11-09-2012, 07:52 AM
Need inputs in each generation advancement on Technology ( from 1G to 4G)
Benifits of 3G & 4G
Regards,
Saravana
11-09-2012, 07:52 AM
Need inputs in each generation advancement on Technology ( from 1G to 4G) Benifits of 3G & 4G Regards, Saravana
11-09-2012, 02:08 PM
To get more information about the topic "4g technology" please visit the age
https://seminarproject.net/Thread-4g-technology--49148 https://seminarproject.net/Thread-4g-technology if you not get relevant information about 4g technology from there .. please reply here again with specific information request (with listing of sub titles and headings ) . so that we/generous users can help you on that
22-12-2012, 11:55 AM
4G TECHNOLOGY
4G TECHNOLOGY.pptx (Size: 290.51 KB / Downloads: 46) A BRIEF VIEW Generation refers change in nature of Service compatible transmission technology and new frequency bands. 1G systems used analog frequency modulation. 2G systems use digital communication techniques with TDM, FDM, CDMA. 3G systems offer higher data rates and voice and paging services to provide interactive multimedia including teleconferencing and internet access. 4G aims to provide IP telephony, ultra-broadband Internet access, gaming services. INTRODUCTION WHAT IS 4G ? 4G is the short name for fourth generation. The term 4G is used broadly to include several type of broadband wireless access communication not only cellular telephone system. 4G is the fourth generation of cellular wireless standards. It is based on packet switched network. The 4G network will consist of a set of various network using IP as a common protocol. This will allow users to: Select any system at any time and any where. Use multiple system at the same time. A wide range of application using only one 4g integrated terminal. OBJECTIVE OF 4G 4G being developed to accommodate QoS rate requirements set by further development of existing 3G applications. Flexible channel bandwidth between 5 and 20MHz, optionally up to 40MHz. Data rate of at list 100Mb/s between any two points in the world. Increase system spectral efficiency of up to 3bit/s/Hz/cell in the downlink and 2.25bit/s/Hz/cell for indoor usage. 1G CELLULAR COMMUNICATION 1G was analog system and was developed in 1970’s 1G had two major improvement, this was the invention of the microprocessor. Digital transform of control link between the phone and the cell site. It was based on FDMA, it allows users to make voice calls in one country. 2G CELLULAR COMMUNICATION 2G phones using global system for mobile communication ( GSM ) and was developed in 1990’s. GSM provides voice and limited data services and uses digital modulation for improved audio quality. It was based on CDMA. 3G CELLULAR COMMUNICATION The 3G technology adds multimedia facilities to 2G phones by allowing vedios, audio and graphic applications. Over 3G phones, we can watch streaming video or have video telephone. It support both packet switched and circuit swithed data transmission. Data rates upto 2mbps. WHAT’S NEW IN 4G ? High transfer rate. Ability to move around with the same IP address. Internet access any where. Utilization of smart antenna. High resolution mobile TV. 4G WIRELESS STANDARDS WiMAX formed to provide conformance and interoperability of the IEEE 802.16 standard. It aims to provide wireless data over long distance from point-to-point link to cellular mobile type access. WiBRO a part of IEEE 802.16e in process to provide collaborative and generic mobile WiMAX. 3GPP LTE a project aims to improve the mobile phone standard to cope with future requirements. 3GPP 2 UMB a project to improve the CDMA2000 mobile phone standard for next generation applications. WHAT IS OFDM ? OFDM stands for Orthogonal Frequency Division Multiplexing. It Transmits large amounts of digital data over a radio wave. HOW IT WORK :- It distributes the data over a large number of carriers that are spaced apart at precise frequencies. This spacing provides the "orthogonality" in this technique which prevents the demodulators from seeing frequencies other than their own. ULTRA WIDE BAND An advanced technology that can be used in 4G technology. It is typically detected as noise. It can use any part of the frequency spectrum, which means that it can use. frequencies that are currently in use by other radio frequency devices . It uses a frequency of 3.1 to 10.6 Hz. It uses less power, since it transmits pulse instead of continuous signal. Special antennas are needed to tune and aim the signal. SMART ANTENNA Smart antenna can be employed to find tune ,and turn up signal information. Smart antenna can send signal back in the same direction that they come from. Beam radio signal directly at a user to fallow the user as they move. Allow the same radio frequency to be used for other user without worry of interference. Can’t keep up transmission speeds while device is moving fast. i.e in a car IPV6.0 IPv6 means Internet Protocol Version 6 . The Internet Protocol (IP) is the method or protocol which data is sent from one computer to another on the internet. Each computer (known as a host) on the Internet has at least one IP that uniquely identifies it from all other computers on the Internet. It includes 128 bits, which is 4 times more than 32bits IP address in IPv4. SOFTWARE DEFINED RADIO A software defined radio is one that can be configured to any radio or frequency standard through the use of software. The phone should automatically switch from operating on a CDMA frequency to a TDMA frequency whenever it is required. Roaming can be an issue with different standards, but with a software defined radio, users can just download the interface upon entering new territory, or the software could just download automatically. APPLICATION Virtual presence : - 4g System gives mobile user’s a “virtual presence”(for example ,always on connection to keep people on event). Video conferencing. Virtual navigation:- A remote database contains the graphical representation of streets, building, and physical characteristics of a large metropolis. Block of this database are transmitted in rapid sequence to a vehicle. ADVANTAGE OF 4G Affordable communication services. High speed, high capacity and low cost per bit. Support for interactive multimedia, voice , streaming video, Internet and other broadband services. Global access, Service portability and scalable mobile services and variety of quality of services provided. Better spectral efficiency. seamless network of multiple protocol and air interfaces. CONCLUSION All totally the best way to help all users is to use 4G as the next wireless system and in totally it is safety and secure for public this the need that demand the solution. Today’s wired society is going wireless and it has problem, 4G is answer. Migration to 4G networks ensures convergence of networks, technologies, applications and services. Wireless carriers have an opportunity to shorten Investment return, improve operating efficiency and increase revenues. 4G - a promising Generation of wireless communication that will change people’s lives.
10-02-2015, 11:29 PM
send 4g technology synopsis
11-02-2015, 11:35 AM
To get full information or details of 4g technology please have a look on the pages
https://seminarproject.net/Thread-4g-tec...nar-report https://seminarproject.net/Thread-4g-wir...ull-report https://seminarproject.net/Thread-4g-tec...ort?page=2 https://seminarproject.net/Thread-4g-tec...ort?page=3 if you again feel trouble on 4g technology please reply in that page and ask specific fields in 4g technology |
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