GATE ECE 1988 | Noise In Digital Communication Question 44 | Communications

GATE ECE 1988

MCQ (Single Correct Answer)

-0.6

In a digital communication system, transmissions of successive bits through a noisy channel are assumed to be independent events with error probability p. The probability of at most one error in the transmission of an 8 - bit sequence is

$$7\left( {1 - p} \right)/8 + p/8$$

$${\left( {1 - p} \right)^8} + 8p{\left( {1 - p} \right)^7}$$

$${\left( {1 - p} \right)^8} + {\left( {1 - p} \right)^7}$$

$${\left( {1 - p} \right)^8} + p{\left( {1 - p} \right)^7}$$

GATE ECE 1987

MCQ (Single Correct Answer)

-0.6

Companding in PCM systems leads to improved signal - to - quantization noise ratio. This improvement is for

lower frequency components only

higher frequency components only

lower amplitudes only

higher amplitudes only

GATE ECE Subjects

Browse all chapters by subject

General Aptitude

Verbal Ability Logical Reasoning Numerical Ability

Network Theory

Network Elements Sinusoidal Steady State Response Network Theorems Two Port Networks Network Graphs Transient Response State Equations For Networks Miscellaneous

Microprocessors

Instruction Set and Programming with 8085 Pin Details of 8085 and Interfacing with 8085

Signals and Systems

Discrete Time Signal Fourier Series Fourier Transform Continuous Time Signal Laplace Transform Fourier Transform Discrete Fourier Transform and Fast Fourier Transform Representation of Continuous Time Signal Fourier Series Discrete Time Linear Time Invariant Systems Transmission of Signal Through Continuous Time LTI Systems Transmission of Signal Through Discrete Time Lti Systems Miscellaneous Continuous Time Linear Invariant System Discrete Time Signal Z Transform Sampling

Electromagnetics

Waveguides Miscellaneous Antennas Transmission Lines Uniform Plane Waves Maxwell Equations

Digital Circuits

Logic Families Analog to Digital and Digital to Analog Converters Boolean Algebra Semiconductor Memories Number System and Code Convertions Logic Gates Combinational Circuits Sequential Circuits

Electronic Devices and VLSI

PN Junction Semiconductor Physics IC Basics and MOSFET BJT and FET

Control Systems

Stability Frequency Response Analysis Compensators State Space Analysis Root Locus Diagram Signal Flow Graph and Block Diagram Time Response Analysis Basic of Control Systems

Communications

Analog Communication Systems Noise In Digital Communication Random Signals and Noise Fundamentals of Information Theory Digital Communication Systems

Engineering Mathematics

Probability and Statistics Transform Theory Numerical Methods Calculus Differential Equations Linear Algebra Vector Calculus Complex Variable

Analog Circuits

Oscillators Operational Amplifier 555 Timer Diodes FET and MOSFET Power Amplifier Frequency Response Bipolar Junction Transistor Feedback Amplifier