ComputingNotes

Channel Estimation

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The goal is to solve for H (the Channel) in the equation: Y=H⋅X+N (Received Signal = Channel × Transmitted Signal + Noise) [1]W. Shen, “Deep Learning-Enabled Channel Estimation for Reconfigurable Intelligent Surfaces-Aided Wireless Communications”. 1. Pilot Insertion (The “Known” Data) The receiver cannot estimate the channel using random user data because it doesn’t know what ... Read More

MNIST PCA

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https://medium.com/@azimkhan8018/a-beginners-guide-to-deep-learning-with-mnist-dataset-0894f7183344https://ranasinghiitkgp.medium.com/principal-component-analysis-pca-with-code-on-mnist-dataset-da7de0d07c22https://github.com/mkosaka1/MNIST_PCA_CNN/blob/main/PCA%20%2B%20CNN.ipynbhttps://gist.github.com/tommct/1490cdf856d745ba41c1ac99ada2b579

Channel Estimation

by ComputingNotes
https://au.mathworks.com/help/lte/ug/channel-estimation.html There are various factors that affect wireless signals. A phone may try to connect to a tower station, but multiple factors such as being in basement, being in moving train etc., the connection might be lost. This is due to the change in the channel of wireless communication system. Now the question is, can ... Read More

Reinforcement Learning

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https://au.mathworks.com/content/dam/mathworks/ebook/gated/reinforcement-learning-ebook-all-chapters.pdf Reinforcement Learning: Type of machine learning, where a computer agent learns to perform a task through a process of repeated trial and error within a dynamic environment. The goal is to learn what to do, how to map situations to take certain actions that minimize a numerical reward signal. Eg. RL trained computer gains ... Read More

Learning Joint Detection, Equalization and Decoding for Short-Packet Communications – Paper Notes

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S. Dörner, J. Clausius, S. Cammerer, and S. ten Brink, “Learning Joint Detection, Equalization and Decoding for Short-Packet Communications,” IEEE Transactions on Communications, vol. 71, no. 2, pp. 837–850, Feb. 2023, doi: 10.1109/TCOMM.2022.3228648. A machine learning-based approach for joint detection, synchronization, equalization, and decoding in short-packet wireless communications, where messages must first be detected before ... Read More

Quantum Computing Fundamentals – Multiple Qubits

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Book source: Quantum Computation and Quantum Information by Michael A. Nielsen and Isaac L. Chuang Similar to classical qubits, 2 qubit systems have 4 computational basis states. One of the important state is Bell State. Correlation in measurements of qubits in bell state.

Quantum Computing Fundamentals – Qubits

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Source book: Quantum Computation and Quantum Information, Michael A. Neilsen and Isaac L. Chuang Analogy between classical bit and quantum bit (qubit).Classical bit has 0 or 1 value whereas qubit can have state $|0\rangle$ or $|1\rangle$ along with linear combination ot those states (superposition). While classical bit can be measured deterministically with value either 0 ... Read More

Quantum Computing – Fundamental Concepts

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Nielsen, M. A., & Chuang, I. L. (2010). Quantum computation and quantum information. Cambridge university press. Key events in the field of quantum computation are, occurance of various crises in physics such as “ultraviolet catastrophe” in twentieth century with modern theory of quantum quantum mechanics starting in 1920s. Various other crucial algorithms are no-cloning theorem, Turing ... Read More
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