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Okumura-Hata Voorspellingsmodel voor Zendwegverlies×Multiple-Input Multiple-Output (MIMO)×Shannon Kanaalcapaciteitstheorema×
VakgebiedTelecommunicatieTelecommunicatieTelecommunicatie
FamilieProcess / pipelineProcess / pipelineProcess / pipeline
Jaar van ontstaan196819951948
GrondleggerMasahiro Okumura and Masahiro HataTelatar, Foschini, and GansClaude Shannon
Typeempirical path loss modelspatial multiplexing techniquefundamental theoretical bound
Oorspronkelijke bronOkumura, Y., Ohmori, E., Kawano, T., & Fukuda, K. (1968). Field strength and its variability in VHF and UHF land mobile radio service. Review of the Electrical Communication Laboratory, 16(9-10), 825-873. link ↗Telatar, I. (1999). Capacity of multi-antenna Gaussian channels. European Transactions on Telecommunications, 10(6), 585-595. DOI ↗Shannon, C. E. (1948). A mathematical theory of communication. Bell System Technical Journal, 27(3), 379-423. DOI ↗
Aliassenpath loss model, propagation predictionspatial multiplexing, antenna diversitychannel capacity, information theory bound
Verwant455
SamenvattingThe Okumura-Hata model is an empirical propagation model for predicting path loss in mobile radio systems. Developed by Okumura (1968) and mathematically formalized by Hata (1980), it is one of the most widely used models for cellular network planning. The model predicts median path loss as a function of frequency, distance, and antenna heights, with environment-specific correction factors. Despite its age, the Okumura-Hata model remains a standard in 2G/3G planning and is often used as a baseline for more sophisticated models.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.
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ScholarGateMethoden vergelijken: Okumura-Hata Model · MIMO · Shannon Capacity. Geraadpleegd op 2026-06-20 via https://scholargate.app/nl/compare