An approach for discrete-event simulations of alamouti scheme in ad hoc networks

Mobile ad hoc networks (MANETs) can be defined as a collection of large number of mobile nodes that form temporary network without aid of any existing network infrastructure or central access point. The Efficient routing protocols can provide significant benefits to mobile ad hoc networks, in terms of both performance and reliability. Many routing protocols for such networks have been proposed so far. The main method for evaluating the performance of MANETs is simulation. The Network Simulator is a discrete event driven simulator. The goal of ns-2 is to support networking ,research, and education. In this paper we create a new Routing Protocol called My Router step by step in Ns-2.Then we evaluate its performance based on several parameters such as Packet Delivery Ratio , End to End Delay etc and compare it with MANET routing protocol OLSR .

Download Full-text

Evaluation of Physical Carrier Sense Based Backbone Maintenance in Mobile Ad Hoc Networks

International Journal of Vehicular Technology ◽

10.1155/2009/958056 ◽

2009 ◽

Vol 2009 ◽

pp. 1-13 ◽

Cited By ~ 1

Author(s):

Sapna Deval ◽

Luke Ritchie ◽

Martin Reisslein ◽

Andrea W. Richa

Keyword(s):

Ad Hoc Networks ◽

Parallel Algorithm ◽

Wireless Ad Hoc Networks ◽

Ad Hoc ◽

Dominating Set ◽

Discrete Event ◽

High Mobility ◽

Wide Range ◽

Carrier Sensing ◽

Hoc Networks

Physical carrier sensing has to date mainly been exploited for improving medium access control in wireless networks. Recently, a parallel algorithm striving to extensively exploit physical carrier sensing for constructing and maintaining a connected dominating set (CDS), which is also known as spanner, backbone, or overlay network in wireless ad hoc networks with interference ranges larger than transmission ranges has been proposed. Existing evaluations of this algorithm are limited to theoretical asymptotic bounds and simulations of static networks. In this paper, we evaluate the physical carrier sensing-based CDS maintenance for mobile ad hoc networks through discrete event simulations. For a wide range of node speeds and node densities, we evaluate the CDS characteristics and message exchanges required for maintaining the CDS. We find that the algorithm maintains a stable leader set dominating all nodes in the network for a wide range of mobility levels but struggles to maintain connectivity at high mobility levels. We also quantify the portions of the control messages for CDS maintenance that are exchanged through physical carrier sensing. We find that the parallel algorithm manages to greatly reduce the reliance on intact message receptions.

Download Full-text

A Software Architecture for Large Multi-simulation Experiments over Ad Hoc Networks Using NS-3 Discrete-Event Network Simulator

2014 European Modelling Symposium ◽

10.1109/ems.2014.71 ◽

2014 ◽

Cited By ~ 2

Author(s):

Anton Chistyakov

Keyword(s):

Ad Hoc Networks ◽

Software Architecture ◽

Ad Hoc ◽

Discrete Event ◽

Network Simulator ◽

Simulation Experiments ◽

Hoc Networks

Download Full-text

Design and analysis of routing protocol for cognitive radio ad hoc networks in Heterogeneous Environment

International Journal of Electrical and Computer Engineering (IJECE) ◽

10.11591/ijece.v9i1.pp341-351 ◽

2019 ◽

Vol 9 (1) ◽

pp. 341 ◽

Cited By ~ 1

Author(s):

Hassan Al-mahdi ◽

Yasser Fouad

Keyword(s):

Cognitive Radio ◽

Ad Hoc Networks ◽

Routing Protocol ◽

Ad Hoc ◽

Discrete Event ◽

Critical Issue ◽

Heterogeneous Environment ◽

Routing Metric ◽

Event Simulation ◽

Hoc Networks

Multi-hop routing protocol in cognitive radio mobile ad hoc networks (CRMANETs) is a critical issue. Furthermore, the routing metric used in multi-hop CRMANETs should reflect the bands availability, the links quality, the PU activities and quality of service (QoS) requirements of SUs. For the best of our knowledge, many of researchers investigated the performance of the different routing protocols in a homogeneous environment only. In this paper, we propose a heterogeneous cognitive radio routing protocol (HCR) operates in heterogeneous environment (i.e. the route from source to destination utilize the licensed and unlicensed spectrum bands). The proposed routing protocol is carefully developed to make a tradeoff between the channel diversity of the routing path along with the CRMANETs throughput. Using simulations, we discuss the performance of the proposed HCR routing protocol and compare it with the AODV routing protocol using a discrete-event simulation which we developed using JAVA platform.

Download Full-text