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Unguided Media: Wireless
- A Wireless communication transporting electromagnetic waves without a physical conductor
Wireless Propagation Methods
- Ground - radio waves travel by lowest portion of atmosphere hugging the Earth
- Distance is depends on power of signal
- Sky denotes higher-frequency radio waves radiate upward into ionosphere and then reflect back to Earth
- Line-of-sight means high-frequency signals transmitted in straight lines directly from antenna to antenna
Propagation Methods
LRC - Performance Detects every burst errors up to length n (number of columns) If two bits in one data unit are damaged as well as two bits in exactly same positions
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