Hybrid Equalized Partial Response Path-Feedback Maximum Likelihood for 35.4 GB Blu-ray Disc ROM

Abstract

In this paper, we consider the acoustic phonon radiation by the plasma waves of quasi-two-dimensional inversion electron layers. The electron-phonon interaction is taken into account using the phenomenological deformation potential in the jellium model.

Study of Interpolated Timing Recovery Phase-Locked Loop with Linearly Constrained Adaptive Prefilter for Higher-Density Optical Disc

“…The adaptive equalized signal is inputted to the ITR block. To improve the qualities of the phase error, a fixed delay tree search (FDTS) detector 13) has been adopted for the assumed partial response (PR) class of the adaptively equalized signal. The FDTS detector has better bit-error rate (bER) performance characteristics for the PR-equalized signal than the threshold level detector.…”

“…The FDTS also has a shorter decision delay than VD for minimizing loop delay. The phase error is calculated by the decision-directed timing error detection method 6,13,14) for the PR-equalized signal. The fractional sample second-order AVF 12) is placed before the interpolator of ITR PLL.…”

“…On the other hand, one of the key factors of improved PLL schemes is the combination of the adaptive equalization of the read back signal before the calculation of the phase error. 7,8) If calculations of phase errors are performed by properly equalized signals, the precision of phase errors could improve evidently. Although those PLL structures 7,8) exhibited good performance characteristics for higher-linear-density BDs, large loop delays for PLL, which exaggerate their PLL performance, were observed.…”

“…7,8) If calculations of phase errors are performed by properly equalized signals, the precision of phase errors could improve evidently. Although those PLL structures 7,8) exhibited good performance characteristics for higher-linear-density BDs, large loop delays for PLL, which exaggerate their PLL performance, were observed. Because adaptive equalizers were placed between the PLL unit and the phase error calculator, some fixed loop delay within the feedback loop was induced.…”

109 Gbit/in.2 Recording on Near-Field Optical Disc Using Combination of Partial-Response Channel and Low-Density Parity-Check Code

“…Fortunately, several approaches to signal processing have also been examined in Blu-ray technologies. [2][3][4] Miyauchi et al 2) have demonstrated that a novel trellis decoding technique for the 17-parity preserve/prohibit (17PP) code is effective for increasing the recording density of the Blu-ray disc. Ohkubo et al proposed a new low-density parity-check (LDPC) coded partial response (PR) 17PP system.…”