Need for modulation recognition - software defined radio, Electrical Engineering

Assignment Help:

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.

 


Related Discussions:- Need for modulation recognition - software defined radio

Compare in-channel signalling with common channel signalling, Q. Compare in...

Q. Compare in-channel signalling with common channel signalling? Network wide signalling also involves end to end signalling between originating exchange and the terminating ex

Different kinds of high-tension fuses and low-tension fuses, Q. Different k...

Q. Different kinds of high-tension fuses and low-tension fuses ? Ans: There are two kinds of fuses they are a) L.V Fuses - 1) HRC cartridge fuses.   - 2) Semi enclosed re

Find voltage in circuit using the ideal op-amp technique, Q. Find v o in t...

Q. Find v o in the circuit shown in Figure by using the ideal op-amp technique.

Static v- i characteristics - power semiconductor devices, V- I Characteris...

V- I Characteristics The operation of the  diac can be explained by imagining it as two diodes connected  in series. When  applied voltage in either polarity is small ( less t

Why monitoring and control done, Why Monitoring and control done? Mo...

Why Monitoring and control done? Monitoring and control using microprocessors/computers is often done for the below reasons: - It is safer (faster response to non-standar

Matlab, Exercise 1: Data array manipulation and selection using for loops ...

Exercise 1: Data array manipulation and selection using for loops These exercises demonstrate the use of for loops in array manipulation and selection. a) Write a user-defined fun

Define gain and phase responses, Define Gain and Phase Responses? Expre...

Define Gain and Phase Responses? Expressing H(e j? ) in polar form as:   H (e j? ) = G (?) e jφ(?) G(?) is the "gain" of the discrete-time system and  φ(?) is the "phas

Dc generator, short note on armature reaction

short note on armature reaction

Data analysis in gis, Data analysis in GIS: Therefore, GIS consists of...

Data analysis in GIS: Therefore, GIS consists of the following: 1.  Database - for storage and retrieval of information. The database forms the foundation of the GIS syst

Determine the output voltage increment, (a) Design a 6-bit R-2 R ladder D/A...

(a) Design a 6-bit R-2 R ladder D/A converter. (b) For V ref = 10 V, find the maximum output voltage. (c) Determine the output voltage increment. (d) If the output voltag

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd