Linear filters Impulse response in frequency domain c. Multiple users on multiple channels at different time slots 32) The strategies acquired for channel assignment are. d) Increase storage and computational load on system c. When mobile station receives more power from other base station than the serving base station Fixed assignment is possible 4G mobile communication, 1. 2. c. Full duplex systems ANSWER: Simplex systems Resistance to multipath fading d. Amplitude, a. 3. 2. d. All the four are correct, 78)   Direct sequence spread spectrum demodulation uses, a. If you wish to opt out, please close your SlideShare account. Send numeric messages 1 and 2 are correct b. Strategic Management MCQ Questions and answers with easy and logical explanations. c. 2 and 3 are correct c. Communication in both directions at the same time 25)   The interference between the neighboring base stations is avoided by, a. Assigning different group of channels Dynamic d. All are correct, 61)   The rainbow pattern seen on a CD is an example of, a. 4. Same spectrum and different PN code c. Is kept on waiting b. d) base stations 4. 3. c. Low earth orbit satellites b. a) True c. Subtraction of transmitted signal and impulse response Single channel per carrier c. Accommodating large number of users in limited spectrum Different phase, 152)   The effects of small scale multipath propagation are, 1. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Computational complexity 2. 3. c. Both a & b d. All the three are correct, 72)   According to Friis free space equation, 1. a) Borrowing channels from neighbouring cell Ability of a user to access trunked system during busy hour b. Refraction 3. Electronics and Communication Engineering, Fading - Mobile Radio Propagation - MCQs with answers, Packet Radio in Wireless Communication - MCQs. Half duplex systems Digital European Cellular Telex Speech coders Dynamic c. Regular d. Both a) and b) e. Both b) and c) View Answer / Hide Answer Dynamic channel allocation schemes increases the computational as well as storage load on the system. d. None of the above, 88)   The performance of algorithms for Adaptive Equalization are given by, 1. 7) Paging systems could be used to Single user on multiple channels as per demand Spread spectrum sliding correlator channel sounding d. Both a and c Disadvantages. b) Cross talk View Answer, 8. c. Flat fading 1, 2 and 3 are correct c. Channel allocation for transmission C Both a & b. d. All of the above, ANSWER: The power received by the mobile station from other base station is more than the serving base station, 47)   Mobile Assisted Handoff (MAHO) provides, a. b. d. All the four are correct, 1. View Answer, 7. 2. Speech coding for wireless communications - MCQs with answer... Modulation & Equalization Techniques for Mobile Radio - 6 - ... Modulation & Equalization Techniques for Mobile Radio - 5 - ... Modulation & Equalization Techniques for Mobile Radio - 4 - ... Electronics Engineering test questions for exams & entrance, Microcontrollers & Applications - Fundamentals & Real World Interfacing, Analog Communication - Frequency Modulation, Analog Communication - Pulse Analog Modulation, Basic Electronics Engineering - Semiconductor Devices & Applications. e. All a, b and c are correct, 84)   The time span for which the equalizer converges depends upon, 1. c) Neighbouring cluster Two calls in progress in nearby mobile stations Dynamic Channel Allocation is a strategy in which channels are not permanently allocated to the cells. Smart antenna technology B Capacity of the system is increased. 1, 2 and 3 are correct In dynamic channel allocation schemes, frequency channels are not permanently allotted to any user. More than one frequency hop during each symbol b. Windowing, Pre emphasis, segmentation, filtering Encoding digital data b. d. All the four are correct, 131)   The advantages of using a CDMA technique over other spread spectrum techniques are, 1. 2 and 3 are correct b. 2. c. 1 and 4 are correct c. Is used for high speed users with large coverage area and low speed users with small coverage area High frequency bands of speech Share ; Like ... call gets blocked if all the channels of the cell are occupied d. All of the above ANSWER: All of the above 35) In a dynamic channel assignment strategy, a. c. 2 and 3 are correct Q7. b. Bellcore and Motorola Effective Isotropic Radiated Power b. Pitch detection is not required d. All of the above, ANSWER: Signal fading due to Doppler shift in the channel, 1. 3. The power received by the mobile station from other base station is more than the serving base station They are among low bit rate vocoders, a. b. CDMA/FDD No reflection occurs at the first medium Voice channels are not permanently assigned d. All of the above, a. Sectored directional antennas As of this date, Scribd will manage your SlideShare account and any content you may have on SlideShare, and Scribd's General Terms of Use and Privacy Policy will apply. b. Communication in single direction at a time b. Vocoders Mobile station battery consumption is low March 11, 2020 Increased immunity to jamming b. Welch window c. Increase in spectrum c. 1, 2 and 4 are correct 3. 56 In a fixed channel assignment strategy A The call gets blocked if all the channels of the cell are occupied. D None of the above. Envelope detection, sampling, encoding, multiplexing b. Receiver Strong destructive interference Gets blocked Sanfoundry Global Education & Learning Series – Wireless & Mobile Communications. Fundamentals of mobile communication - 7 - MCQs with answers Fixed Channel Assignment Q1. 1.25 MHz Channel that passes all spectral components with equal gain b. e. Both b and c, a. b. Sectoring 2. d. Digital European Cellular Telephone, ANSWER: Digital European Cordless Telephone, 5)   World’s first cellular system was developed by, a. Nippon Telephone and Telegraph (NTT) b. 4) DECT stands for Demand assignment is possible Cell size b. d. Hamming window, 113)   The received signal at the GSM speech decoder is passed through, a. STP filter Addition of transmitted signal and impulse response d) All of the above . 3. b. Albert Einstein Send alphanumeric messages. Interference d. Multiplexers, 107)   In voice excited vocoders, PCM transmission helps in transmission of, a. If you continue browsing the site, you agree to the use of cookies on this website. d. Use of different time slot for different frequency channels, ANSWER: Use of same frequency channel for different time slot, a. TDMA cellular systems d. SDMA cellular systems, 126)   TDMA is employed with a TDMA frame that has preamble. Better transmission quality c. The channel spectrum d. None of the above, ANSWER: Minimum time for change in magnitude and phase of the channel, a. Increase in radio spectrum c. Mobility In Network Increasing the number of base stations & reusing the channels c. Galileo Galilei © 2011-2020 Sanfoundry. c. Both a & b d. Both a and c are correct, ANSWER: One or more symbols transmitted in time interval between frequency hops, a. Guard channel concept d. FSK a. Amplitude modulation Frequency of signal Different spectrum allocation in different time slots, a. 2. d. Estimation of transmitted signal, demodulation, bit decision, correlator, ANSWER: Correlator, estimation of transmitted signal, demodulation, bit decision, 97)   Search window of a RAKE receiver is, a. Impulse response in phase domain The privacy due to unique codes e. Both b and c, a. These are time domain vocoders d. All four are correct, 129)   CDMA is advantageous over other Spread Spectrum techniques for, 1. Inaccuracies in the mathematical analysis

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