WRITING
Derivations, useful discoveries, and everyday observations.
11articles2022 — 2025
11 articles
On city streets, e-bikes occupy a curious position between cars and pedestrians, order and chaos. In Beijing, they can be the fastest option for trips within a few kilometers, and their growing numbers create all kinds of strategic encounters with the existing traffic system. Watching these games makes me think that AI still has a long way to go before it can imitate them.
When I started blogging earlier this year, I used GPT-5 to generate images, but the results were still rather plain. Research kept me busy and the blog sat idle for a while. Now Gemini 3 Nano Banana Pro has taken another step forward, and I have a little more time, so I decided to replace the old images and see whether it could handle the job. These are some of the prompts I used; feel free to try them if you like the pictures.
How can researchers work more comfortably with remote Ubuntu servers?
Content or traffic? Careful work or shortcuts?
After an IEEE paper is accepted, the final submission may require figures in EPS format. If your original figures are PDFs, how can you convert them quickly?
An application that can help improve connections to Chinese websites from an overseas university network.
Some color schemes I use as an engineering student.
Initializing receive probabilities for the BI-AWGN channel, with a detailed derivation of log-likelihood ratios and their expressions under different signal-to-noise ratio conventions.
An introduction to classical adaptive channel-equalization methods, including Sato, constant-modulus (CMA), multimodulus (MMA), decision-directed (DD), modified CMA (MCMA), and CADAMA algorithms.
Frequency-domain matched filtering with O&M timing synchronization, followed by the properties, error formula, and frequency-offset behavior of the Gardner detector.
Derivations and implementation notes for variable-rate pulse shaping and high-speed parallel matched filters.
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