Wireless Communications from the Ground Up: An SDR Perspective
The early 20th century saw the development of wireless telephony, which enabled voice communication over radio waves. In 1906, Reginald Fessenden, a Canadian inventor, transmitted audio signals over radio waves for the first time. This marked the beginning of wireless telephony.
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in 1901, shivering on a cold hill in Newfoundland. He held a telephone receiver to his ear, listening through the crackle of atmospheric noise. Thousands of miles away in England, a giant transmitter sent a simple signal: three short dots—the letter "S" in Morse code. When that faint click-click-click Wireless Communications from the Ground Up: An SDR
: The author provides educational material and course details on Wireless Pi , which includes a downloadable Table of Contents and a sample Guide to Complex Numbers Academic Hosting
At its core, wireless communication is the transmission of information using electromagnetic (EM) waves. When an alternating current passes through an antenna, it generates a propagating electric and magnetic field – a radio wave. Key properties include: Factors Affecting Radio Wave Propagation: : The author
Once the physics are understood, the second step is translating digital logic (0s and 1s) into physical analog waveforms.