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The performance of optical time division multiplexing (OTDM) system is limited by a complex combination of noise. In this paper we present a theoretical framework for the optical receiver in OTDM system based on the moment generation function. The proposed receiver model is showed to be more accurate in predicting the bit error rate (BER) performance than(More)
The development of mobile platform has raised an emergent requirement for face-related multimedia applications. However, as the basis of such applications, face detection and tracking still suffers from large facial pose variation and limited computation resource. In this paper, a multi-view and real-time face tracking system is presented for mobile(More)
Considered with the accurate and fast link fault localization algorithm in optical networks, an effective multi-fault localization algorithm is proposed to solve the issue of localizing multi-fault in cycle cover monitoring algorithm. First of all, the monitoring site was chosen for each cycle from the heuristic spanning-tree (HST) cycle covering algorithm;(More)
In this paper, a modified Neural Gas algorithm is proposed and used to approximate hand topology. As original Neural Gas algorithm is intractable for real-time applications, some optimization such as unnecessary adaption removal and simple learning rate function are introduced to make it applicable for real-time applications. With segmented hand area, the(More)
This paper proposes a new feature descriptor named as Local Primitive Code (LPC), which exhibits impressively discriminative capability on various face datasets. Essentially, LPC descriptors are somewhat like filter banks of Gaussian derivatives to capture multi-scale and multi-orientation image local textures but meanwhile enables faster feature(More)
We present a micromagnetic modeling study of microwave assisted magnetic recording (MAMR) on a typical exchange-coupled four-layer media. With the help of an alternating current (ac) magnetic field, the switching field can be reduced, especially at the media resonant frequency. Typical hysteresis loop measurements employ a depth-invariant ac field; however,(More)
We present micromagnetic simulations at various grain sizes of four-layer exchange-coupled composite microwave-assisted magnetic recording (MAMR) systems that have maximized areal density capability using the Nelder-Mead simplex algorithm. We restrict our media to have crystalline KuV/kT > ~100. Our optimized MAMR designs show roughly 120(More)