What is digital modulation? What is FSK? What is PSK? What is QAM? Define Spread-spectrum techniques.
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All materials on our website are shared by users. If you have any questions about copyright issues, please report us to resolve them. We are always happy to assist you. Give any four examples of wireless communication systems.
What is a base station? What is EDGE? Give the channel bandwidth for the same. List any four advantages of third generation 3G mobile networks. What are the advantages of micro cell zone concept? What are the reasons for choosing Hexagonal cells? Write four objectives of channel assignment strategies.
What is borrowing strategy in channel assignment? Define MAHO. What is the method to use the limited spectrum to unlimited subscribers? Write the formula for co-channel reuse ratio. What is cell splitting? List the methods to improve coverage and capacity in cellular systems.
What are the most popular standards of second generation? Explain the cellular system architecture in detail. Explain in detail the various applications of GPRS. Explain in detail the architecture of GPRS. Explain the concept of frequency reuse in detail. Explain the operations of cellular systems. Explain the various types of Handoff processes. If the load per user is 0. How many users per square kilometers will this system support?
What is the probability that a delayed call will have to wait for more than 10seconds? What is the probability that the call will be delayed for more than 10 seconds? What are the three basic propagation mechanisms in mobile communication system? Calculate the Fraunhofer distance of an antenna at 60MHz for a maximum dimension of 1m. Mention any for Indoor propagation models. List out the three small-scale fading effects of multipath in the radio channel.
What are the two advantages of the spread spectrum channel sounding system? What is Doppler shift? List out the types of small-scale multipath measurements techniques.
Consider a transmitter, which radiates a sinusoidal carrier frequency of MHz. What is level crossing rate? Define Doppler spread and Write the relationship between Doppler spread and Coherence time.
What is meant by Coherence bandwidth? Differentiate Fast fading and slow fading in Small Scale fading. What are the Time Dispersion Parameters of Multipath channels? The carrier frequency used for this system is MHz. Derive the Equation of the Path loss for the two-ray model with Antenna gains. Discuss about the following Outdoor propagation models. The narrow band and wide band received power over the interval The average narrow band received power.
What are the factors influencing small scale fading? Explain detail about type of small scale fading? What is meant by Doppler spread BD for the channel? Name the four space diversity reception techniques. What is meant by decision feedback equalization?
Write any three advantages of Constant envelope modulation. Mention the bit error probability of GMSK. Write the four important properties of MSK. Define absolute bandwidth. Name any three parameters useful to calculate BER. What is the use of CMA? What is Non-linear equalization? Explain the two methods used in 2G and 3G systems.
EC1451 MOBILE AND WIRELESS COMMUNICATION PDF
To make the students to know about the various modulation techniques, propagation methods, coding and multi access techniques used in the mobile communication. Various wireless network systems and standards are to be introduced. This also demonstrates the principle of trunking efficiency and how trunking and interference issues between mobile and base stations combine to affect the overall capacity of cellular systems. This also covers small propagation effects such as fading, time delay spread and Doppler spread and describes how to measures and model the impact that signal bandwidth and motion have on the instantaneous received signal through the multi-path channel. It also deals with the different types of equalization techniques and diversity concepts.
All materials on our website are shared by users. If you have any questions about copyright issues, please report us to resolve them. We are always happy to assist you. Give any four examples of wireless communication systems. What is a base station?