Hellinger-Distance-Optimal Space Constellations

Si-Ma, Ling-Han; Zhang, Jian; Wang, Binqiang; Zhang, Yanyu

doi:10.1109/lcomm.2017.2650234

Cited by 6 publications

(1 citation statement)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this section, the effectiveness of the EMIS algorithm is verified via simulation results. In the simulations, the power gain of the SPAD receiver is set as α r = 4.52 × 10 14 s/J, the background radiation intensity is β = 7.27 [25], and the variance of ln h is set to be σ 2 t = 0.09. All the simulation results are obtained by averaging over 50000 independent channel realizations.…”

Section: Simulation Resultsmentioning

confidence: 99%

Incorporating Importance Sampling in EM Learning for Sequence Detection in SPAD Underwater OWC

Huang

Chen

et al. 2019

IEEE Access

View full text Add to dashboard Cite

In this paper, an importance sampling-based expectation-maximization (EMIS) algorithm is developed for sequence detection in single-photon avalanche diode underwater optical wireless communication (OWC) systems. To be more specific, the expectation-maximization (EM) algorithm in statistic learning provides a general framework for the sequence detection, and the importance sampling (IS) method is employed for evaluating the minimum mean-square error estimates required in the EM algorithm. Theoretical analysis indicates that the developed EMIS algorithm achieves near-optimal performance with low-complexity symbol-by-symbol detection. The simulation results verify the effectiveness of the proposed EMIS algorithm. INDEX TERMS Underwater optical wireless communication (OWC), single-photon avalanche diode (SPAD), lognormal channel, sequence detection, importance sampling (IS), expectation-maximization (EM) learning.

show abstract

Section: Simulation Resultsmentioning

confidence: 99%

Incorporating Importance Sampling in EM Learning for Sequence Detection in SPAD Underwater OWC

Huang

Chen

et al. 2019

IEEE Access

View full text Add to dashboard Cite

show abstract

Performance Analysis of Single-Photon Avalanche Diode Underwater VLC System Using ARQ

et al. 2017

View full text Add to dashboard Cite

Energy-Efficient Uniquely-Decomposable Multilayer Modulation for Peak-Limited Broadcast DTP Channels

Si-Ma

Zhang

2018

IEEE Photonics J.

View full text Add to dashboard Cite

A multilayer modulation for peak-limited broadcast Poisson channel is designed and consists of three key elements: the transmitted symbol set, the users' data space, and the data-to-symbol mapping. For energy-efficiency, the transmitted symbols are modulated by the square pulse amplitude modulation. Meanwhile, a concept of uniquely decomposable constellation group is developed to resist the nonnegative multiuser interference in power domain. Combining this concept and the transmitted symbol structure, we design the users' data space and the data-to-symbol mapping such that, for this mapping, the transmitted symbol can be uniquely decomposed as elements of users' data space. The above described structure of the multilayer modulation enables not only efficient demodulation of the transmitted symbol from Poisson noisy received signal but also data decoding for each user from the estimation of the transmitted symbol. Extensive computer simulations indicate that the multilayer modulation not only has better overall error performance than the currently available time-sharing protocol, but also allows us to flexibly assign different priority. Additionally, a low-complexity receiver is established for the proposed multilayer modulation, whose error performance gradually approximates that of maximum likelihood receiver with the increment of optical power.

show abstract

Hellinger-Distance-Optimal Space Constellations

Cited by 6 publications

References 16 publications

Incorporating Importance Sampling in EM Learning for Sequence Detection in SPAD Underwater OWC

Incorporating Importance Sampling in EM Learning for Sequence Detection in SPAD Underwater OWC

Performance Analysis of Single-Photon Avalanche Diode Underwater VLC System Using ARQ

Energy-Efficient Uniquely-Decomposable Multilayer Modulation for Peak-Limited Broadcast DTP Channels

Contact Info

Product

Resources

About