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TCP-Aware Channel Allocation in CDMA Networks-IEE Jan. 2009

Abstract

explores the use of rate adaptation in cellular networks to maximize throughput long-lived TCP sessions. We focus on the problem of maximizing the throughput of TCP connections and propose a joint optimization of MAC and physical layer parameters with respect to TCP sending rate. In particular, propose a simple TCP-aware channel scheduler that adapts the wireless channel rate to changes in the TCP sending rate and explore its performance for both single and multiple con ....etc

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MOBILE COMMUNICATION 3G CDMA

ABSTRACT

Cellular technology
Developed by Quamcomm
Originally known as IS-95
Competes with GSM
CDMAONE,CDMA2000
Variants 1XEV,1XEV-DO,MC3X

INTRODUCTION

What is CDMA
Multiple Access Comparison
FDMA - Frequency Division Multiple Access
TDMA - Time Division Multiple Access
CDMA - Code Division Multiple Access

BENEFITS Of CDMA
Cdma capacity increases
Improved call quality
Simplified system planning
Enhanced privacy
Improved coverage
....etc

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The Internet and Mobile Wireless are the defining technologies of our times. Today, they are converging and promising to dramatically reshape society. Mobile Internet services will help people work, entertain, and communicate anytime, anywhere-using a variety of devices such as cell phones, Personal Digital Assistants (PDAs), and laptops. Driven by the Wireless Internet?s enormous potential and reacting to declining Mobile voice revenues per subscriber, operators are pegging their future growth on Wireless Internet services.

While operators ....etc

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Distributed Medium Access control for Next Generation CDMA Wireless Networks


Generic Distributed Network Model
we focus on a generic network model where a number of wireless mobile nodes are organized in a flat fashion, communicating with each other via one-hop or multiple-hop connections without any central control. Connections to outside correspondence nodes are supported through a gateway (e.g., in the wireless backbone) or an access point (e.g.,in ad hoc networks or WPAN).
In the past decade, code-divi ....etc

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This article is presented by:
Malathy Elumalai
Advance topics in Communication
Spring 2010

COMPARISON OF CDMA AND TDMA SYSTEMS
ABSTRACT
In this report two candidates for high capacity cellular systems are simulated and analyzed, one CDMA and one TDMA system. Simulations of the CDMA example indicate a high sensitivity to variations in certain system parameters. The TDMA example is a GSM system using rand ....etc

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ABSTRACT
Machine health monitoring is of critical importance to its safe and reliable operation. The emergence of wireless data transmission techniques has extended the Scope of health monitoring to machine components and systems that are difficult to accessor not suited for wired sensor data acquisition .this paper presents the design and prototype realization of a digital wireless data transmitter based on the CDMA technique.
The design provides a generic solution for various applications ....etc

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Near-Optimal Multiuser Detection in Synchronous CDMA Using Probabilistic Data Association
Presented By:
J. Luo, Student Member, IEE, K. R. Pattipati, Fellow, IEE, P. K. Willett, Senior Member, IEE, and F. Hasegawa, Member, IEE
Abstract
A Probabilistic Data Association (PDA) method is proposed in this letter for multiuser detection over synchronous code-division multiple-access (CDMA) communication channels. PDA models the undecided user signals as binary random variables. By approximating the inter-user interference (IU ....etc

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micro controller (at89s52) based speed limiter with auto breaking system full report
micro controller (at89s52) based speed limiter with auto breaking system full report

micro controller (at89s52) based speed limiter with auto breaking system full report
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