विधियों की तुलना करें
चुनी हुई विधियों की आमने-सामने समीक्षा करें; भिन्नता वाली पंक्तियाँ रेखांकित हैं।
| शैनन चैनल क्षमता प्रमेय× | ऑर्थोगोनल फ्रीक्वेंसी डिवीजन मल्टीप्लेक्सिंग (ओएफडीएम)× | |
|---|---|---|
| क्षेत्र | दूरसंचार | दूरसंचार |
| परिवार | Process / pipeline | Process / pipeline |
| उद्भव वर्ष≠ | 1948 | 1971 |
| प्रवर्तक≠ | Claude Shannon | Weinstein and Ebert |
| प्रकार≠ | fundamental theoretical bound | multicarrier modulation scheme |
| मौलिक स्रोत≠ | Shannon, C. E. (1948). A mathematical theory of communication. Bell System Technical Journal, 27(3), 379-423. DOI ↗ | 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 ↗ |
| उपनाम≠ | channel capacity, information theory bound | multicarrier modulation |
| संबंधित | 5 | 5 |
| सारांश≠ | 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. | 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. |
| ScholarGateडेटासेट ↗ |
|
|