Multiresolution Coding Using Amplitude and Phase Modulations for Holographic Data Storage
スポンサーリンク
概要
- 論文の詳細を見る
A new data coding method using both amplitude and phase modulations is proposed for increasing the coding rate in a holographic memory. The phase modulation code has a lower resolution than the conventional sparse block code used as the amplitude modulation code. The phase modulation code can add more than 1 bit to the amplitude modulation code. We show that the coding rate can be increased up to 0.78 from 0.67 in the $3:9$ amplitude modulation code when the binary phase code is added. We also show that the bit error rate and signal-to-noise ratio in the amplitude data are improved by adding the phase modulation code in speckle shift multiplexing. The histogram of the phase distribution is also separated well.
- 2011-09-25
著者
-
Nitta Kouichi
Department Of Computer And Systems Engineering Faculty Of Engineering Kobe University
-
Matoba Osamu
Department Of Applied Physics Faculty Of Engineering Osaka Unviersity
-
Matoba Osamu
Department of Systems Science, Graduate School of System Informatics, Kobe University, Kobe 657-8501, Japan
-
Nitta Kouichi
Department of Systems Science, Graduate School of System Informatics, Kobe University, Kobe 657-8501, Japan
-
Hiramatsu Ryosuke
Department of Systems Science, Graduate School of System Informatics, Kobe University, Kobe 657-8501, Japan
-
Shigaki Masanobu
Department of Systems Science, Graduate School of System Informatics, Kobe University, Kobe 657-8501, Japan
関連論文
- Parallel Two-Step Phase-Shifting Digital Holography Using Polarization
- 2-D structure reconstruction for a DOT method based on linear perturbation approach (特集 赤外線技術とその応用)
- Learning Generalization by Validation Set
- Characteristics of Weight Function in a Steady-state Diffusion Optical Tomography
- Optical Switching Elements Using Controllable Defect Modes in One-Dimensional Photonic Crystals
- Range Technique in Scattering Medium Using a Needle-Fiber Optical Coherence Tomography System
- Optical Learning Neural Network Using Photorefractive Waveguides
- Modification of Photorefractive Waveguides in Lithium Niobate by Guided Beam for Optical Dynamic Interconnection
- Analysis of Photo-Induced Waveguide in Lithium Niobate Crystal
- Improvement of Storage Capacity Using Confocal Scheme in Reflection-Type Holographic Memory System with Speckle Shift Multiplexing
- Multiresolution Coding Using Amplitude and Phase Modulations for Holographic Data Storage
- Detection and Evaluation of Security Features Embedded in Paper Using Spectral-Domain Optical Coherence Tomography
- Oil Leakage Detection System for Plant Inspection
- Background Noise Reduction in an Integrated Volume Holographic Imaging Element for Eye-Gaze Detection
- Imaging Characteristics of Transmission-Type Volume Holographic Imaging Elements
- Full-Field Optical Coherence Tomography System with Controllable Longitudinal Resolution
- Optical Switching Elements Using Controllable Defect Modes in One-Dimensional Photonic Crystals
- An Optical Parallel System for Prime Factorization