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In this paper, the WSN platform supported for AES encryption. And on the basis of the TDMA protocol, using linear regression and BBS generator, a new WSN protocol which has the ability to change communication channel dynamically was designed.
This paper focuses on efficient utilization of spectrum bandwidth to improve throughput in wireless adhoc networks. As the frequency spectrum is a limited resource for wireless communications and.
Pseudolite technology plays an important role in enhancing the positioning performance of GPS.In the applications,there are many problems,such as timing synchronization,near-far effect,and geometric dilution of precision.In the paper,firstly introduce the near-far.
The comparison of time division multiple access (TDMA) (global system for mobile communication, GSM) and wideband-code division multiple access (W-CDMA) (third generation, 3G) system based on.
The increasing demand for mobile radio services and the scarce bandwidth available suggest to devote considerable research efforts to find more efficient multiple access techniques in order to improve the system capacity. We compare the system performance of three mobile radio systems: the well known TDMA system, which is the basis of the European GSM, the recent CDMA system (a standard.
This paper analyzes the influence of high-speed-caused Doppler drift and timing drift on TDMA satellite communication system,and proposes a synchronization technique of TDMA satellite communication system in high-speed movement,which realizes faster.
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Define TDMA. TDMA synonyms, TDMA pronunciation, TDMA translation, English dictionary definition of TDMA. abbreviation for code-division multiple access: a digital technology used in mobile phones. and TDMA as the candidate MAC protocols to represent the competitive protocol and the non-competitive protocol in this paper.. Research on.
We organized the paper as follows: in Section 2, we review the status of the art in next-generation PON standardization, mainly reviewing the ITU-T NG-PON2 standard. Then in Section 3, we present the FDMA-PON main principles and compare it to TDMA-PON.
In the system, network topology is variable. This paper presents E-TDMA, an efficient TDMA protocol, for the smart meter reading system. Based on Mesh network architecture, E-TDMA partly adjusts the slot allocation by distributed cooperative scheduling, and.
TDMA-based MAC protocol is inherently collision-free and can rule out idle listening since nodes know when to transmit. However, conventional TDMA protocol is not suitable for event-driven applications. In this paper, we present ED-TDMA, an event-driven TDMA protocol for wireless sensor networks.
The access strategy and method of control channel in WMN is an important research project. In this paper, description of access strategy and the method on distributed control channel in WMN based on TDMA are carried out, the coordination mechanism of multiple channels and allocation algorithm of controlling time slot to make the access of control channel fast and fair are proposed.
Abstract: A process on the local host, called a client, needs services from a process usually on the remote host, called a server. A transport layer protocol can either be connectionless or connection-oriented. In a connectionless service, the packets are sent from one party to another with no need for connection establishment or connection release.
As a result, WSN’s connectivity tends to have a very dynamic nature. In this paper, we devise DecTDMA (Decentralized-TDMA), a fully decentralized medium access controller (MAC) that significantly reduces contention. It is based on a self-stabilizing algorithm for time division multiple access (TDMA).
This paper describes a cellular multiple-access scheme based on TDMA for multimedia communication networks. The scheme proposes an admission control of two different multimedia application stream types: real-time and non-real-time.
Abstract: Vehicular ad hoc networks (VANETs) have attracted a lot of attention in the research community in recent years due to their promising applications. VANETs help improve traffic safety and efficiency. Each vehicle can exchange information to inform other vehicles about the current status of the traffic flow or a dangerous situation such as an accident.
The problem of local clock synchronization is studied in the context of media access control (MAC) protocols, such as time division multiple access (TDMA), for dynamic and wireless ad hoc networks. In the context of TDMA, local pulse synchronization mechanisms let neighboring nodes align the timing of their packet transmissions, and by that avoid transmission interferences between consecutive.
In this paper a TDMA based routing scheme is proposed for such wireless sensor networks, where nodes form multiple connected cycles. The proposed method provides fault tolerance, guaranteed delivery times, and low power consumption. The paper discusses the routing scheme and its implementation details, and provides several performance tests.