Maximum Clique Approach in Network Coding Based Multicast Broadcast Services

2013 ◽  
Vol 446-447 ◽  
pp. 1577-1580
Author(s):  
Li Feng Jiang ◽  
Liang Gou ◽  
Hong Peng Zhu ◽  
Geng Xin Zhang
Keyword(s):  
Energy Efficiency ◽  
Network Coding ◽  
Design Parameter ◽  
Figure Of Merit ◽  
Maximum Clique ◽  
Transmission Efficiency ◽  
Substantial Improvement ◽  
Satellite Broadcasting ◽  
Packet Retransmission ◽  
Important Design

Network coding has recently attracted attention as a substantial improvement to packet retransmission schemes in wireless multicast broadcast services (MBS). In this paper, we are interested in applying the maximum clique approach to the network coding based multicast retransmission problem in the MBS systems. Our figure of merit is the transmission efficiency which is an important design parameter for some MBS systems, such as the satellite broadcasting networks since it affects the energy efficiency and delay of the system directly. We show that introducing the idea from network coding allows us to realize significant benefits in terms of transmission efficiency for the problem of multicasting and broadcasting, and develop an algorithm that allow to realize these benefits in practice.

Mobile Platform Challenges in Interactive Computer Vision

2017 ◽  
pp. 47-73
Author(s):  
Miguel Bordallo López
Keyword(s):  
Computer Vision ◽  
Energy Efficiency ◽  
User Interfaces ◽  
High Performance ◽  
Heterogeneous Computing ◽  
Low Power Consumption ◽  
Mobile Environment ◽  
Trade Off ◽  
And Performance ◽  
Important Design

Computer vision can be used to increase the interactivity of existing and new camera-based applications. It can be used to build novel interaction methods and user interfaces. The computing and sensing needs of this kind of applications require a careful balance between quality and performance, a practical trade-off. This chapter shows the importance of using all the available resources to hide application latency and maximize computational throughput. The experience gained during the developing of interactive applications is utilized to characterize the constraints imposed by the mobile environment, discussing the most important design goals: high performance and low power consumption. In addition, this chapter discusses the use of heterogeneous computing via asymmetric multiprocessing to improve the throughput and energy efficiency of interactive vision-based applications.

Effect of excitation voltage on bias temperature coefficient of MEMS sandwich accelerometer

2019 ◽  
Vol 33 (12) ◽  
pp. 1950112 ◽  
Author(s):  
Xianshan Dong ◽  
Qinwen Huang ◽  
Junhua Zhu ◽  
Wei Xu ◽  
Ping Lai
Keyword(s):  
Temperature Coefficient ◽  
Design Parameter ◽  
Closed Loop ◽  
Excitation Voltage ◽  
Temperature Drift ◽  
Mems Accelerometer ◽  
Bias Drift ◽  
Performance Indexes ◽  
Sensor Structure ◽  
Important Design

In MEMS closed-loop accelerometer, excitation voltage is an important design parameter that is related to many performance indexes, and the bias temperature coefficient is a key point for MEMS accelerometer. But the effect of excitation voltage on bias temperature coefficient is not clear and their relation has not yet been established. This paper studies the effect of excitation voltage on bias temperature coefficient of MEMS sandwich accelerometer. The mechanism of their relation is point out, and experiments of bias temperature drift with different excitation voltages are carried out. The measured results show that the excitation voltage influences the bias temperature coefficient of MEMS sandwich accelerometer greatly, and the frame of sensor structure is the main source of bias temperature drift in MEMS sandwich accelerometer. This paper is also helpful for researchers to further understand the source of bias drift in MEMS sandwich accelerometer and make corresponding improvement.

scholarly journals The Exploration of Network Coding in IEEE 802.15.4 Networks

2011 ◽  
Vol 2011 ◽  
pp. 1-9 ◽  
Author(s):  
Deze Zeng ◽  
Song Guo ◽  
Victor Leung ◽  
Jiankun Hu
Keyword(s):  
Energy Efficiency ◽  
Network Coding ◽  
Ieee 802.15.4 ◽  
Low Complexity ◽  
Personal Area Networks ◽  
Wireless Personal Area Networks ◽  
Home Office ◽  
Improve Energy Efficiency ◽  
Energy Constrained ◽  
Time Critical

Wireless personal area networks (WPANs) are getting popular in a variety of fields such as smart home, office automation, and e-healthcare. In WPANs, most devices are considerably energy constrained, so the communication protocol should be energy efficient. The IEEE 802.15.4 is designed as a standard protocol for low power, low data rate, low complexity, and short range connections in WPANs. The standard supports allocating several numbers of collision-free guarantee time slots (GTSs) within a superframe for some time-critical transmissions. Recently, COPE was proposed as a promising network coding architecture to essentially improve the throughput of wireless networks. In this paper, we exploit the network coding technique at coordinators to improve energy efficiency of the WPAN. Some related practical issues, such as GTS allocation and multicast, are also discussed in order to exploit the network coding opportunities efficiently. Since the coding opportunities are mostly exploited, our proposal achieves both higher energy efficiency and throughput performance than the original IEEE 802.15.4.

Network Coding Based Schemes for Imperfect Wireless Packet Retransmission Problems: A Divide and Conquer Approach

2010 ◽  
Vol 62 (4) ◽  
pp. 937-958 ◽  
Author(s):  
Zhenguo Gao ◽  
Mei Yang ◽  
Jianping Wang ◽  
Klara Nahrstedt ◽  
Shaobin Cai ◽  
...  
Keyword(s):  
Network Coding ◽  
Divide And Conquer ◽  
Packet Retransmission ◽  
Wireless Packet

scholarly journals Random network coding-based optimal scheme for perfect wireless packet retransmission problems

2011 ◽  
Vol 13 (6) ◽  
pp. 577-592 ◽  
Author(s):  
Zhenguo Gao ◽  
Weidong Xiang ◽  
Yunlong Zhao ◽  
Jing Zhao ◽  
Shaobin Cai ◽  
...  
Keyword(s):  
Network Coding ◽  
Random Network ◽  
Random Network Coding ◽  
Optimal Scheme ◽  
Packet Retransmission ◽  
Wireless Packet
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