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The core concept of smart grid (SG) is to achieve the intellectual scheduling and control by applying modern information communication and other advanced technology. Many countries choose Long-Term-Evolution (LTE) system as the access network communication of power grid due to its high reliability, high transmission efficiency and mature technology. In the background of SG, it tends to appear that...
For most physical stores, procuring customer behavior data and client management is di cult yet crucial. For stores, especially luxury stores, who value returning customers the most, identifying customer's identity and past purchase history would significantly improve the sales by personalizing the recommendation. Many chain stores utilize membership card to collect purchase information and change...
Since high-speed and high-resolution ADCs are needed in communication systems, single ADC can hardly achieve. This paper proposed a timing mismatch estimation and calibration algorithm in Time-Interleaved ADC (TIADC). A multistage differentiator-multiplier cascade (DMC) structure is disclosed for timing mismatch correction. As the present estimation and calibration method, the procedure can be performed...
We propose a blind correction approach to eliminate the distortion imported by timing skew, gain and offset mismatches in time-interleaved analog to digital converters (TIADC). The approach works in digital domain which can be used in M-channel TIADC. The correction algorithm for timing skew mismatch is based on synthesis filter banks and the estimation algorithm uses the crosscorrelation of adjacent...
Rate control plays a significant role for high quality video coding. This paper presents a rate control method for H.264/AVC, using a new bit allocation scheme for both I-frame and P-frame. This scheme is based on our proposed frame complexity measurement and estimation model. The measurement model considers not only the absolute complexity of I-frame and P-frame, respectively, but also the complexity...
In this paper, an adaptive blind calibration method for timing mismatch in time-interleaved ADCs is proposed. A modified correction structure based on Differentiator Multiplier Cascade is presented for error correction. It enables the application of adaptive blind timing estimation, while the adaptive blind estimation method requires the input signal to have a significantly rich spectrum and be slightly...
This paper describes a digital calibration method for reducing the distortion created by timing mismatch in a four-channel time-interleaved analog-to-digital converter (TIADC). It bases on a coordinate rotation digital computer (CORDIC) algorithm for estimating the timing error and a multistage differentiator-multiplier cascade structure for timing error correction. Frequency of the testing signal...
Rate control plays a significant role for high quality video coding. This paper presents a rate control method for H.264/AVC using a new bit allocation scheme for P-frame. This scheme is based on our proposed P-frame complexity measurement and estimation model. The measurement model considers not only the absolute complexity of the picture via average gradient, but also the relative histogram difference...
Time-interleaved (TI) Analog-to-Digital Converters (ADC) are efficient for high-speed data acquisition. However, mismatches among different channels in a TIADC system due to manufacturing process variations cause distortion in the sampled signal and degrade the SNR and SFDR significantly. The offset and gain mismatches are the two important error sources for the TIADC system. In this paper, a methodology...
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