Fsk modulation and demodulation lab manual

The FSK generation and demodulation parts of the set-up can be represented by the block diagram in Figure 5 below. The Low-pass filter module is used to pick out one of the FSK signal's two sinewaves and the RECTIFIER and BASEBAND LPF combination form the envelope detector to complete the FSK signal's demodulation. Figure 5: an FSK generation. Communication II Lab (EELE ) Lab#6 FSK Modulation Demodulation Objectives: 1- To understand the operation theory of Frequency Shift Keying (FSK) modulation demodulation. 2- To implement the BFSK modulator by VCO. 3- To implement the BFSK detector by using PLL. Theory: 1. FSK Modulation. ES Lab#6 Ver 2.! 3! Procedures!! A- Frequency Demodulation with using Frequency Discriminator In this section we are going to build a simple FM demodulator. 1. Use the signal generator to generate an FM signal with the message signal being sine signal. The carrier frequency Hz, message signal frequency 10Hz, and frequency deviation Hz.

2. To study amplitude demodulation by linear diode detector 3. To study frequency modulation and determine its modulation factor 4. To study PLL as frequency demodulator 5. To study sampling and reconstruction of Pulse Amplitude modulation system 6. To study Pulse Amplitude Modulation a. using switching method b. by sample and hold circuit 7. FSK: Signals and Demodulation Frequency shift keying (FSK) is the most common form of digital modula tion in the high -frequency radio spec trum, and has important applications in telephone circuits. This article pro vides a general tutorial on FSK in its many forms. Both modulation and demodulation schemes will be dis cussed Binary FSK. Lab Manual: Communication Systems Lab (EEF) B R C M CET BAHAL DEPARTMENT OF ELECTRONICS COMMUNICATION ENGINEERING Page 11 EXPERIMENT NO. - 4 AIM: To study Pulse Width Modulation and Demodulation. APPARATUS: Dual trace CRO, PWM kit, Connecting leads. THEORY: The PWM is also known as pulse duration modulation.

FREQUENCY MODULATION AND DEMODULATION AIM: To perform the frequency modulation and demodulation using FM kit. APPARATUS REQUIRED: 1. Frequency modulation kit 2. DSO 3. Probes 4. Patch cords THEORY: Frequency modulation is a process of changing the frequency of a carrier wave in accordance with the slowly varying base band signal. Lab 2: Pulse Code Modulation (PCM) Objective The objective of this lab is to get familiarized with Pulse Code Modulation. Students are expected to write a Matlab code that will help them to understand the fundamentals of PCM. They will also observe the modulation and demodulation process of PCM using a pre-built hardware board. Theory. 2. Amplitude modulation and demodulation 3. Frequency modulation and demodulation 4. Pulse code modulation and demodulation. 5. a) Delta modulation b) Adaptive delta Modulation 6. BFSK modulation and Demodulation 7. BPSK modulation and Demodulation 8. TDM and FDM 9. Line Coding Schemes FSK, PSK and DPSK schemes (Simulation).