receiver sensitivity performance. The transmission experiments were carried out using a recirculating fiber loop with uncompensated standard single-mode fiber and EDFA-only amplification. The maximum achieved transmission distances for single channel and WDM signals were 727 and 323 km below the bit-error ratio of 3.8 × 10 −3 , respectively. To the best of our knowledge, this is the highest achieved ISD for WDM transmission in direct detection links over such distances.Index Terms-Digital signal processing, direct detection, information spectral density, Nyquist pulse shaping, optical fiber communication, single sideband signaling, subcarrier modulation, transceiver design, wavelength division multiplexing.

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“…At the OFDM Receiver (OFDM Rx), the electrical signal at the PIN-PD output is converted to digital and demodulated. Due to the PIN-PD square-law, signal-signal beat interference (SSBI) is generated at the PIN-PD output; to mitigate the SSBI after photodetection and before demodulation, an approach similar to the technique demonstrated in [7] is considered. The usage of such technique allows a reduced VBG, and consequently, a reduced receiver bandwidth after photodetection and higher spectral efficiency.…”

Section: Optical Channelmentioning

confidence: 99%

Impact of inter-band crosstalk due to nonlinear fibre transmission on the performance of direct-detection single-sideband MB-OFDM metro networks

Cruz

Alves

Cartaxo

2015

2015 17th International Conference on Transparent Optical Networks (ICTON)

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The impact of inter-band crosstalk due to nonlinear fibre transmission on the performance of direct-detection single-sideband multi-band orthogonal frequency division multiplexing metro networks is evaluated through numerical simulation for one optical channel. Distortion powers with single-band and with five bands are compared. The number of independent signal runs required to achieve accurate performance estimates is assessed. An average over 16 independent signal runs is shown enough to guarantee an error vector magnitude (EVM) discrepancy not exceeding 0.5 dB from the average EVM obtained with 32 independent signal runs. Inter-band crosstalk due to nonlinear transmission of 5 bands over 240 km of standard single-mode fibre limits the average power at the fibre input to levels not exceeding -2.5 dBm.

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Theoretical and experimental investigation of direct detection optical OFDM transmission using beat interference cancellation receiver

Cited by 42 publications

References 21 publications

Comparison of digital signal-signal beat interference compensation techniques in direct-detection subcarrier modulation systems

Comparison of digital signal-signal beat interference compensation techniques in direct-detection subcarrier modulation systems

Spectrally Efficient WDM Nyquist Pulse-Shaped 16-QAM Subcarrier Modulation Transmission With Direct Detection

Impact of inter-band crosstalk due to nonlinear fibre transmission on the performance of direct-detection single-sideband MB-OFDM metro networks

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