Mobile Assisted Handoff (MAHO) provides, A. Avoids complex equalizers Large coherence time of the channel as compared to the delay constraints Single user on multiple channels as per demand C. Un availability of the channel d. Different spectrum and same PN code, ANSWER: Same spectrum and different PN code, 77)   Advantage of using Spread Spectrum modulation is/are, 1. Free download in PDF Communication Multiple Choice Questions(MCQs) with Answers for competitive exams. Trunking in a cellular network refers to, A. D. None of the above, A. Limited internet browsing c. Digital European Cordless Telephone c. Different spectrum and different PN code b. Mobile radio channel may be modeled as linear filter 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. d. Sampling, Envelope detection, multiplexing, encoding, ANSWER: Envelope detection, sampling, encoding, multiplexing, 106)   Vocal tract cepstral coefficients and excitation coefficients are separated by, a. Samplers 2. These Communication Objective Questions with Answers are important for competitive exams UGC NET, CAT, CMAT, GATE, IBPS Specialist Recruitment Test. Fixed Better measure of security D. Both a and b Easier handoff 3. d. None of the above, 62)   Fresnel Reflection Coefficient is a factor of, 1. 3. MULTIPLE CHOICE QUESTIONS WITH ANSWERS ON NETWORK. d. All of the above, 46)   In Mobile Assisted Handoff (MAHO), the handoff takes place when, a. Equalizer structure b. c. MSC need not monitor the signal strength b. Time synchronization problems More than one frequency hop during each symbol B. 2. B. Hopping rate greater than or equal to information symbol rate 2. Synchronization information Low spectral efficiency d. None of the above, a. Its ability to frequency reuse, A. Voice channels are not permanently assigned Amplitude of signal, 85)   The Linear Equalizer may be implemented as, a. Smart antenna technology C. Channel allocation for transmission c. Multiplexed signals Recursive least squares algorithm, 91. b. a) Noise b) Semantic problems c) Cultural barriers d) Over communication View Answer d. All of the above, 14)   IMT-2000 is a digital mobile system that functions as, a. Pager B. A. Edwin Armstrong c. 1 and 4 are correct Low frequency bands of speech Division is simpler B. B. c. 1, 2 and 4 are correct B. d. None of the above, 88)   The performance of algorithms for Adaptive Equalization are given by, 1. c. Blocked calls D. All of the above, 46. Focusing radio energy towards ground When mobile station moves between two cellular systems Time B 14. c. Transmitter and receiver And, if you really want to know more about me, please visit my "About" Page. The strategies acquired for channel assignment are, A. Matched filter It is vulnerable to timing problems, A. C 10. 2. 2. B. Sectoring Fixed assignment is possible No reflection occurs at the first medium B. d. All of the above, 99)   Waveform coders and Vocoders are the types of, a. b. Types of small scale fading, based on Doppler spread are, A. Larger capacity Large coherence time of the channel as compared to the delay constraints c. Frequency divider B. b. C. More battery consumption b. Two calls in progress in nearby mobile stations B. Number of bit errors during transmission C. Minimum time for change in magnitude and phase of the channel Interference rejection capability Increase in probability of collision Temporary failure of message transfer 2. D. Both a and c C. 1, 2 and 4 are correct Token ring 2. B. Welch window Sampling, Envelope detection, encoding, multiplexing 4. 2. d. All of the above, 98)   Speech Coders are categorized on the basis of, a. 1 and 3 are correct c. Regular These are time domain vocoders In a dynamic channel assignment strategy, A. Blocking is reduced Distance between the centers of the co channel cells Spectrum unavailability When all of the radio channels are in use in a trunking system, A. Capacity of the system is increased a. D. All the four are correct, 1. D. All of the above, Ans:- Focusing radio energy towards ground, 60. b. Roamer 3. b. c. 2 and 3 are correct C. Transceiver These short objective type questions with answers are very important for Board exams as well as competitive exams. d. Pre emphasis, segmentation, filtering, windowing, ANSWER: Pre emphasis, segmentation, windowing, filtering, 112)   The windowing technique used for speech coding in GSM Codec is, a. Blackman window 2 and 3 are correct C. The queue may be provided c. Bandwidth of the signal Indirectly proportional to Doppler spread d. Hamming window, 113)   The received signal at the GSM speech decoder is passed through, a. STP filter A call within the cell c. 1, 2 and 3 are correct e. Both a and c, 1. D. All of the above, A. c. One or more symbols transmitted between frequency hops 2. TELECOM MCQS … Linearity, A. B. Using same communication medium b. These short solved questions or quizzes are provided by Gkseries. d. All of the above, a. Transmitter Hand off Linear filters D. All of the above, 99. b. 2. The speech sequence in GSM Codec consists of, A. Pre emphasis, segmentation, windowing, filtering C. Voice message 3. B. Calculations and analysis is increased Fingers Propagation delays are eliminated The channel allocated is not available C. Accommodating large number of users in limited spectrum 4. Use of spatial locations of mobile units within the cell b. e. Both b and c are correct, 142)   The advantage of using SDMA over other spread spectrum technique is, a. B. Send alphanumeric messages B. Ib bits 3. ———– introduced Frequency Modulation for mobile communication systems in 1935. B. Communication in single direction at a time Scheduled access protocol Electronics and Communication Engineering Questions and Answers. B. D. All the four are correct, 130. 2. B. 3. COMMUNICATION SYSTEMS Questions and Answers pdf free download for ece mcqs objective type interview questions lab viva manual GATE CAT syllabus Skip to content Engineering interview questions,Mcqs,Objective Questions,Class Notes,Seminor topics,Lab Viva Pdf free download. Different phase, 152. B. The techniques used for small scale multipath measurements are, 1. Noise developed at the receiver 2. d. Both a and c are correct, ANSWER: One or more symbols transmitted in time interval between frequency hops, a. Each user is assigned unique frequency slots d. Both a and b This activity contains 15 questions. c. Yagi uda antennas Waveform coders and Vocoders are the types of, A. Multiple pulses per period 3. D. All are correct, 61. The free space model of propagation refers to, 1. Time-domain graph plots Multiple Choice Question and Answer. D. Each signal is modulated with frequency modulation technique, Ans:- Different users in different time slots, 123. C. One or more symbols transmitted between frequency hops 3. 2. B. d. All four are correct, a. B. These short objective type questions with answers are very important for Board exams as well as competitive exams. 2)   ———– introduced Frequency Modulation for mobile communication systems in 1935. a. Edwin Armstrong D. All of the above, 156. b. CDMA/FDD Practice these MCQ questions and answers for preparation of various competitive and entrance exams. 4. B. Windowing, Pre emphasis, segmentation, filtering d. None of the above, 30)   Spectrum Efficiency of a cellular network is, a. One or more symbols transmitted in time interval between frequency hops ElectronicsPost.com is a participant in the Amazon Services LLC Associates Program, and we get a commission on purchases made through our links. c. Channel that passes all spectral components with linear phase 4G mobile communication, 1. 2. Multi transmission in one time slot, a. Frequency of signal The algorithms acquired for adaptive equalization are, 1. 3. A They require large antennas, have lower bandwidth and are difficult to manage in cells and frequency reuse schemes X B They require small antennas and have higher bandwidth b. Doppler spread small scale fading Frequency of the incident wave, A. Avoids ISI 4. b. Welch window b. 4G Multiple Choice questions and answers pdf free download for freshers experienced 4G faqs,Objective certification,Interview questions. c. Irrespective of the location of the user D. All of the above, 48. List and explain two (2) reasons why communication skills is important in our lives. 2. D. None of the above, A. c. Modulation e. None of the above, ANSWER: Convolution of transmitted signal and impulse response, 155)   Direct RF pulse system helps in calculating, a. 3. b. CDMA Time diversity 1, 2 and 3 are correct C. Coherence Bandwidth of the channel is equal to bandwidth of transmitted channel Increase in probability of collision Impulse response is time varying 8 users B. C. Demodulator b. Ib bits B. Termination of a call D. Both a and c are correct, Ans:- One or more symbols transmitted in time interval between frequency hops, A. Rate of convergence b. Increased immunity to jamming c. Use of same time slot for different frequency channel A 12. MOBILE COMMUNICATION Multiple Choice Questions :-1. b. d. Both a and b Multiple user access Process of transferring the call to the new base station D. None of the above, A. d. Use of different time slot for different frequency channels, ANSWER: Use of same frequency channel for different time slot, a. TDMA cellular systems c. Small coherence time of the channel as compared to the delay constraints 3. e. All a, b and c are correct, 92)   Diversity employs the decision making at, a. Transmitter B. Modulation technique D. All of the above, 36. Increases with square of the distance between the transmitter and receiver 2. Dynamic D. None of the above, 17. c. New channel allocation is done C. Encoders More than one frequency hop during each symbol B. Vocoders 2. The 2G GSM technology uses a carrier separation of, A. When mobile station moves in two cellular systems with different MSC D. All of the above, 101. C. 2 and 4 are correct b. 2. Fading due to large obstructions Multiple choice and open answer questions Try the multiple choice questions below to test your knowledge of this chapter. Hand off Computer Knowledge Communications MCQ Multiple Choice Questions and Answers PDF Download for the Government Jobs, Competitive Exams and Public / Private Tests It rejects narrow band interference C. Low earth orbit satellites Mobile station battery consumption is low The interference between the neighboring base stations is avoided by, A. Assigning different group of channels b. 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