How does OFDM Overcome ISI?

Explains how the OFDM modulation format is less impacted by delay spread in a communications channel (Intersymbol Interference, ISI) compared to direct modulation. Related videos: (see http://www.iaincollings.com) • What is a Cyclic Prefix in OFDM? https://youtu.be/AJg57AEBtNw • What is Intersymbol Interference ISI? https://youtu.be/I087FUvW2ys • Why is the OFDM Symbol Prefix Shorter in 5G Mobile and 802.11ac WiFi? https://youtu.be/a0aGVPkTOCI • OFDM Waveforms https://youtu.be/F6B4Kyj2rLw • Why is Subcarrier Spacing Bigger in 5G Mobile Communications? https://youtu.be/uyDvjpPn8ms • OFDM and the DFT https://youtu.be/Z4LIgNgNAlI • How are OFDM and xDSL (DMT) Related? https://youtu.be/CET2UuGeEqs • What is a Matched Filter? https://youtu.be/Ci-EjiMJo3I • How are Different Equalization Methods Related? (DFE, ZF, MMSE, Viterbi, OFDM) https://youtu.be/hYNwTTWrp48 • Viterbi Algorithm Explained with an Example https://youtu.be/xxpBHCkypS4 • Autocorrelation and Power Spectral Density (PSD) Examples in Digital Communications https://youtu.be/XWytSLZZP1A • How are Analog Filters and Digital Equalization Related? https://youtu.be/Y5d0mEacOpI • What are Flat Fading and Frequency Selective Fading? https://youtu.be/KiKPFT4rtHg • What are Doppler Shift, Doppler Spread, and Doppler Spectrum? https://youtu.be/LLr3-kotbz4 For a full list of Videos and Summary Sheets, goto: http://www.iaincollings.com .