Polarisation phase-shift keying: a coherent transmission technique with differential heterodyne detection

Calvani, R.; Caponi, R.; Cisternino, F.

doi:10.1049/el:19880435

Cited by 52 publications

(16 citation statements)

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“…In the large body of the literature, some [11,18,35] has mentioned polarization based modulation. However, most of them do not contain a system design.…”

Section: Related Workmentioning

confidence: 99%

Wearables Can Afford

Yang

Wang

Zhang

et al. 2015

Proceedings of the 13th Annual International Conference on Mobile Systems, Applications, and Services

189

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Visible Light Positioning (VLP) provides a promising means to achieve indoor localization with sub-meter accuracy. We observe that the Visible Light Communication (VLC) methods in existing VLP systems rely on intensity-based modulation, and thus they require a high pulse rate to prevent flickering. However, the high pulse rate adds an unnecessary and heavy burden to receiving devices. To eliminate this burden, we propose the polarization-based modulation, which is flicker-free, to enable a low pulse rate VLC. In this way, we make VLP light-weight enough even for resourceconstrained wearable devices, e.g. smart glasses. Moreover, the polarization-based VLC can be applied to any illuminating light sources, thereby eliminating the dependency on LED.This paper presents the VLP system PIXEL, which realizes our idea. In PIXEL, we develop three techniques, each of which addresses a design challenge: 1) a novel color-based modulation scheme to handle users' mobility, 2) an adaptive downsampling algorithm to tackle the uneven sampling problem of wearables' low-cost camera and 3) a computational optimization method for the positioning algorithm to enable real-time processing. We implement PIXEL's hardware using commodity components and develop a software program for both smartphone and Google glass. Our experiments based on the prototype show that PIXEL can provide accurate realtime VLP for wearables and smartphones with camera resolution as coarse as 60 pixel × 80 pixel and CPU frequency as low as 300MHz.

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“…In the large body of the literature, some [11,18,35] has mentioned polarization based modulation. However, most of them do not contain a system design.…”

Section: Related Workmentioning

confidence: 99%

Wearables Can Afford

Yang

Wang

Zhang

et al. 2015

Proceedings of the 13th Annual International Conference on Mobile Systems, Applications, and Services

189

View full text Add to dashboard Cite

show abstract

“…Polarization Shift Keying (PolSK) was considered during recent years as a digital modulation candidate for the optical fiber communications [4,5]. It is applicability is a result of the property that an orthogonal state of polarization (SOP) pair from a monochromatic light source at the input of the Single Mode Fiber (SMF) leads to orthogonal SOP pair at the fiber output, although the input SOP is not maintained in general.…”

Section: Introductionmentioning

confidence: 99%

Polarized Optical Orthogonal Code for Optical Code Division Multiple Access Systems

Tarhuni¹,

Elmusrati

Korhonen

2006

PIER

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Abstract-In this paper a Polarized Optical Orthogonal Code (Polarized-OOC) is proposed by exploiting the polarization property of the fiber and the chip's polarization state. The polarized-OOC code is generated using the concept of Mark Position Difference (MPD) set. Polarized-OOC code cardinality is shown to be two times that of the conventional OOC which reflects an increase in the number of supported users. Furthermore, since the correlation properties of the constructed code are the same as that of conventional OOC, error rate performance is evaluated in the same way as in conventional OOC. Also, a simple procedure for fiber-induced polarization rotation compensation is introduced. We then use simulations to show that relative polarization axis misalignment between the desired user and interfering users leads to violation of the correlation properties of the proposed code. 126Tarhuni, Elmusrati, and Korhonen

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“…Unfortunately, the assumption that POLSK systems are insensitive to LPN [2, 6, 71 seems to be overoptimistic; in fact, experimental results show that the effects of LPN cannot be considered negligible [8] and should be, indeed, adequately compensated (for example, [4]).…”

Section: Introductionmentioning

confidence: 99%

A novel procedure for jones' parameters estimation for M‐4QAM optical systems

Cusani

Baccarelli

Galli

1997

Trans Emerging Tel Tech

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Abstract.A new procedure is proposed for estimating the State-of-Polansation of the received optical signal in FourQuadrature Amplitude Modulation systems. The proposed solution, which is obtained on the basis of the Maximum Likelihood criterion, is merely electronic and operates in the presence of laser phase noise, photodetection noise and crosspolarisation interference. It employs a suitably designed training sequence to estimate Jones' parameters in the data-aided training mode. A proper decision-directed procedure is then activated to lock-in the estimated parameters in the operative mode. The variances of the resulting estimation errors are evaluated and the overall system performance is given in terms of Bit Error Probability versus signal-to-noise ratio. The theoretical analysis and the computer simulations show the superiority of the proposed recovery procedure with respect to alternative solutions recently proposed in literature.

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Polarisation phase-shift keying: a coherent transmission technique with differential heterodyne detection

Cited by 52 publications

References 1 publication

Wearables Can Afford

Wearables Can Afford

Polarized Optical Orthogonal Code for Optical Code Division Multiple Access Systems

A novel procedure for jones' parameters estimation for M‐4QAM optical systems

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