Category: Basic
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Ever dropped two pebbles in a pond and watched the ripples? The waves meet and either grow stronger or cancel out. Beamforming works exactly the same way—just with wireless signals instead of water.
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OFDM is the secret highway system behind today’s lightning-fast Wi-Fi, 4G and 5G. Instead of jamming data into one narrow lane, OFDM splits it across thousands of tiny subcarrier lanes, each carrying a portion of the data in parallel.
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A wireless channel is the invisible path a signal travels through, from a transmitter to receiver. Discover the science behind channel models, from ideal channels to fading channels with bouncing waves and obstacles.
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QAM is the most adopted Modulation Scheme in Modern Communication Systems. In this post, we explore the basic principle of QAM and show how power constraints shape its design.
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In this post, I will explain modulation without using technical jargons, but simply using analogy of water waves.