Transceiver Architecture for Incoherent Optical CDMA Networks Based on Polarization Modulation

Karbassian, M. Massoud; Ghafouri‐Shiraz, H.

doi:10.1109/jlt.2008.928523

Cited by 29 publications

(11 citation statements)

References 13 publications

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“…The prime code sequence signal has N chips and d k (t), c k (t) ∈ {0, 1}, where P T denotes a unity rectangular pulse of width T , and T s and T c are the symbol duration and chip duration, F = p 2 = T s /T c . By using the Jones notation [17,18], the electrical field can be represented by the vector of the Jones matrix, J = E x E y T , and two SOPs represented by J H and J Y are orthogonal if their inner product is zero [19]. In the PolSK modulation scheme, the binary bits map into the Jones vectors when the angle of one polarization component is switched relative to the other between two angles [4].…”

Section: Analysis Of the Polsk-ocdma System Modelmentioning

confidence: 99%

Performance Analysis of Polarization Modulated DirectDetection Optical CDMA Systems over Turbulent FSO LinksModeled by the Gamma-Gamma Distribution

Bai

Sato

2015

Photonics

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This paper proposes a theoretical study to characterize the transmission of optical code division multiple access (CDMA) systems deploying polarization shift keying (PolSK) over a free space optical (FSO) link under the impact of atmospheric turbulence. In our analysis, a novel transceiver architecture for atmospheric OCDMA FSO systems based on polarization modulation with direct detection is proposed and discussed. A detailed analytical model for PolSK-OCDMA systems over a turbulent FSO link is provided. Further, we derive a closed-form bit error ratio (BER) and outage probability expressions, taking into account the multiple-access interference (MAI), optical noise and the atmospheric turbulence effect on the FSO link modeled by the Gamma-Gamma distribution. Finally, the results of this study show the most significant parameters that degrade the transmission performance of the PolSK-OCDMA signal over FSO links and indicate that the proposed approach offers improved bit error ratio (BER) performances compared to the on-off-keying (OOK) modulation scheme in the presence of turbulence.

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Section: Analysis Of the Polsk-ocdma System Modelmentioning

confidence: 99%

Performance Analysis of Polarization Modulated DirectDetection Optical CDMA Systems over Turbulent FSO LinksModeled by the Gamma-Gamma Distribution

Bai

Sato

2015

Photonics

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Section: Introductionmentioning

confidence: 99%

“…The digital information is encoded in the state of polarization (SOP) of the laser source [10,11]. Stokes parameters are used to represent the SOP so the symbol constellation is scattered over a three-dimensional (3-D) space [11]. PolSK offers high immunity to the laser phase noise [9,11]; and maintains SOPs over a long propagation link [5,7].…”

Section: Introductionmentioning

confidence: 99%

“…Stokes parameters are used to represent the SOP so the symbol constellation is scattered over a three-dimensional (3-D) space [11]. PolSK offers high immunity to the laser phase noise [9,11]; and maintains SOPs over a long propagation link [5,7]. In comparison to DPSK and FSK modulation techniques, the PolSK signal doesn't suffer from excess frequency chirp generated by the all-optical processing devices [9].…”

Section: Introductionmentioning

confidence: 99%

“…In comparison to DPSK and FSK modulation techniques, the PolSK signal doesn't suffer from excess frequency chirp generated by the all-optical processing devices [9]. Additionally, PolSK modulation is especially attractive for the peak power limited systems because of its constant envelope, which also demonstrates reduced sensitivity to the self phase modulation (SPE) and the cross phase modulation (XPM) [11].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Coherent optical binary polarisation shift keying heterodyne system in the free-space optical turbulence channel

Tang

Ghassemlooy

Rajbhandari

et al. 2011

IET Microw. Antennas Propag.

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In this paper, analytical and simulation results for the bit error rate (BER) performance and fading penalty of a coherent optical binary polarization shift keying (2PolSK) heterodyne system adopted for a free space optical (FSO) communication link modeled as the log-normal and the negative exponential atmospheric turbulence channels are presented. The conditional and unconditional BER expressions are derived, demonstrating the comprehensive similarity between the 2PolSK and the binary frequency shift keying (2FSK) schemes with regards to the system sensitivity. The power penalty due to the non-ideal polarization beam splitter (PBS) is also analyzed. The receiver sensitivity employing 2PolSK is compared with other modulation schemes in the presence of turbulence and the phase noise. The results show that 2PolSK offers improved signal-to-noise ratio (SNR) performance compared to the binary amplitude shift keying (2ASK).

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Optical CDMA with Polarization Modulations

Ghafouri‐Shiraz

Karbassian

2012

Optical CDMA Networks

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Transceiver Architecture for Incoherent Optical CDMA Networks Based on Polarization Modulation

Cited by 29 publications

References 13 publications

Performance Analysis of Polarization Modulated DirectDetection Optical CDMA Systems over Turbulent FSO LinksModeled by the Gamma-Gamma Distribution

Performance Analysis of Polarization Modulated DirectDetection Optical CDMA Systems over Turbulent FSO LinksModeled by the Gamma-Gamma Distribution

Coherent optical binary polarisation shift keying heterodyne system in the free-space optical turbulence channel

Optical CDMA with Polarization Modulations

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