Abstract
An application of Orthogonal Frequency Division Multiplexing (OFDM) method to optical disc recording/readout is presented. OFDM has been widely used in the field of telecommunication owing to its highly efficient frequency usage. However OFDM has not been applied to optical disc recording because it is a multiple data transfer method and needs to record analog signals. Partial Response Maximum Likelihood (PRML) used in the current optical disc systems requires a certain kind of analog recording. Although optical recording usually creates binary marks, it is possible to obtain arbitrary analog readout signals by using PWM method. Another technique to generate analog signals using the oversampled binary recording is described and applied to multiple level recording. In addition, it is found that the level adjustment of multiple carriers for OFDM leads to the advantage when it is applied to the optical disc system. Using the simple transfer function model of the optical disc system, two types of readout signals using PRML and OFDM are calculated and then their qualities are compared. Since Quadrature Amplitude Modulation (QAM) method can be combined with OFDM, it is possible to increase the recoding density of optical disc systems. A method employing OFDM with 64-QAM and the pre-enhance method to the high frequency carrier shows an ability of 1.5 times recording density of the conventional Bru-ray Disc (BD).
| Original language | English (US) |
|---|---|
| Title of host publication | Optical Data Storage 2017 |
| Subtitle of host publication | From New Materials to New Systems |
| Publisher | SPIE |
| Volume | 10384 |
| ISBN (Electronic) | 9781510612259 |
| DOIs | |
| State | Published - Jan 1 2017 |
| Event | Optical Data Storage 2017: From New Materials to New Systems, ODS 2017 - San Diego, United States Duration: Aug 6 2017 → … |
Other
| Other | Optical Data Storage 2017: From New Materials to New Systems, ODS 2017 |
|---|---|
| Country | United States |
| City | San Diego |
| Period | 8/6/17 → … |
Fingerprint
Keywords
- Blue-ray disc(BD)
- Constellation map
- Optical Disc
- Orthogonal Frequency Division Multiplexing
- Oversampling
- Quadrature Amplitude Modulation(QAM)
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering
Cite this
An application of OFDM method to optical disc recording. / Katayama, Ryuichi; Takashima, Yuzuru; Saito, Kimihiro.
Optical Data Storage 2017: From New Materials to New Systems. Vol. 10384 SPIE, 2017. 103840I.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - An application of OFDM method to optical disc recording
AU - Katayama, Ryuichi
AU - Takashima, Yuzuru
AU - Saito, Kimihiro
PY - 2017/1/1
Y1 - 2017/1/1
N2 - An application of Orthogonal Frequency Division Multiplexing (OFDM) method to optical disc recording/readout is presented. OFDM has been widely used in the field of telecommunication owing to its highly efficient frequency usage. However OFDM has not been applied to optical disc recording because it is a multiple data transfer method and needs to record analog signals. Partial Response Maximum Likelihood (PRML) used in the current optical disc systems requires a certain kind of analog recording. Although optical recording usually creates binary marks, it is possible to obtain arbitrary analog readout signals by using PWM method. Another technique to generate analog signals using the oversampled binary recording is described and applied to multiple level recording. In addition, it is found that the level adjustment of multiple carriers for OFDM leads to the advantage when it is applied to the optical disc system. Using the simple transfer function model of the optical disc system, two types of readout signals using PRML and OFDM are calculated and then their qualities are compared. Since Quadrature Amplitude Modulation (QAM) method can be combined with OFDM, it is possible to increase the recoding density of optical disc systems. A method employing OFDM with 64-QAM and the pre-enhance method to the high frequency carrier shows an ability of 1.5 times recording density of the conventional Bru-ray Disc (BD).
AB - An application of Orthogonal Frequency Division Multiplexing (OFDM) method to optical disc recording/readout is presented. OFDM has been widely used in the field of telecommunication owing to its highly efficient frequency usage. However OFDM has not been applied to optical disc recording because it is a multiple data transfer method and needs to record analog signals. Partial Response Maximum Likelihood (PRML) used in the current optical disc systems requires a certain kind of analog recording. Although optical recording usually creates binary marks, it is possible to obtain arbitrary analog readout signals by using PWM method. Another technique to generate analog signals using the oversampled binary recording is described and applied to multiple level recording. In addition, it is found that the level adjustment of multiple carriers for OFDM leads to the advantage when it is applied to the optical disc system. Using the simple transfer function model of the optical disc system, two types of readout signals using PRML and OFDM are calculated and then their qualities are compared. Since Quadrature Amplitude Modulation (QAM) method can be combined with OFDM, it is possible to increase the recoding density of optical disc systems. A method employing OFDM with 64-QAM and the pre-enhance method to the high frequency carrier shows an ability of 1.5 times recording density of the conventional Bru-ray Disc (BD).
KW - Blue-ray disc(BD)
KW - Constellation map
KW - Optical Disc
KW - Orthogonal Frequency Division Multiplexing
KW - Oversampling
KW - Quadrature Amplitude Modulation(QAM)
UR - http://www.scopus.com/inward/record.url?scp=85034083213&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85034083213&partnerID=8YFLogxK
U2 - 10.1117/12.2272738
DO - 10.1117/12.2272738
M3 - Conference contribution
AN - SCOPUS:85034083213
VL - 10384
BT - Optical Data Storage 2017
PB - SPIE
ER -