Vertaile menetelmiä

	Nollatukahdutus- ja minimikeskineliövirhe-ekvalisaatio	Ortogonaalinen taajuusjakoinen multipleksointi (OFDM)	Shannonin kanavakapasiteettiteoreema
Tieteenala	Tietoliikennetekniikka	Tietoliikennetekniikka	Tietoliikennetekniikka
Menetelmäperhe	Process / pipeline	Process / pipeline	Process / pipeline
Syntyvuosi	1974	1971	1948
Kehittäjä	Saleh Mansour and Paul Zervos	Weinstein and Ebert	Claude Shannon
Tyyppi	linear equalization algorithm	multicarrier modulation scheme	fundamental theoretical bound
Alkuperäislähde	Proakis, J. G. (2001). Digital Communications (4th ed.). McGraw-Hill.	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.	Shannon, C. E. (1948). A mathematical theory of communication. Bell System Technical Journal, 27(3), 379-423.
Rinnakkaisnimet	channel equalization, interference cancellation	multicarrier modulation	channel capacity, information theory bound
Liittyvät	5	5	5
Tiivistelmä	Zero-Forcing (ZF) and Minimum Mean-Square Error (MMSE) equalization are fundamental linear receiver algorithms for combating intersymbol interference in dispersive channels. Developed in the context of data transmission theory, these methods form the basis of modern channel equalization in wireless and wired systems. While ZF aggressively cancels interference, MMSE balances interference suppression with noise enhancement, making it the optimal linear solution under Gaussian noise.	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.	Shannon's channel capacity theorem, published in 1948, establishes the maximum rate at which information can be reliably transmitted over a noisy channel. Expressed as C = B log2(1 + S/N) for additive white Gaussian noise (AWGN), it is a fundamental bound in information theory and communications engineering. Shannon proved that reliable communication is possible at any rate below capacity, and impossible above it. This theorem underpins the design of all modern communication systems and motivates coding theory, modulation, and signal processing techniques.