Dynamically Reconfigurable NoC for Future Heterogeneous Multi-core Architectures

2010 ◽  
pp. 256-276
Author(s):  
Balal Ahmad ◽  
Ali Ahmadinia ◽  
Tughrul Arslan
Keyword(s):  
Network Interface ◽  
Packet Size ◽  
Network Delay ◽  
Data Intensive ◽  
Dynamically Reconfigurable ◽  
High Data ◽  
Communication Framework ◽  
Data Throughput ◽  
Channel Bandwidth ◽  
Simulation Results

To increase the efficiency of NoCs and to efficiently utilize the available hardware resources, a novel dynamically reconfigurable NoC (drNoC) is proposed in this chapter. Exploiting the notion of hardware reconfigurability, the proposed drNoC reconfigures itself in terms of switching, routing and packet size with the changing communication requirements of the system at run time, thus utilizing the maximum available channel bandwidth. In order to increase the applicability of drNoC, the network interface is designed to support OCP socket standard. This makes drNoC a highly re-useable communication framework, qualifying it as a communication centric platform for high data intensive SoC architectures. Simulation results show a 32% increase in data throughput and 22-35% decrease in network delay when compared with a traditional NoC with fixed parameters.

Improved AODV Routing Protocol Based on SNR

2014 ◽  
Vol 610 ◽  
pp. 910-914
Author(s):  
Bin Wang ◽  
Hao Meng ◽  
Shen Yong Li
Keyword(s):  
Routing Protocol ◽  
Data Transmission ◽  
Transmission Rate ◽  
Transmission Efficiency ◽  
Network Delay ◽  
Paper Briefly ◽  
Low Snr ◽  
Data Throughput ◽  
Simulation Results ◽  
Aodv Routing Protocol

This paper briefly analyses the routing establishing process of AODV and points out its imperfection, proposes the AODV routing establishing principle based on SNR. The Network delay and data throughput of the improved AODV have all been improved as simulation results proves. Finally the conclusion was given, illustrating that the improvement avoids the bad influence to the transmission rate of the whole link, which brings by low SNR node, and increases the data transmission efficiency.

scholarly journals Efficient OFDM transceiver design for VLC sys-tems in fading channel

2018 ◽  
Vol 7 (1.8) ◽  
pp. 245
Author(s):  
Jayakumari J ◽  
Rakhi K J
Keyword(s):  
Fading Channels ◽  
Bit Error Rate ◽  
Fading Channel ◽  
Visible Light Communication ◽  
Communication Security ◽  
Rf Systems ◽  
High Data ◽  
Data Rates ◽  
Simulation Results ◽  
Rich Spectrum

With the widespread effective usage of LEDs the visible light communication (VLC) system has brought out an increasing interest in the field of wireless communication recently. VLC is envisioned to be an appealing substitute to RF systems because of the advantages of LEDs such as high communication security, rich spectrum, etc. For achieving bearable inter symbol interference (ISI) and high data rates, OFDM can be employed in VLC. In this paper, the performance of VLC system with popular unipolar versions of OFDM viz. Flip-OFDM and ACO-OFDM is analyzed in fading channels. From the simulation results it is seen that the Flip-OFDM-VLC system outperforms the ACO-OFDM-VLC system in terms of bit error rate and is well suited for future 5G applications.

Improving Energy Efficiency and Throughput in Heterogeneous Mobile Ad Hoc Networks

2011 ◽  
pp. 37-49
Author(s):  
Manu J. Pillai ◽  
M. P. Sebastian
Keyword(s):  
Ad Hoc ◽  
Transmission Rate ◽  
Mac Protocol ◽  
Signal Loss ◽  
High Data ◽  
Communication Links ◽  
Adhoc Networks ◽  
Simulation Results ◽  
Demand Routing ◽  
Hoc Networks

The nodes are expected to transmit at different power levels in heterogeneous mobile adhoc networks, thus leading to communication links of different length. Conventional MAC protocols that unconditionally presume that links are bi-directional and with unvarying energy distribution may not succeed or execute badly under such circumstances. Interference and signal loss resulting out of distance and fading diminish the entire throughput attained in heterogeneous networks to a greater extent. This article presents a MAC protocol, which adaptively transmits data frames using either the energy efficient nodes or a list of high data rate assistant nodes. In addition, a cross-layer based energy level on-demand routing protocol that adaptively regulates the transmission rate on basis of congestion is projected as well. Simulation results illustrate that the proposed protocols considerably diminish energy consumption and delay, and attain high throughput in contrast with the Hybrid MAC and traditional IEEE 802.11 protocols

IBCube

2018 ◽  
Vol 15 (1) ◽  
pp. 27-46
Author(s):  
Qiong Hu ◽  
Hanhua Chen ◽  
Hai Jin ◽  
Chen Tian ◽  
Aobing Sun ◽  
...  
Keyword(s):  
Low Cost ◽  
Packet Delay ◽  
Building Blocks ◽  
Network Interface ◽  
Allocation Scheme ◽  
The Past ◽  
Datacenter Networks ◽  
Construction Scheme ◽  
Economical Design ◽  
Simulation Results

Datacenter networks have attracted a lot of research interest in the past few years. BCube is proved to be a promising scheme due to its low cost. By using a recursive construction scheme, BCube can exponentially scale a datacenter. Industry experiences, however, articulate the importance of incremental expansion of datacenter. In this article, the authors show that BCube's expanding scheme suffers low utilization of switch ports. They propose IBCube, a novel economical design for incrementally building datacenter networks. The insight is that: by letting the number of switches in each BCube layer equal the number of the building blocks, the authors can enable the switch ports to be fully utilized to support the total number of network interface cards of the deployed servers in the datacenters. Accordingly, their IBCube designs a novel automatic port allocation scheme. Simulation results show that the IBCube design reduces the budget for the datacenter networks by 94% as well as improves the packet delay and throughput by 10.3% and 11.5%, respectively, compared to the previous partial BCube design.

scholarly journals Robustness and Stability Analysis of a Predictive PI Controller in WirelessHART Network Characterised by Stochastic Delay

2017 ◽  
Vol 7 (5) ◽  
pp. 2605 ◽  
Author(s):  
Sabo Miya Hassan ◽  
Rosdiazli Ibrahim ◽  
Nordin Saad ◽  
Vijanth Sagayan Asirvadam ◽  
Kishore Bingi ◽  
...  
Keyword(s):  
Closed Loop ◽  
Pi Controller ◽  
Sensitivity Function ◽  
Stochastic Network ◽  
Uncertainty Modelling ◽  
Network Delay ◽  
Stochastic Delay ◽  
Simultaneous Process ◽  
Simulation Results ◽  
Delay Variations

As control over wireless network in the industry is receives increasing attention, its application comes with challenges such as stochastic network delay. The PIDs are ill equipped to handle such challenges while the model based controllers are complex. A settlement between the two is the PPI controller. However, there is no certainty on its ability to preserve closed loop stability under such challenges. While classical robustness measures do not require extensive uncertainty modelling, they do not guarantee stability under simultaneous process and network delay variations. On the other hand, the model uncertainty measures tend to be conservative. Thus, this work uses extended complementary sensitivity function method which handles simultaneously those challenges. Simulation results shows that the PPI controller can guarantee stability even under model and delay uncertainties.

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