cont

will continue it frnds could not update i bit busy with my projects

cont....

current wireless systems like 3G fit every well in this picture but only as one constituent part. Present systems cannot by themselves offer enough network capacity link capabilities and coverage for supporting a vision of highly connected world fully exploiting broadband communications. Moreover the bandwidth required for that purpose is far beyond the figures in use today and hence a new spectrum allocation is necessary .the vision of highly connected world where virtually every entry can communicate to each other in any possible situation anytime exploiting broadband capabilities is truly appealing and equally important fits every well in the aforementioned logical chain

visions and foresights about 4G

here lets us first discuss about the vision on ITU(International Telecommunication Union) of future wireless communication systems considers as our base line, finally in an attempt to foresee 4G,we present our own views ,in addition to the user trends previously discussed ,other important developments and trends could help us to better approach ,define and justify future 4G networks ,trends in various categories support the argument of an explosive increase in the demand of band width required to realize a truly wireless knowledge society.. will cont..

now let us know something about 4G

now you got a idea what a 4G is now we shall about 4G technically

4G is defined as a network that is spectrum efficient ans that can provide high speed services over air ans offer seamless interoperability,roaming ans real content .it is always on technologically transparent ans affordable with reasonable Q0S and hi

4G is an "ultra high speed wireless network" an information superhighway without cable.
the new network will enable wireless three-dimensional augmented ans virtual reality connection between phone users

4G is "wireless ad hoc peer- to peer networking"

then main defintion of 4G that ITU-R approved in June 2003 sates that the data rate should be around 100Mbps when moving fast (like in a train ) ans 1Gbps when not moving

sounds interesting naa soooo


Lets us proudly welcome the 4G technology for the benefit of human kind

now think about the speed in 4G

4G is defined as telephony at a data rates of 100Mbps globally that is bertween any two points in the world .locally ,1Gbps will be possible

which would be the dream of many people now that the dream is being implemented

about 4G

for the 4G way of communication we need to think out of box

unlike 3G ,which refers to a specific mobile standard and allows the transfer of data at minimum accepted speed ,4G or fourth generation of wireless communication refers to collection of technologies ans standards that will find their way in to range of new ubiquitous computing ans connection systems .in its early stages

4G offers teh promise of allowing users to connect to teh internet and one another thorugh a varity of device asn standards anytime , anywhere and at wide range of speeds, from narrow band to broad band

how is 4G implemented

until now we know that we get more data rate in 4G but how we can we can get by using a special type of communication ie MIMO multiple input and multiple output , we make some changes in base stations and we can implement MIMO its the most efficient way to transfer the data when we need more data rate

sooo..... MIMO is invention made after few inventions it not new soo wat are the old inventions we got which gave rise to a revolution way of communication
think it ............................