نتایج جستجو برای: cross layer

تعداد نتایج: 759868  

Journal: :IJDSN 2012
Chunguang Shi Haitao Zhao Wang Shan Jibo Wei Linhua Zheng

Cooperative communication has been recently proposed as a way to mitigate fading in wireless networks. A cross-layer adaptive cooperative MAC (CAC-MAC) protocol for IEEE 802.11 DCF-based wireless ad hoc networks is proposed. The novel aspect and core idea of our proposal is a cross-layer adaptive data transmission algorithm considering both the length of data frame at the MAC layer and instanta...

2005
Xiao Qin Chen Dhammika Jayalath Haley Jones

In this paper, we propose a novel cross-layer design for mobile-to-mobile ad hoc networks. Our scheme makes use of the statistical characteristics of the fast fading channel and cross-layer concept to combat Rayleigh fast fading and improve radio channel utilization. A linear minimum mean square error (LMMSE) estimator employs past channel autocorrelation data to estimate the future fading stat...

2017
V.Venkata Rao P.Chandrasekhar Reddy

The improvement of communication throughput using a cross layer mode of communication is proposed. Due to critical mode of applications of sensor networks, it is required to achieve data at faster rate for high refreshment. As the communicating data’s are sensed or measured data, it is required to have higherthroughput and less interference, to achieve accuracy and optimal resource utilization....

2006
Hing Lam

This paper investigates a cross layer scheduling scheme for OFDMA wireless system with heterogeneous delay requirements. Unlike most existing cross layer designs which take a decoupling approach, our design considers both queueing theory and information theory in modeling the system dynamics. The cross layer design is formulated as an optimization of total system throughput, subject to individu...

2014
V. Swathy R. Savitha

Since the Wireless Sensor Networks (WSN) use battery powered, the system design at all level emphasizes energy-efficiency. Sensor with cross-layer design improves the network in terms of energy utilization.Cross-layer approach blends common protocol layerfunctionalities into a single module. However, most of the cross-layered based solutions have a limited scope or give only the analytical resu...

2014
C. ANBU ANANTH K. SELVAKUMAR

In wireless mesh network, there is a need of efficient Cross-Layer Design Architecture for Routing and Channel Selection in Multi-Radio Multi-Channel Wireless Mesh Networks. For this we propose interference and congestion aware cross-layer architecture for wireless mesh networks. The proposed technique first we apply Cross-Layer QoS-Aware Routing Protocol, in which we use bandwidth estimation f...

2006
Changsu Suh Young-Bae Ko Dong-Min Son

In the area of wireless sensor networks, achieving minimum energy consumption is a very important research issue. A number of energy efficient protocols have been proposed, mostly based on a layered design approach, which means that they are focused on designing optimal strategies for “single” layer only. In this paper, we take an alternative approach i.e., a cross-layer design, and present a n...

2009
Yasamin Mostofi Richard M. Murray R. M. MURRAY

In this paper we consider estimation of dynamical systems over wireless fading communication channels using a Kalman filter. We show the impact of the stochastic communication noise on the estimation process. We furthermore show how noisy packets should be handled in the receiver. More specifically, we illustrate the impact of the availability of a cross-layer information path on the optimum re...

Journal: :IEICE Transactions 2014
Wei Feng Suili Feng Yuehua Ding Yongzhong Zhang

The rapid variation of wireless channels and feedback delay make the available channel state information (CSI) outdated in dynamic wireless multi-hop networks, which significantly degrades the accuracy of cross-layer resource allocation. To deal with this problem, a cross-layer resource allocation scheme is proposed for wireless multi-hop networks by taking the outdated CSI into account and bas...

Journal: :EURASIP J. Wireless Comm. and Networking 2007
Luigi Iannone Konstantin Kabassanov Serge Fdida

Real deployments of wireless multi-hop networks, by Internet Service Providers (ISP), have been slowed down by their poor performance and unreliability. The research community has already proved that efficient cross-layer routing, in particular rate-aware routing, can significantly improve performances. Nevertheless, this work has been done mainly by simulations, seldom being implemented in a r...

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