OFDM
OFDM is a multicarrier modulation technique that divides a wideband channel into many narrowband orthogonal subcarriers. Introduced by Weinstein and Ebert in 1971, it exploits the duality between time and frequency domains to efficiently use spectrum while mitigating intersymbol interference in frequency-selective channels. OFDM is now the standard for high-speed wireless systems including WiFi, cellular LTE, and digital broadcasting.
Allikakirje
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- Weinstein, S. B., & Ebert, P. M. (1971). Data transmission by frequency-division multiplexing using the discrete Fourier transform. IEEE Transactions on Communication Technology, 19(5), 628-634. · DOI 10.1109/TCOM.1971.1090705
- Alves, H., Nouri, M., & Latva-aho, M. (2015). Performance analysis of orthogonal frequency division multiplexing for wireless networks. IEEE Access, 3, 1627-1640. · URL
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