GSM 1800 1. Mobile to BTS (uplink): 1710-1785 MHz 2. BTS to Mobile (downlink) 1805-1880 MHz 3. Bandwidth: 2* 75 MHz GSM Specification-II 1. Carrier Separation : 200 KHz 2. Duplex Distance : 45 MHz 3. No. of RF carriers : 124 4. Access Method : TDMA/FDMA 5. Modulation Method: GMSK 6. Modulation data rate: 270.833 Kbps ADVANTAGES OF GSM: 1. GSM uses radio frequencies
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4G EVOLUTION Abstract : 4G is the fourth generation standard of the mobile communication technology‚ and it is the successor of Tri-band 3G telecommunication networks. 4G is widely used in multimedia applications involving cloud computing‚ high definition mobile TV‚ video conferencing‚ IP telephony and all others which include the high quality streaming of a combination of data‚ audio‚ visual‚ text and other interactivity. The objective of this paper is to explore the evolution of 4G‚ its
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zzz1. The Physical Layer of the OSI model is responsible for: a) establishing‚ maintaining and terminating connections across the intervening network b) reliable transfer of information across the physical link c) data units are delivered error free‚ in sequence‚ with no losses or duplications d) all of the above e) none of the above 2. An example of an application layer protocol is a) HTTP c) UDP e) None of the above b) HDLC d) TCP 3.Techniques for transmitting a digital signal over an
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EE314: CMOS RF Integrated Circuit Design Introduction to Wireless Communication systems Stanford University Hamid Rategh Hamid Rategh Stanford University EE314 HO#1 1 Course Staff Instructor: Dr. Hamid Rategh Email: hamid@smirc.stanford.edu Office Hours: MW 2:15-3:15PM @ CIS-126; Phone: 725-8313 TA: Mehdi Jahanbakht and Deji Akinwande Email: ta314@smirc.stanford.edu Office Hours @ Packard 106 Sunday 3:00 – 3:30 pm (for SCPD students only) Sunday 3:30 – 5:00 pm Thursday 5:00 –
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to manage the switch from a different network. | Switch>enable Switch#config term Switch(config)#interface f0/5 Switch(config-if)#speed 100 Switch(config-if)#duplex full Switch(config-if)#description Web Server Switch(config-if)#no shutdown | These commands are used to manually configure a port for 100 Mbps‚ full duplex‚ and assigns a description to the port. The port is then enabled with the no shutdown command. | Switch(config-if)#shutdown | Disables the port. | SW1>enable SW1#config
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users can narrowly limit signal recipients rather than broadcasting to all devices within given range . It makes use of weak electric fields on the surface of the body. Here‚ the human body acts as a transmission medium supporting IEEE 802.3 half-duplex communication at 10Mbit/s. RED is used to convey the meaning of warmth in communication. Instead of relying on electromagnetic waves or light waves to carry data‚ a RedTacton transmitter couples with extremely weak electric fields on the surface of
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Contents Question-1 2 Question-2 3 Question-3 6 Question-4 7 Question-5 8 Question-6 9 Question-7 10 Question-8 11 Question-1 Discuss the two basic “media access control” methods for shared media used in the TCP/IP suite. ANSWER: In the Open Systems Interconnection (OSI) model of communication‚ the Media Access Control layer is one of two sub layers of the Data Link Control layer and is concerned with sharing the physical connection to the network among several computers. Each computer
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up to 10 Mbps. Red Tacton does not rely on electromagnetic or a light wave to transmit data. It makes use of weak electric fields on the surface of the body. Using a new super-sensitive photonic electric field sensor‚ it can achieve duplex communication over the human body. The Red Tacton chips‚ which will be embedded in various devices‚ contain a transmitter and receiver build to send and accept data stored in a digital format. The data transfer between Red Tacton-enabled devices does
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Checkpoint: OSI Model Paul Tegner IT/242 April 22‚ 2011 Mark Burke OSI Model The OSI Model consists of seven layers. These layers are the application layer‚ presentation layer‚ session layer‚ transport layer‚ network layer‚ data link layer‚ and physical layer. The Application Layer The application layer is responsible for interaction between the operating system and the network services and provides an interface to the system. It provides the user interface to a range
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ALLOY STEELS I. A. ALLOYING ELEMENTS Any metallic element added during the making of steel for the purpose of increasing corrosion resistance‚ hardness‚ or strength. The metals used most commonly as alloying elements in stainless steel include chromium‚ nickel‚ and molybdenum. Characteristic of alloying elements Very important elements for alloy steels are manganese‚ nickel‚ chromium‚ molybdenum‚ vanadium‚ tungsten‚ silicon‚ copper‚ cobalt and boron. All commercial steels contain 0‚3-0
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