laser broadband from nasa seminar abstract

Abstract
Lasers have been considered for space communications since their realization in 1960. Specific advancements were needed in component performance and system engineering particularly for space qualified hardware.

Advances in system architecture, data formatting and component technology over the past three decades have made laser communications in space not only viable but also an attractive approach into inter satellite page link applications.

Information transfer is driving the requirements ....etc

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Analog-Digital Hybrid Modulation for improved efficiency over Broadband Wireless Systems
Abstract This paper seeks to present ways to eliminate the inherent quantization noise component in digital communications, instead of conventionally making
it minimal. It deals with a new concept of signaling called the Signal Code Modulation (SCM) Technique. The primary analog signal is represented by: a sample
which is quantized and encoded digitally, and an analog component, which is a function of the quantization component ....etc

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can plz anyone help me with my topic wibro.. the report aswell as semniar too:s:idea:
plz can u also give more info abt it..like the basic info ....etc

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This article is presented by:S.RAMANATHAN
G.SARAVANAN

ABSTRACT


A wireless revolution is seeping into our daily lives never before. Sooner or later we are all going to go wireless. Broadband Wireless Access has occupied a niche in the market for about a decade. The recently developed Blue tooth wireless technology is a low power, short-range technology for ad hoc cable replacement and it enables people to wirelessly combine devices wherever they bring them. Due to the s ....etc

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WiMAX for Broadband Wireless Access
Presented By:
Karim M. El Defrawy
ICS
UCI-2005
Outline
What is WiMAX
802.16 Introduction
802.16 MAC Highlights
802.16 Reference Model
MAC Convergence Sub-Layer (CS)
MAC Common Part Sub-Layer (CPS)
MAC Privacy Sub-Layer (PS)
Questions
What is WiMAX?
Worldwide Interoperability for Microwave Access (WiMAX) is the common name associated to the IEE 802.16a/REVd/e

standards.

These standards are issued by the IEE 802.16 subgroup that originally covered the Wireless Local Loop technologi ....etc

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WiBro (Wireless Broadband) is a wireless broadband Internet technology developed by the South Korean telecoms industry. WiBro is the South Korean service name for IEE 802.16e (mobile WiMAX) international standard. WiBro adopts TDD for duplexing, OFDMA for multiple access and 8.75 MHz as a channel bandwidth. It was designed to overcome the data rate limitation of mobile phones (for example CDMA 1x) and to add mobility to broadband Internet access. 100 MHz of electromagnetic spectrum in the 2.3 - 2.4 GHz band was allocated by the korean govt. WiB ....etc

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WIBRO

ABSTRACT
Designed and integrated by the Korean telecom industry as an answer to the drawbacks of speed curbs in the likes of CDMA 1x mobile phones and to increase the flow rate of broadband Internet like the ADSL or Wireless LAN, the technology uses TDD for duplexing, OFDMA for multiple access and 8.75MHz as a channel bandwidth.
As the wibro base stations, provides a dataflow rate of 30 to 50 Mbit/s and also allow the usage of portable interne ....etc

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Wi-MAX (Worldwide Interoperability for Microwave Access)

Paper presented by
R.V.Satyanarayana.B
Dept.of Electronics and Communication eng,
V.R.Siddhartha College of Engineering,
Kanuru, Vijayawada-520007

ABSTRACT:

The two driving forces of modern Internet are broadband, and wireless. The WiMax standard combines the two, delivering high-speed broadband Internet access over a wireless connection. The main problems with broadband access are that it is pretty ....etc

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Broadband Wireless:The New Era in Communications



Abstract
There s no doubt the world is going wireless faster and more broadly than anyone might have expected. In
this visionary paper, Intel demonstrates this new reality and predicts that billions of people will gain high-speed
Internet access wirelessly within the next decade.
The premise for this vision is clear: all high-speed wireless technologies (3G, Wi-Fi*, WiMAX and Ultra-
Wideband) will coexist, working in tande ....etc

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Wireless Broadband Service (MTS MBlaze)



A BRIEF HISTORY ABOUT MTS

MTS India (formally known as Sistema Shyam TeleServices Limited), referred to simply as MTS, is an Indian telecom service provider. Shyam holds the Unified Service Access License for the Rajasthan circle and operates Basic telephony, mobile telephony, (CDMA) and broadband services in the province. Shyam Telelink is the end-to-end service provider in Rajasthan with more than 269,000 subscribers as on August 2008 a ....etc

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