เปรียบเทียบวิธี

	แบบจำลองการแพร่กระจายคลื่นแบบ Ray Tracing	ZF/MMSE Equalization
สาขาวิชา	โทรคมนาคม	โทรคมนาคม
ตระกูล	Process / pipeline	Process / pipeline
ปีกำเนิด	1993	1974
ผู้ริเริ่ม	Maciel, Bertoni, and Xia	Saleh Mansour and Paul Zervos
ประเภท	deterministic propagation algorithm	linear equalization algorithm
แหล่งต้นตำรับ	Maciel, T. F., Bertoni, H. L., & Xia, H. H. (1993). Unified approach to prediction of propagation over buildings for all ranges of frequencies. IEEE Transactions on Vehicular Technology, 42(1), 41-45.	Proakis, J. G. (2001). Digital Communications (4th ed.). McGraw-Hill.
ชื่อเรียกอื่น	deterministic propagation, site-specific modeling	channel equalization, interference cancellation
ที่เกี่ยวข้อง	4	5
สรุป	Ray tracing is a deterministic propagation modeling technique for predicting electromagnetic field strength at specific locations. Instead of empirical formulas (like Okumura-Hata), ray tracing traces paths of electromagnetic energy as it reflects, diffracts, and scatters off buildings and terrain. With accurate 3D geometry and material properties, ray tracing predicts site-specific path loss, multipath delay profiles, and angle of arrival, making it ideal for detailed coverage planning, interference analysis, and system design. Ray tracing is now standard in professional cellular planning tools.	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.