if you want to remove an article from website contact us from top.

# for m equally likely messages the average amount of information h is

Category :

### Mohammed

Guys, does anyone know the answer?

get for m equally likely messages the average amount of information h is from screen.

## UNIT 1

Find and create gamified quizzes, lessons, presentations, and flashcards for students, employees, and everyone else. Get started for free!

## University

Science University UNIT 1 - INFORMATION THEORY

VIGNESH M 27 plays

## 20 Qs

Show Answers See Preview 1. Multiple-choice 30 seconds 1 pt Q.

### For M equally likely messages, the average amount of information H is

answer choices H = log10M H = log2M H = log10M2 H = 2log10M 2. Multiple-choice 30 seconds 1 pt Q.

### The channel capacity is

The maximum information transmitted by one symbol over the channel

Information contained in a signal

The amplitude of the modulated signal

All of the above 3. Multiple-choice 30 seconds 1 pt Q.

### According to Shannon Hartley theorem,

The channel capacity becomes infinite with infinite bandwidth

The channel capacity does not become infinite with infinite bandwidth

Has a tradeoff between bandwidth and Signal to noise ratio

The channel capacity does not become infinite with infinite bandwidth and has a tradeoff between bandwidth and Signal to noise ratio

4. Multiple-choice 30 seconds 1 pt Q.

### The channel capacity according to Shannon's equation is

Maximum error free communication

Defined for optimum system

Information transmitted

All of the above 5. Multiple-choice 30 seconds 1 pt Q.

### The technique that may be used to increase average information per bit is

Shannon-Fano algorithm

Digital modulation techniques

6. Multiple-choice 30 seconds 1 pt Q.

### Code rate r, k information bits and n as total bits, is defined as

answer choices r = k/n k = n/r r = k * n n = r * k 7. Multiple-choice 30 seconds 1 pt Q.

### Information rate is defined as

Information per unit time

Average number of bits of information per second

rH All of the above 8. Multiple-choice 30 seconds 1 pt Q.

### The mutual information

answer choices Is symmetric Always non negative

Is symmetric & Always non negative

None of the above 9. Multiple-choice 30 seconds 1 pt Q.

### Entropy is

Average information per message

Information in a signal

Amplitude of signal All of the above 10. Multiple-choice 30 seconds 1 pt Q.

### The memory less source refers to

No previous information

No message storage

Emitted message is independent of previous message

None of the above 11. Multiple-choice 30 seconds 1 pt Q.

### The expected information contained in a message is called

answer choices Entropy Efficiency Coded signal None of the above 12. Multiple-choice 30 seconds 1 pt Q.

### In discrete memoryless source, the current letter produced by a source is statistically independent of _____

answer choices Past output Future output

Past output & Future output

None of the above 13. Multiple-choice 30 seconds 1 pt Q.

### Huffman coding technique is adopted for constructing the source code with ________ redundancy.

answer choices Maximum Constant Minimum Unpredictable 14. Multiple-choice 30 seconds 1 pt Q.

### Which type of channel does not represent any correlation between input and output symbols?

answer choices Noiseless Channel Lossless Channel Useless Channel

Deterministic Channel

15. Multiple-choice 30 seconds 1 pt Q.

### In digital communication system, smaller the code rate, _________are the redundant bits.

answer choices less more equal unpredictable 16. Multiple-choice 30 seconds 1 pt Q.

### In channel coding theorem, channel capacity decides the _________permissible rate at which error free transmission is possible.

answer choices Maximum Minimum Constant None of the above 17. Multiple-choice 30 seconds 1 pt Q.

### According to Shannon's second theorem, it is not feasible to transmit information over the channel with ______error probability, although by using any coding technique.

answer choices small large stable unpredictable 18. Multiple-choice 30 seconds 1 pt Q.

### Which among the following is/are the essential condition/s for a good error control coding technique?

Faster coding & decoding methods

Better error correcting capability

Maximum transfer of information in bits/sec

All of the above 19. Multiple-choice 30 seconds 1 pt Q.

Shannon and Weaver’s (1949) model of communication has the following components: ______.

स्रोत : quizizz.com

## [Solved] The average information associated with an extremely likely

The entropy of a probability distribution is the average or the amount of information when drawing from a probability distribution. It is calculated as: \(H =

Home Communication Systems Information Theory Entropy Coding

## Question

The average information associated with an extremely likely message is zero. What is the average information associated with an equally likely message?

This question was previously asked in

ESE Electronics 2012 Paper 2: Official Paper

Attempt Online

View all UPSC IES Papers >

Zero Infinity

Depends on total number of messages

Depends on speed of transmission of the message

Option 3 : Depends on total number of messages

Crack GATE Electrical with

India's Super Teachers

FREE

Demo Classes Available*

Free Tests

View all Free tests >

FREE

CT 1: Building Materials

4.6 K Users

10 Questions 20 Marks 12 Mins

Start Now

## Detailed Solution

The entropy of a probability distribution is the average or the amount of information when drawing from a probability distribution.

It is calculated as:

H=∑i=1M⁡pilog21pi bits

pi is the probability of the occurrence of a symbol.

The number of outcomes = M.

Since all the outcomes are equally likely, the probability of each outcome happening is:

p=1M

The information associated with each outcome will be:

H=∑i=1M⁡1Mlog211/M H=log2M

Hence, Entropy depends on the number of meassages.

Share on Whatsapp

Last updated on Sep 21, 2022

The Union Public Service Commission has released the UPSC IES Prelims Exam Date. The Exam will be conducted on 19th February 2023 for both Paper I and Paper II. Earlier, the revised UPSC IES Interview Travel Allowances for 2022 which stages that the applicant must book the lower air ticket of economy class at least 21 days before the journey. The candidates must note that this is with the reference to 2022 cycle. Recently, the board has also released the UPSC IES Notification 2023 for a total number of 327 vacancies. The candidates can apply between 14th September 2022 to 4th October 2022. The candidates must meet the USPC IES Eligibility Criteria to attend the recruitment.

India’s #1 Learning Platform

Start Complete Exam Preparation

Daily Live MasterClasses

Practice Question Bank

Mock Tests & Quizzes

Trusted by 3.4 Crore+ Students

‹‹ Previous Ques Next Ques ››

## More Entropy Coding Questions

Q1.  _______ tells if the transmission rate is less than channel capacity, then there exists _______ that permit error free transmission.Q2. In Huffman coding, data in a tree always occur at -Q3. Which of the following algorithms is the best approach for solving Huffman codes?Q4. Huffman coding gives -Q5. If the constraint length of an (n, k, L) convolution code is defined as number of encoder output bits influenced by each message bit, then the constraint length is given by -Q6. Match List-I with List-II and select the correct answer using the code given below the lists- List-I List-II (A) Huffman code (1) Elimination of redundancy (B) Error-correcting (2) Reduces bit rate (C) NRZ-coding (3) Adapts the transmitted signal to the line (D) Delta modulation (4) Channel codingQ7. The Shannon-Hartley law -Q8. Let H(X) denote the entropy of a discrete random variable X taking K possible distinct real values. Which of the following statements is/are necessarily true?Q9. Let U and V be two independent and identically distributed random variables such that  P(U = +1) = P(U = -1) = 1/2. The entropy H(U + V) in bits isQ10. What is the entropy of a communication system that consists of six messages with probabilities 1/8, 1/8, 1/8, 1/8, 1/4, and 1/4 respectively ?

Q1.  _______ tells if the transmission rate is less than channel capacity, then there exists _______ that permit error free transmission.Q2. An event has two possible outcomes with probability P1 =

12 and P1 = 164

. The rate of information with 16 outcomes per second is -

Q3. In Huffman coding, data in a tree always occur at -Q4. Which of the following algorithms is the best approach for solving Huffman codes?Q5. Channel capacity is a measure of -Q6. Huffman coding gives -Q7. If the constraint length of an (n, k, L) convolution code is defined as number of encoder output bits influenced by each message bit, then the constraint length is given by -Q8. Match List-I with List-II and select the correct answer using the code given below the lists- List-I List-II (A) Huffman code (1) Elimination of redundancy (B) Error-correcting (2) Reduces bit rate (C) NRZ-coding (3) Adapts the transmitted signal to the line (D) Delta modulation (4) Channel codingQ9. The Shannon-Hartley law -Q10. Directions:  In the following question there are two statements, one labelled as 'Statement (I)' and the other as 'Statement (II)'. You are to examine these two statements carefully and select the answers to these items using the code given below. Statement (I): Shannon has shown that it is possible to achieve error-free communication by adding sufficient redundancy. Statement(II): The addition of an extra check digit increases redundancy.

स्रोत : testbook.com

## CareerRide

Study with Quizlet and memorize flashcards containing terms like In uniform quantization process a. The step size remains same b. Step size varies according to the values of the input signal c. The quantizer has linear characteristics d. Both a and c are correct, The process of converting the analog sample into discrete form is called a. Modulation b. Multiplexing c. Quantization d. Sampling, The characteristics of compressor in μ-law companding are a. Continuous in nature b. Logarithmic in nature c. Linear in nature d. Discrete in nature and more.

## CareerRide--Digital Communication

5.0 (1 review) Term 1 / 124

In uniform quantization process

a. The step size remains same

b. Step size varies according to the values of the input signal

c. The quantizer has linear characteristics

d. Both a and c are correct

Click the card to flip 👆

Definition 1 / 124 d

Click the card to flip 👆

Created by Ernest_Villanueva

### Terms in this set (124)

In uniform quantization process

a. The step size remains same

b. Step size varies according to the values of the input signal

c. The quantizer has linear characteristics

d. Both a and c are correct

d

The process of converting the analog sample into discrete form is called

a. Modulation b. Multiplexing c. Quantization d. Sampling c

The characteristics of compressor in μ-law companding are

a. Continuous in nature

b. Logarithmic in nature

c. Linear in nature

d. Discrete in nature

a

The modulation techniques used to convert analog signal into digital signal are

a. Pulse code modulation

b. Delta modulation

d. All of the above d

The sequence of operations in which PCM is done is

a. Sampling, quantizing, encoding

b. Quantizing, encoding, sampling

c. Quantizing, sampling, encoding

d. None of the above

a

In PCM, the parameter varied in accordance with the amplitude of the modulating signal is

a. Amplitude b. Frequency c. Phase

d. None of the above

d

One of the disadvantages of PCM is

a. It requires large bandwidth

b. Very high noise

c. Cannot be decoded easily

d. All of the above a

The expression for bandwidth BW of a PCM system, where v is the number of bits per sample and fm is the modulating frequency, is given by

a. BW ≥ vfm b. BW ≤ vfm c. BW ≥ 2 vfm d. BW ≥ 1/2 vfm a

The error probability of a PCM is

a. Calculated using noise and inter symbol interference

b. Gaussian noise + error component due to inter symbol interference

c. Calculated using power spectral density

d. All of the above d

In Delta modulation,

a. One bit per sample is transmitted

b. All the coded bits used for sampling are transmitted

c. The step size is fixed

d. Both a and c are correct

d

By signing up, you accept Quizlet's

### Sets found in the same folder

Fourozan Chapter 10-23

308 terms Ernest_Villanueva

CareerRide--Antenna and Wave Propagation

100 terms Ernest_Villanueva

CareerRide--Telecommunications & Switching Sy…

70 terms Ernest_Villanueva

[EST] Frenzel Q&A - Chapter 7: Communications…

41 terms ellisiver

### Other sets by this creator

ECT-Refresher 2 75 terms Ernest_Villanueva ECT-Refresher 1 89 terms Ernest_Villanueva Final-Elecs 201 terms Ernest_Villanueva

Fourozan--Chapter 19

54 terms Ernest_Villanueva

### Other Quizlet sets

NHA questions 46 terms classy_na econ cht 13 24 terms kody_williams8 mgt 210 51 terms Addison_11_tc3 HS 3 Final Exam 150 terms mcnamarakadih08 PLUS 1/3

स्रोत : quizlet.com

Do you want to see answer or more ?
Mohammed 7 day ago

Guys, does anyone know the answer?