Evaluation of the Transmission Efficiency of Multi-frequency Signals with an Unknown Initial Phase in the Meteor Burst Communication System

2011 ◽

Vol 110-116 ◽

pp. 4123-4127

Author(s):

Jing Sun ◽

Dong Guang Li ◽

Xue Jun Cui

Keyword(s):

Light Beam ◽

Atmospheric Turbulence ◽

Communication System ◽

Laser Light ◽

Transmission Efficiency ◽

Laser Communication ◽

Atmospheric Attenuation ◽

Channel Effects ◽

Bad Weather ◽

Atmospheric Channel

Laser light beam transmit efficiency and accuracy in atmosphere channel is important parts in space laser communication system. The atmosphere channel effects to laser light beam mainly have two aspects, atmospheric attenuation and atmospheric turbulence. After doing related experiments, we figure that the speed of wind has little effect to atmospheric turbulence and the altitude is portional to structure parameter. And bad weather has much influence with energy transmission efficiency. In practical situation, we should consider two ways working at the same time refer to our conclusions.

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Research of SIP Signaling Delay in IP Multimedia Subsystem

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.644-650.4387 ◽

2014 ◽

Vol 644-650 ◽

pp. 4387-4390 ◽

Cited By ~ 1

Author(s):

Xiang Yu ◽

Xiao Ning Zhang

Keyword(s):

Communication System ◽

Transmission Efficiency ◽

Ip Multimedia Subsystem ◽

Radio Communication ◽

Compression Algorithms ◽

Factors Affecting ◽

Signaling Protocol ◽

Important Index ◽

Radio Communication System ◽

Session Setup

Optimizing the transmission efficiency of data is becoming an indispensable job in voice radio communication system. IP Multimedia Subsystem (IMS) standardized Session Initiation Protocol (SIP), which categorize as a signaling protocol for management and maintenance of new multimedia IP-based services. Session setup delay is one of important index of it. In order to reduce SIP signaling delay, to begin with, we analyze and study the factors affecting the session setup delay from different points, and solve the problems in good ways. In the end of the article, we contrast five compression algorithms of SIP signaling.

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Recent Research on Multi Input Multi Output (MIMO) based Mobile ad hoc Network

International Journal of Service Science Management Engineering and Technology ◽

10.4018/ijssmet.2014070104 ◽

2014 ◽

Vol 5 (3) ◽

pp. 54-65 ◽

Cited By ~ 9

Author(s):

Swati Chowdhuri ◽

Sayan Chakraborty ◽

Nilanjan Dey ◽

Ahmad Taher Azar ◽

Mohammed Abdel-Megeed M. Salem ◽

...

Keyword(s):

Communication System ◽

Ad Hoc Network ◽

Ad Hoc ◽

Mobile Ad Hoc Network ◽

Transmission Efficiency ◽

Spatial Multiplexing ◽

Mimo Channel ◽

Mimo Communication ◽

Mobile Ad Hoc ◽

Hoc Networks

Mobile ad hoc Network (MANET) and Multi Input Multi Output (MIMO) communication are emerging techniques in modern communication system. MIMO and MANET have various applications in the wireless communication system. This paper presents a survey on recent advancement of MIMO implemented mobile ad hoc network. A review of more than 40 papers on MIMO communication based mobile ad hoc network and most of the related topics is presented in this work. This paper shows the significant contribution in the field of MIMO communication and mobile ad hoc network. Previous works in this domain can be categorized into four major areas: (a) Mathematical modeling of MIMO channel and Ad hoc networks, (b) Physical Scattering Model of MIMO channel considering fading (c) Spatial multiplexing (OFDM) technique with MIMO channel, (d) Analysis of transmission efficiency of packet radio network. The review paper establishes the advancement in these four areas as well as recent changes in advance communication and networking environments.

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AAC Decision-Making and Mobile Technology: Points to Ponder

Perspectives on Augmentative and Alternative Communication ◽

10.1044/aac23.2.104 ◽

2014 ◽

Vol 23 (2) ◽

pp. 104-111 ◽

Cited By ~ 6

Author(s):

Mary Ann Abbott ◽

Debby McBride

Keyword(s):

Decision Making ◽

Mobile Technology ◽

Communication System ◽

Augmentative And Alternative Communication ◽

Evaluation Process ◽

Decision Making Process ◽

Alternative Communication ◽

Ipod Touch ◽

Feature Match

The purpose of this article is to outline a decision-making process and highlight which portions of the augmentative and alternative communication (AAC) evaluation process deserve special attention when deciding which features are required for a communication system in order to provide optimal benefit for the user. The clinician then will be able to use a feature-match approach as part of the decision-making process to determine whether mobile technology or a dedicated device is the best choice for communication. The term mobile technology will be used to describe off-the-shelf, commercially available, tablet-style devices like an iPhone®, iPod Touch®, iPad®, and Android® or Windows® tablet.

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A Community Based High Risk Register for Hearing Loss

Journal of Speech and Hearing Disorders ◽

10.1044/jshd.4704.373 ◽

1982 ◽

Vol 47 (4) ◽

pp. 373-375 ◽

Cited By ~ 2

Author(s):

James L. Fitch ◽

Thomas F. Williams ◽

Josephine E. Etienne

Keyword(s):

Hearing Loss ◽

System Identification ◽

High Risk ◽

Language Learning ◽

Education Program ◽

Communication System ◽

Auditory Signal ◽

Early Age ◽

Community Based ◽

Children With Hearing Loss

The critical need to identify children with hearing loss and provide treatment at the earliest possible age has become increasingly apparent in recent years (Northern & Downs, 1978). Reduction of the auditory signal during the critical language-learning period can severely limit the child's potential for developing a complete, effective communication system. Identification and treatment of children having handicapping conditions at an early age has gained impetus through the Handicapped Children's Early Education Program (HCEEP) projects funded by the Bureau of Education for the Handicapped (BEH).

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