QPSK has ________ the bandwidth efficiency of BPSK.(a) Twice(b) Same(c) Half(d) Four timesI had been asked this question by my school principal while I was bunking the class.My enquiry is from Linear Modulation Techniques in portion Modulation Techniques for Mobile Radio of Wireless/Mobile

QPSK has ________ the bandwidth efficiency of BPSK.(a) Twice(b) Same(c

1.	QPSK has ________ the bandwidth efficiency of BPSK.(a) Twice(b) Same(c) Half(d) Four timesI had been asked this question by my school principal while I was bunking the class.My enquiry is from Linear Modulation Techniques in portion Modulation Techniques for Mobile Radio of Wireless/Mobile
Answer» Correct option is (a) Twice Best explanation: Quadrature phase shift keying (QPSK) has twice the BANDWIDTH of BPSK. It is because two bits are transmitted in a single modulation symbol. The phase of the carrier takes on one of the four equally SPACED VALUES, where each value of phase corresponds to a UNIQUE PAIR of message bit.

Discussion

No Comment Found

Related InterviewSolutions

In QAM, the amplitude is _______ and phase is _______(a) Varied, constant(b) Varied, varied(c) Constant, varied(d) Constant, constantI got this question in an online quiz.My query is from Combined Linear and Constant Envelope Modulation Techniques in chapter Modulation Techniques for Mobile Radio of Wireless/Mobile
The number of possible signal in M-ary signalling is given by M and M = __________ where n is an integer.(a) n(b) 2n(c) 2^n(d) n^2This question was addressed to me in examination.Question is taken from Combined Linear and Constant Envelope Modulation Techniques topic in chapter Modulation Techniques for Mobile Radio of Wireless/Mobile
Gaussian pulse shaping filter reduces the spectral occupancy and ISI.(a) True(b) FalseThis question was addressed to me in quiz.My question is taken from Pulse Shaping Techniques in chapter Modulation Techniques for Mobile Radio of Wireless/Mobile
As the roll off factor in raised cosine rolloff filter __________ the occupied bandwidth ________(a) Increases, decreases(b) Decreases, constant(c) Increases, increases(d) Decreases, increasesI have been asked this question during an online interview.I need to ask this question from Pulse Shaping Techniques in portion Modulation Techniques for Mobile Radio of Wireless/Mobile
Intersymbol interference (ISI) leads to ________ probability of the receiver for making an error in detecting the symbols.(a) Increased(b) Decreased(c) Zero(d) OneThe question was asked in an online interview.My query is from Pulse Shaping Techniques topic in chapter Modulation Techniques for Mobile Radio of Wireless/Mobile
Which of the following are two methods for generating FM signal?(a) Coherent method, noncoherent method(b) Product detector, envelope detector(c) Direct method, indirect method(d) Slope detector, Zero crossing detectorThe question was asked by my school teacher while I was bunking the class.The question is from Angle modulation in division Modulation Techniques for Mobile Radio of Wireless/Mobile
AM demodulation technique can be divided into _____ and _____ demodulation.(a) Direct, indirect(b) Slope detector, zero crossing(c) Coherent, noncoherent(d) Quadrature detection, coherent detectionI got this question in examination.I need to ask this question from Amplitude Modulation in section Modulation Techniques for Mobile Radio of Wireless/Mobile
In angle modulation, signal to noise ratio before detection is a function of ______(a) Modulation index(b) Input signal to noise ratio(c) Maximum frequency of the message(d) IF filter bandwidthI have been asked this question in a job interview.Query is from Angle modulation topic in chapter Modulation Techniques for Mobile Radio of Wireless/Mobile
A product detector in AM systems is also called ___________(a) Envelope detector(b) Differentiator(c) Integrator(d) Phase detectorThis question was posed to me by my school principal while I was bunking the class.The doubt is from Amplitude Modulation topic in portion Modulation Techniques for Mobile Radio of Wireless/Mobile
PN sequence can be generated using sequential logic circuits.(a) True(b) FalseThis question was posed to me in an online quiz.This interesting question is from Spread Spectrum Modulation Techniques in division Modulation Techniques for Mobile Radio of Wireless/Mobile

QPSK has ________ the bandwidth efficiency of BPSK.(a) Twice(b) Same(c) Half(d) Four timesI had been asked this question by my school principal while I was bunking the class.My enquiry is from Linear Modulation Techniques in portion Modulation Techniques for Mobile Radio of Wireless/Mobile

Discussion

No Comment Found

Related InterviewSolutions

Reply to Comment