Need for modulation recognition - software defined radio, Electrical Engineering

Need for Modulation Recognition

There are so many communication signals all available with different types of modulation and different frequencies. It is necessary to identify and closely monitor these signals for few applications. Surveillance and military operations require classification of modulation whether analog or digital modulation technique because it is necessary to know the type of incoming signal. How to observe and identify modulated signals is necessary to know about valuable information. The recognizers help to distinguish the signal in presence of (AWGN) along with presence of other signals. The process of recognition is the first step in demodulating the original signal.

Modulation recognition starts with modulation feature extraction to obtain unique information related to amplitude, phase, and frequency. Then, feature recognition is applied by using logic analysis to match features to known templates, or using statistical analysis to find a solution based on probabilities.  The automatic recognition of the modulation format of a detected signal is a major task of an intelligent receiver, with various civilian and military applications. Without any knowledge about incoming signal and its parameters, blind identification of modulation technique is difficult. Proper demodulation of the incoming signal takes place with the help of automatic modulation recognition without knowing the modulation scheme beforehand. Automatic modulation recognition is an emerging topic for software-defined radios. 

Furthermore, blind recognition of the modulation format of the received signal is an important problem in software defined radio (SDR). The Software Defined Radio (SDR) is widely used in military and commercial communication applications. Meanwhile, the requirement of identifying the modulation format of the incoming signal is necessary for designing intelligent wireless systems that can be used in different applications.

 

Posted Date: 3/30/2013 6:59:32 AM | Location : United States







Related Discussions:- Need for modulation recognition - software defined radio, Assignment Help, Ask Question on Need for modulation recognition - software defined radio, Get Answer, Expert's Help, Need for modulation recognition - software defined radio Discussions

Write discussion on Need for modulation recognition - software defined radio
Your posts are moderated
Related Questions
what is difference between dual trace and dual beam cro?

A certain cellular telephone antenna has an input impedance at f=1.0 GHz modeled by a shunt R-C combination, with R=200Ω and C=2.0pF. Because of manufacturing restrictions, you can

Charging of the capacitor: Considering the below diagram, with slight approximation the ripple voltage can be supposed as triangular. To the cut-out point from the cut-in poin

Complier-High Level language It also  translates the  whole  high  level  program  into object  program if it does not  have any  syntax error. The disadvantage of the  in

Addition of binary numbers Example:   Add  110010102 ( -510). and 00000101 2 (+5 10 ) Solution :                         Binary                                   signed

Explain the construction and working of a calomel electrode?

emitter followers regulator

Q. Explain the basic principle of linear sweep voltage generator A linear time base generator or sweep generator is one that provides an output waveform, a portion of which exh

What are the advantages of modern ac generators and Integrated Drive Generators? There are two questions here. I''d really like it if somebody could help me. I''m an AE student.

LT Metering or Low Tension Metering The subsequent types of meters are generally used for LT consumers: Whole Current Meters i)   Single phase meters ii)   3-phase