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Множествен вход, множествен изход (MIMO)×Теорема на Шенън за капацитета на канала×Турбо кодиране с итеративно декодиране×
ОбластТелекомуникацииТелекомуникацииТелекомуникации
СемействоProcess / pipelineProcess / pipelineProcess / pipeline
Година на възникване199519481993
СъздателTelatar, Foschini, and GansClaude ShannonClaude Berrou, Alain Glavieux, and Punya Thitimajshima
Типspatial multiplexing techniquefundamental theoretical bounditerative error-correcting code
Основополагащ източникTelatar, 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 ↗Berrou, C., Glavieux, A., & Thitimajshima, P. (1993). Near Shannon limit error-correcting coding and decoding: Turbo-codes. In Proceedings of the IEEE International Conference on Communications (ICC), 1064-1070. DOI ↗
Други названияspatial multiplexing, antenna diversitychannel capacity, information theory bounditerative decoding, concatenated codes
Свързани555
РезюмеMIMO 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.Turbo codes, introduced by Berrou, Glavieux, and Thitimajshima in 1993, are a landmark in channel coding history. They achieve performance within 0.5 dB of the Shannon limit—the theoretical boundary for reliable communication—a feat previously thought impossible with practical complexity. Turbo codes use concatenated convolutional codes with an interleaver and iterative decoding via belief propagation. They were adopted in 3G (UMTS) and remain important in 4G/5G systems alongside LDPC codes.
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ScholarGateСравнение на методи: MIMO · Shannon Capacity · Turbo Code. Извлечено на 2026-06-18 от https://scholargate.app/bg/compare