Chromatic Dispersion Compensation Using Digital IIR Filtering With Coherent Detection

Goldfarb, Gilad; Li, Guifang

doi:10.1109/lpt.2007.898819

Cited by 69 publications

(30 citation statements)

References 6 publications

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“…In Fig. 1(a) 4 with a roll-off of 0 < ρ < 1 leading to a stopband edge at ω s T = π 1+ρ L . They are designed so that [13].…”

Section: A Effects Of Pulse Shapingmentioning

confidence: 99%

“…With coherent detection schemes, richer constellations, and fast analog to digital converters (ADCs), digital signal processing is playing a growing role in CD compensation [4], [6], [7]. In digital coherent optical receivers, CD is modeled as a frequency response given by [1]- [5] C(e j ω T ) = e…”

mentioning

confidence: 99%

“…This is also referred to as static channel equalization [2] for which FIR or infinite-length impulse response (IIR) filters 1 can be used [1], [2], [4]. This paper uses FIR filters because they (i) are unconditionally stable [8], (ii) can efficiently be implemented in the frequency domain [2], and (iii) do not have limitations on the maximal sampling frequency, as opposed to their IIR counterparts [9].…”

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confidence: 99%

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Optimal Least-Squares FIR Digital Filters for Compensation of Chromatic Dispersion in Digital Coherent Optical Receivers

Eghbali

Johansson

Gustafsson

et al. 2014

J. Lightwave Technol.

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Abstract-This paper proposes optimal finite-length impulse response (FIR) digital filters, in the least-squares (LS) sense, for compensation of chromatic dispersion (CD) in digital coherent optical receivers. The proposed filters are based on the convex minimization of the energy of the complex error between the frequency responses of the actual CD compensation filter and the ideal CD compensation filter. The paper utilizes the fact that pulse shaping filters limit the effective bandwidth of the signal. Then, the filter design for CD compensation needs to be performed over a smaller frequency range, as compared to the whole frequency band in the existing CD compensation methods. By means of design examples, we show that our proposed optimal LS FIR CD compensation filters outperform the existing filters in terms of performance, implementation complexity, and delay.Index Terms-Chromatic dispersion (CD), digital filter, fiber optics, optimal least-squares (LS) FIR filter.

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“…In Fig. 1(a) 4 with a roll-off of 0 < ρ < 1 leading to a stopband edge at ω s T = π 1+ρ L . They are designed so that [13].…”

Section: A Effects Of Pulse Shapingmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Optimal Least-Squares FIR Digital Filters for Compensation of Chromatic Dispersion in Digital Coherent Optical Receivers

Eghbali

Johansson

Gustafsson

et al. 2014

J. Lightwave Technol.

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“…Coherent detection is currently under extensive investigation for long-haul fiber-optic communication systems [1][2][3][4]. Together with the advances in high-speed digital signal processing (DSP) techniques, coherent detection is believed to be one of the next major enabling technologies to realize high spectral efficiency transmission at 100Gb/s per channel and beyond.…”

Section: Introductionmentioning

confidence: 99%

“…Together with the advances in high-speed digital signal processing (DSP) techniques, coherent detection is believed to be one of the next major enabling technologies to realize high spectral efficiency transmission at 100Gb/s per channel and beyond. The flexibility and scalability of DSP in coherent systems are studied for compensation of transmission impairments such as chromatic dispersion (CD) [2][3][4][5], polarization-mode dispersion (PMD) [6][7][8], Kerr nonlinearity [5,[9][10][11][12][13] and carrier phase recovery [14][15][16]. For DSP based CD compensation, Savory et al…”

Section: Introductionmentioning

confidence: 99%

Equalization-enhanced phase noise for 100Gb/s transmission and beyond with coherent detection

Lau

Shieh

Ho³

2010

2010 IEEE International Conference on Communication Systems

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The probability density function and impact of equalizationenhanced phase noise (EEPN) is analytically investigated and simulated for 100 Gb/s coherent systems using electronic dispersion compensation. EEPN impairment induces both phase noise and amplitude noise with the former twice as much as the latter. The effects of transmitter phase noise on EEPN are negligible for links with residual dispersion in excess of 700 ps/nm. Optimal linear equalizer in the presence of EEPN is derived but show only marginal performance improvement, indicating that EEPN is difficult to mitigate using simple DSP techniques. In addition, the effects of EEPN on carrier recovery techniques and corresponding cycle slip probabilities are studied.

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Digital Signal Processing

2014

Fiber Optic Communications

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Chromatic Dispersion Compensation Using Digital IIR Filtering With Coherent Detection

Cited by 69 publications

References 6 publications

Optimal Least-Squares FIR Digital Filters for Compensation of Chromatic Dispersion in Digital Coherent Optical Receivers

Optimal Least-Squares FIR Digital Filters for Compensation of Chromatic Dispersion in Digital Coherent Optical Receivers

Equalization-enhanced phase noise for 100Gb/s transmission and beyond with coherent detection

Digital Signal Processing

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