3G USB DATA CARD

Acknowledgement
Exchange of ideas generate a new object to work in a better way .Apart from the ability, labor and time devotion, guidance and co-operation are the two pillars for success of seminars. Whenever a person in helped and co-operated by others, his/her heart is bound to pay gratitude to them.
I am heartily thankful to the Authority of my college and Electronics & Telecommunication Engineering Department for permitting me to undergo this useful and interesting seminar on the topic of “3G USB DATA CARD” .This topic mainly deals with new technology boost on our life through Internet and Connectivity On the move, and its future aspects.
I am grateful to my Electronics and Telecommunication Engineering H.O.D. Er. S.K DASH And seminar guide Er. S.L MOHAPATRA, who had given valuable guidance throughout the study of this topic. They not only supervised and guided the work but also were instrumental in creating an urge and insight necessary for this seminars.
ABSTRACT
The article presents an application & specifications of 3G USB DATA CARDS .The application is utilizing in our laptops & desktop for fast internet surfing. The various types of data card modems and their availability are discussed in the report briefly.
In the report the advantages and some disadvantages are explained with its features and various physical and technical specifications with suitable images and charts.
Some references are taken from various sources as the concept is very new and popular but the terminology related with it is very unfamiliar to many of us. INTRODUCTION
3G USB DATA CARD is a terminal available for high-speed wireless network access, with which the users can access the Internet in the wireless way at home, office, outdoor sites and so on… on the go.
A 3G USB DATA CARD
Whether abroad on business or on holiday, with the USB modem for laptops in your wallet you can stay in touch with family or contact your business associates whenever you need to, because keeping in touch with people can be fun or in some cases vital.
These innovative little devices have become an affordable and extremely useful addition to the laptop. In certain situations this kind of modem is better than mobile phone in sending out complex messages.
HOW IT WORKS?
The USB DATA CARD works on the principle of a typical HSDPA CONNECTOR.
The key idea of the HSDPA concept is to increase packet data throughput with methods known already from Global System for Mobile Communication. The modulation is based on 16 QAM constellation, the different bits mapped to the 16 QAM symbols have different reliability.
The key idea of the 3G USB DATA CARD is based on HSDPA concept to increase packet data throughput with methods Known already from Global System for Mobile Communications (GSM)/Enhanced data rates for global evolution (EDGE) standards, including page link adaptation and fast physical layer (L1) retransmission combining the physical layer retransmission handling has been discussed earlier but the inherent large delays of the existing Radio Network Controller (RNC)-based Automatic Repeat request ARQ architecture would result in unrealistic Amounts of memory on the terminal side. Thus, architectural changes are needed to arrive at feasible memory requirements as well as to bring the control for page link adaptation closer to the air interface. The transport channel carrying the user data with HSDPA operation is denoted as the High-speed Downlink-shared Channel (HS-DSCH).