Software Defined Radio MCQ Questions And Answers - Cognitive Radio

Explanation: Software-defined radio is a radio communication system where components that have been traditionally implemented in hardware are instead implemented by means of software on a personal computer or embedded system.

Explanation: True, A basic SDR system may consist of a personal computer equipped with a sound card.

Explanation: Spread spectrum and ultrawideband techniques allow several transmitters to transmit in the same place on the same frequency with very little interference, typically combined with one or more error detection and correction techniques to fix all the errors caused by that interference.

Explanation: The term software radio was coined in 1984 by a team at the Garland, Texas, Division of E-Systems Inc.

Explanation: The plug and play module must be compatible with radio environment. It must be controllable under defined module and have predictive usage of resources.

Explanation: Environment management stream characterizes radio surrounding usage in terms of time, frequency, and space. It also includes channel identification and estimation of channel interference levels.

Explanation: The RF front-end section in receive mode consists of antenna-matching unit, low noise amplifiers, filters, local oscillators, and analog to digital converters. The power amplifier is a part of RF front-end section in transmit mode.

Explanation: GNU radio uses general purpose processor for baseband processing. This confines the signal processing capabilities to one particular processor. It is one of limitations of using GNU radio.

Explanation: A radio platform has standard limits defined for RF coverage, digital access bandwidth, and processing capacity. All bands and modes with satisfactory link quality available at region of interest and meeting the set limits are considered as useful radio resource.

Explanation: Yes, A software-defined radio can be flexible enough to avoid the limited spectrum.