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Because of large fluctuations and strong randomness of active power generated by renewable energy resources, taking into account the constraints such as battery life cycle, a new battery energy storage system control method based on real-time state-of-charge and variable filter time constant is presented. This method could compensate the fluctuation composition of a particular frequency band of power...
H.264 has become a popular video compression standard for years; however, the complexity of computation and huge amount of external data access are still the main problems. In this paper, we will propose two mechanisms to fulfill high performance H.264 baseline profile decoder on PAC Duo SOC platform. To reduce the complexity of computation, in addition to algorithm optimization, we use parallelizing...
Power consumption becomes a very important criterion for the portable embedded devices and, therefore, many Dynamic Voltage/Frequency Scaling (DVFS) techniques have been introduced. This paper is trying to break down and analyze the power consumed by three main components, DSP logic, local memory, and the external DDR2, of a multi-core SoC platform. There are four configurations for this SoC platform:...
A 2.4/5GHz Fully-Integrated Transceiver is implemented in 65nm CMOS technology. To alleviate the cost of external front-end components, the G-mode RF transmit/receive (T/R) switch and a power-efficient linear CMOS PA are fully integrated on-chip. On the other hand, for better performance, only the A-mode PA is integrated on-chip while the external T/R switch is used. It shows 5dB and 5.5dB NF in the...
Two approaches for parallelization of H.264 decoder, data partition and function partition, are realized on a PAC Duo platform, which contains two Parallel Architecture Core Digital Signal Processors (PACDSP's). Eight baseline CIF sequences are decoded and their execution cycles and waiting cycles are examined. There are three roots hindering the performance of dual-core decoders: inter-core synchronization,...
As the latest international video coding standard, H.264 is gaining importance not only on desktop computers but also on handheld devices. For handheld devices, power consumption of the system is of ultimate importance, which needs to be addressed at every layer of the system design. At the application layer, the code size affects the memory hierarchy behavior, which in turn affects the system power...
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