Category: Wireless Communication
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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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PUCCH carries control information from your phone back to 5G tower. This information includes acknowledgments, scheduling requests, and channel state reports that are essential for smooth communication. Let’s see how it works.
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Your phone has clever power-saving tricks called DRX (Discontinuous Reception). Sounds techy, but it’s a simple idea: sleep smart, wake up just in time! Let’s see how it works.
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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.