Diversity-multiplexing tradeoff for log-normal fading channels
| Autor: | Hatef Nouri, Murat Uysal, Farid Touati |
|---|---|
| Přispěvatelé: | Özyeğin University, Uysal, Murat, Nouri, H. |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Engineering
Nakagami fading channel Logarithm Diversity-multiplexing tradeoff (DMT) Ultra-wideband channels MIMO Diversity-multiplexing trade-off Channel estimation 050801 communication & media studies Fading channels 02 engineering and technology Data_CODINGANDINFORMATIONTHEORY Topology Multiplexing MIMO systems Communication channels (information theory) 0508 media and communications Signal-to-noise ratio Rician fading 0202 electrical engineering electronic engineering information engineering Electronic engineering Fading Optical communication Log-normal fading Electrical and Electronic Engineering Single input single output case Computer Science::Information Theory Log-normal channels Signal to noise ratio business.industry 05 social sciences ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS Diversity-multiplexing tradeoffs (DMT) 020206 networking & telecommunications Codes (symbols) Feedback control Diversity gain Ultra-wideband (UWB) Optical wireless Receiving antennas Telecommunication repeaters business Outage probability Multiple-input multiple-output (MIMO) system |
| Popis: | Although there has been a growing interest on the study of diversity-multiplexing tradeoff (DMT), the existing works are mostly restricted to the outcomes reported for Rayleigh, Rician, and Nakagami fading channels. In this paper, we investigate the optimal tradeoff in the presence of log-normal fading, which provides an accurate model for indoor wireless, optical wireless, and ultra-wideband channels. We consider a multiple-input multiple-output (MIMO) log-normal channel, derive the outage probability expression, and then present the asymptotical DMT expression. It is shown that the asymptotical maximum diversity gain tends to infinity with logarithm of signal-to-noise ratio (SNR). To have further insight, we normalize the DMT with that of single-input single-output case and express the relative asymptotical DMT of the MIMO log-normal channel as a function of the number of transmit and receive antennas. We further study DMT for finite SNRs and demonstrate convergence to the asymptotical case. Extensive numerical results are provided to corroborate the analytical derivation. Scopus |
| Databáze: | OpenAIRE |
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