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In this article, we focus on solving the energy optimization problem for real-time streaming applications on multiprocessor System-on-Chip by combining task-level coarse-grained software pipelining with DVS (Dynamic Voltage Scaling) and DPM (Dynamic Power Management) considering transition overhead, inter-core communication and discrete voltage levels. We(More)
The increasing capacity of NAND flash memory leads to large RAM footprint on address mapping in the Flash Translation Layer (FTL) design. This paper proposes a novel Demand-based block-level Address mapping scheme with two-level Caching mechanism (DAC) for large-scale NAND flash storage systems. The objective is to reduce RAM footprint without sacrificing(More)
The increasing capacity of NAND flash memory leads to large RAM footprint on address mapping in the Flash Translation Layer (FTL) design. The demand-based approach can reduce the RAM footprint, but extra address translation overhead is also introduced which may degrade the system performance. This paper proposes a two-level caching mechanism to selectively(More)
The new write constraints of multi-level cell (MLC) NAND flash memory make most of the existing flash translation layer (FTL) schemes inefficient or inapplicable. In this paper, we solve several fundamental problems in the design of MLC flash translation layer. The objective is to reduce the garbage collection overhead so as to reduce the average system(More)
NAND flash memory is widely used in both hard real-time and soft real-time systems because of its unique properties, such as non-volatility, low power consumption, and fast access time. However, due to the variable garbage collection latency, the response time becomes unpredictable when multiple I/O requests are issued from the file system to flash media.(More)
As a kind of typical embedded system, MANET is a multi-hop self-configuring network with the topology changes dynamically. To model of the security, mobility, and dynamic changes of MANET, trust is used as a novel concept recently. In this paper, based on the classic fuzzy theory, the trust evaluation and the dynamic routing protocols for MANET are(More)
In this paper, we propose a hybrid-level flash translation layer (FTL) called RNFTL (Reuse-Aware NFTL) to improve the endurance and space utilization of NAND flash memory. Our basic idea is to prevent a primary block with many free pages from being erased in a merge operation. The preserved primary blocks are further reused as replacement blocks. In such a(More)
The density of flash memory chips has doubled every two years in the past decade and the trend is expected to continue. The increasing capacity of NAND flash memory leads to large RAM footprint on address mapping management. This paper proposes a novel Demand-based block-level Address mapping scheme with a two-level Caching mechanism (DAC) for large-scale(More)
In pure mobile ad hoc networks, trust based routing protocol is much more efficient at coping with the dynamic topology, open network environments and works well at identifying malicious behaviors. A number of trust routing protocols proposed restrict at standard routing protocols, therefore, lack accuracy in routing selection and rationality at trust(More)