Asynchronous Contention Resolution Diversity ALOHA: Making CRDSA Truly Asynchronous
| Autor: | Riccardo De Gaudenzi, Guray Acar, Eloi Garrido Barrabés, Oscar del Rio Herrero |
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| Rok vydání: | 2014 |
| Předmět: |
Scheme (programming language)
business.industry Computer science Applied Mathematics ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS Volume (computing) Throughput Shared medium Computer Science Applications Asynchronous communication Aloha Demodulation Electrical and Electronic Engineering business computer Random access computer.programming_language Computer network |
| Zdroj: | IEEE Transactions on Wireless Communications. 13:6193-6206 |
| ISSN: | 1536-1276 |
| DOI: | 10.1109/twc.2014.2334620 |
| Popis: | Following the introduction of contention resolution diversity slotted ALOHA (CRDSA), a number of variants of the scheme have been proposed in literature. A major drawback of these slotted random access (RA) schemes is related to the need to keep slot synchronization among all transmitters. The volume of signaling generated to maintain transmitters' slot synchronization is impractical for large networks. In this paper, we describe in detail asynchronous contention resolution diversity ALOHA (ACRDA), which represents the evolution of the CRDSA RA scheme. ACRDA provides better throughput performance with reduced demodulator complexity and lower transmission latency than its predecessor while allowing truly asynchronous access to the shared medium. The performance of the ACRDA protocol is evaluated via mathematical analysis and computer simulations and is compared with that of CRDSA. |
| Databáze: | OpenAIRE |
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