ECE SEMESTER NOTES DSP SIGNALS AND SYSTEMS COMMUNICATIONS ANTENNA NOTES

ECE
ELECTRONICS AND COMMUNICATION ENGINEERING

ALL semester Notes You can Download Here...Notes will be very simple.It Contains Important Concept , Block Diagram and Sub headings....It is very useful during exam time to study....

Semester	Syllabus
Semester – 1	HS6151 Technical English MA6151 Mathematics PH6151 Engineering Physics CY6151 Engineering Chemistry GE6151 Computer Programming GE6152 Engineering Graphics
Semester – 2	HS6251 Technical English MA6251 Mathematics PH6251 Engineering Physics CY6251 Engineering Chemistry EC6201 Electronic Devices EE6201 Circuit Theory
Semester – 3	MA6351 Transforms and Partial Differential Equations EE6352 Electrical Engineering and Instrumentation EC6301 Object Oriented Programming and Data Structures EC6302 Digital Electronics EC6303 Signals and Systems EC6304 Electronic Circuits- I
Semester – 4	MA6451 Probability and Random Processes EC6401 Electronic Circuits II EC6402 Communication Theory EC6403 Electromagnetic Fields EC6404 Linear Integrated Circuits EC6405 Control System Engineering
Semester – 5	EC6501 Digital Communication EC6502 Principles of Digital Signal Processing EC6503 Transmission Lines and Wave Guides GE6351 Environmental Science and Engineering EC6504 Microprocessor and Microcontroller
Semester – 6	MG6851 Principles of Management CS6303 Computer Architecture CS6551 Computer Networks EC6601 VLSI Design EC6602 Antenna and Wave propagation Elective I
Semester – 7	EC6701 RF and Microwave Engineering EC6702 Optical Communication and Networks EC6703 Embedded and Real Time Systems Elective II Elective III Elective IV
Semester – 8	EC6801 Wireless Communication EC6802 Wireless Networks Elective V Elective VI
Elective -I	EC6001 Medical Electronics EC6002 Advanced Digital Signal Processing CS6401 Operating Systems EC6003 Robotics and Automation
Elective -II	EC6004 Satellite Communication EC6005 Electronic Testing EC6006 Avionics CS6012 Soft Computing IT6005 Digital Image Processing CS6013 Foundation Skills in Integrated Product Development
Elective -III	EC6007 Speech Processing EC6008 Web Technology EC6009 Advanced Computer Architecture EC 6010 Electronics Packaging EC6011 Electro Magnetic Interference and Compatibility
Elective -IV	EC6012 CMOS Analog IC Design EC6013 Advanced Microprocessors and Microcontrollers EC6014 Cognitive Radio EC6015 Radar and Navigational Aids EC6016 Opto Electronic Devices
Elective -V	EC6017 RF System Design CS6003 Ad hoc and Sensors Networks GE6082 Indian Constitution and Society EC6018 Multimedia Compression and Communication GE6075 Professional Ethics in Engineering GE6083 Disaster Management
Elective -VI	EC6019 Data Converters CS6701 Cryptography and Network Security GE6757 Total Quality Management MG6071 Entrepreneurship Development MG6088 Software Project Management GE6084 Human Rights

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EE6403 dsp important questions anna university questions

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ANALYSIS OF CONTINUOUS TIME SIGNALS

Signals Basic Types

Here are a few basic signals:

Unit Step Function

Unit step function is denoted by u(t). It is defined as u(t) = {10t⩾0t<0

• It is used as best test signal.
• Area under unit step function is unity.

Unit Impulse Function

Impulse function is denoted by δ(t). and it is defined as δ(t) = {10t=0t≠0

∫∞−∞δ(t)dt=u(t)

δ(t)=du(t)dt

Ramp Signal

Ramp signal is denoted by r(t), and it is defined as r(t) = {t0t⩾0t<0

∫u(t)=∫1=t=r(t)

u(t)=dr(t)dt

Area under unit ramp is unity.

Parabolic Signal

Parabolic signal can be defined as x(t) = {t2/20t⩾0t<0

∬u(t)dt=∫r(t)dt=∫tdt=t22=parabolicsignal

⇒u(t)=d2x(t)dt2

⇒r(t)=dx(t)dt

Signum Function

Signum function is denoted as sgn(t). It is defined as sgn(t) = ⎧⎩⎨⎪⎪10−1t>0t=0t<0

sgn(t) = 2u(t) – 1

Exponential Signal

Exponential signal is in the form of x(t) = eαt.

The shape of exponential can be defined by α.

Case i: if α = 0 → x(t) = e0 = 1

Case ii: if α < 0 i.e. -ve then x(t) = e−αt. The shape is called decaying exponential.

Case iii: if α > 0 i.e. +ve then x(t) = eαt. The shape is called raising exponential.

Rectangular Signal

Let it be denoted as x(t) and it is defined as

Triangular Signal

Let it be denoted as x(t)

Sinusoidal Signal

Sinusoidal signal is in the form of x(t) = A cos(w0±ϕ) or A sin(w0±ϕ)

Where T₀ = 2πw0

Sinc Function

It is denoted as sinc(t) and it is defined as sinc

(t)=sinπtπt

=0for t=±1,±2,±3...

Sampling Function

It is denoted as sa(t) and it is defined as

sa(t)=sintt

=0for t=±π,±2π,±3π...