방법 비교

	제로 포싱 및 최소 평균 제곱 오차 등화	다중 입출력 (MIMO)	섀넌 채널 용량 정리
분야	통신공학	통신공학	통신공학
계열	Process / pipeline	Process / pipeline	Process / pipeline
기원 연도	1974	1995	1948
창시자	Saleh Mansour and Paul Zervos	Telatar, Foschini, and Gans	Claude Shannon
유형	linear equalization algorithm	spatial multiplexing technique	fundamental theoretical bound
원전	Proakis, J. G. (2001). Digital Communications (4th ed.). McGraw-Hill.	Telatar, I. (1999). Capacity of multi-antenna Gaussian channels. European Transactions on Telecommunications, 10(6), 585-595.	Shannon, C. E. (1948). A mathematical theory of communication. Bell System Technical Journal, 27(3), 379-423.
별칭	channel equalization, interference cancellation	spatial multiplexing, antenna diversity	channel capacity, information theory bound
관련	5	5	5
요약	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.	MIMO is a technique that uses multiple transmit and receive antennas to significantly increase channel capacity and reliability. Pioneered theoretically by Telatar (1999) and Foschini & Gans (1998), MIMO exploits multipath propagation—typically a liability in wireless—as an asset by creating independent spatial channels. It is now fundamental to all modern wireless systems including LTE, WiFi-6, and 5G, where it provides both capacity gains through spatial multiplexing and robustness through diversity.	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.