منابع مشابه
The Aloha System
THE ALOHA SYSTEM is composed of a related series of contracts and grants from a variety of funding agencies with principal support from ARPA, which deal with two main themes: computer communications (TASK 1), and computer structures (TASK 2). Under computer-communications there is work in (a) Studies on computer communications using radio and satellites, (b) The development of a prototype radio...
متن کاملImproving LoRaWAN Performance Using Reservation ALOHA
LoRaWAN is one of the new and updated standards for IoT applications. However, the expected high density of peripheral devices for each gateway, and the absence of an operative synchronization mechanism between the gateway and peripherals, all of which challenges the networks scalability. In this paper, we propose to normalize the communication of LoRaWAN networks using a Reservation-ALOHA (R-A...
متن کاملSuperimposed Codes and ALOHA system
{We study an application of superimposed codes 1, 2, 3] to the ALOHA-system 4] with a central station. These codes increase the transmission rate 4].
متن کاملEnhanced Contention Resolution Aloha - ECRA
Random Access (RA) Medium Access (MAC) protocols are simple and effective when the nature of the traffic is unpredictable and random. In the following paper, a novel RA protocol called Enhanced Contention Resolution ALOHA (ECRA) is presented. This evolution, based on the previous Contention Resolution ALOHA (CRA) protocol, exploits the nature of the interference in unslotted Aloha-like channels...
متن کاملStability Analysis of Hybrid ALOHA
We perform stability analysis of a recently proposed MAC protocol, hybrid ALOHA, based on the multipacket reception (MPR) model. Hybrid ALOHA distinguishes from conventional slotted ALOHA by allowing conditional collision-free channel estimation and simultaneous transmissions, and hence improves the MPR capability of the system. The stability analysis of the two-user case (N = 2) has been condu...
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ژورنال
عنوان ژورنال: Nature Climate Change
سال: 2012
ISSN: 1758-678X,1758-6798
DOI: 10.1038/nclimate1441