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The energy consumption in residential section accounts for over 30% of the world and cost-effective indoor energy management is important. Visible light communication based on variable pulse position modulation (VPPM) is a scheme for efficient and convenient indoor energy management. This paper proposes methods for detecting dimmable packet. First, we describe a method based on correlation bank expanding...
Energy usage optimization in homes is an important issue because over 30% of the energy consumption of the world occurs in the residential sector. One of key points for home energy management is energy monitoring and control through low-power and low-cost wireless communication. The block-coded group PPM (BC-GPPM) is a scheme with low complexity typically proportional to power and cost because the...
This paper presents an improved block truncation coding (BTC) for color image compression in LCD overdrive. To improve the BTC, single bit plane is used to represent the R, G and B bit planes and correct the two representative levels. Simulation results show that the proposed algorithm can significantly improve the compression ratio of the BTC from 4:1 to 6:1 with the limited performance losing about...
In this paper, we proposed a new packet detection algorithm with high performance and low hardware complexity for chirp-spread-spectrum (CSS) in AWGN channel. There are two typical conventional packet detection algorithms. First, the conventional algorithm based on mixed-correlation (CABMC) has a good performance by using matched filter to remove unused band noise, but the algorithm has a high hardware...
In this paper, we propose a novel high speed VLSI architecture of full search-variable block size motion estimator (VBSME) supporting multiple reference frames. In the proposed architecture, four current macrobocks are concurrently compared with a single search window (SW) of the reference frame to find the best matched block.By reusing the SW of the reference frame and scheduling the architecture...
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