Current Issue : January - March Volume : 2021 Issue Number : 1 Articles : 5 Articles
A 24-GHz direct-conversion transmitter is proposed for in-cabin radar applications.\nThe proposed RF transmitter consists of an I/Q up-conversion mixer, an I/Q local (LO) oscillator\ngenerator, and a power amplifier. To improve the linearity of the I/Q up-conversion mixer, an inverter\ntransconductor with third-order intermodulation (IM3) distortion cancellation is proposed............................................
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In this article, a low-complexity and high-throughput sorted QR decomposition (SQRD)\nfor multiple-input multiple-output (MIMO) detectors is presented. To reduce the heavy hardware\noverhead of SQRD, we propose an efficient SQRD algorithm based on a novel modified real-value\ndecomposition (RVD). Compared to the latest study, the proposed SQRD algorithm can save the\ncomputational complexity by more than 44.7% with similar bit error rate (BER) performance.\nFurthermore, a corresponding deeply pipelined hardware architecture implemented with the\ncoordinate rotation digital computer (CORDIC)-based Givens rotation (GR) is designed....
The range kernel of bilateral filter degrades image quality unintentionally in real environments\nbecause the pixel intensity varies randomly due to the noise that is generated in image sensors.\nFurthermore, the range kernel increases the complexity due to the comparisons with neighboring pixels\nand the multiplications with the corresponding weights. In this paper, we propose a noise-aware range\nkernel, which estimates noise using an intensity difference-based image noise model and dynamically\nadjusts weights according to the estimated noise, in order to alleviate the quality degradation of\nbilateral filters by noise....
In this study, a novel IR projector driver that can minimize nonuniformity in electric circuits,\nusing a dual-current-programming structure, is proposed to generate high-quality infrared (IR) scenes\nfor accurate sensor evaluation. Unlike the conventional current-mode structure, the proposed system\nreduces pixel-to-pixel nonuniformity by assigning two roles (data sampling and current driving)\nto a single transistor................................
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