Modulation

A MFSK channel with AWGN is simulated. The simulation is implemented as per the book Digital Communications by Proakis. Reed-Solomon coding is used to enhance the reliability of the system.

This code basically computes the BER of an OFDM system. The ifft size is 64 .16-QAM is the modulation Technique and convolution encoding rate 1/2 is used as the coding scheme.

This script calculates BER for a numebr of SNR values in gaussian environment for QAM 16 Modulation.It calculates 100 errors for each BER measuremnet for better results.I hope this will be helpful for students of signal processing and communications alike.


Platforms: Matlab

Simulink and Stateflow model of a full duplex Bluetooth communication link transmitting HV1, HV2, HV3, and SCORT [1] voice packets, and DM1 data packets. A system parameters block configures the whole model's packet type, slot pair and channel type. Stateflow is used to implement the...


Platforms: Matlab

This application example implements an end-to-end baseband communications system compliant to the US MIL_STD_188_110B intended for long-haul and tactical communications.This model supports four different data rates: 1200bps, 600bps, 300bps and 150bps. It also implements two different interleaver...


Platforms: Matlab

The .m file simulates a Spread-Spectrum Modulation Trx/Rcx system, in which, the phase of the pseudo-random sequence generated in the transmitter and used to encode the data stream is unknown a priory at the receiver.A parallel search strategy is employed to locally determine it in the place. It...


Platforms: Matlab

The model simulates asymmetric modulation which can be observed at second scope by zooming the waveform on time axis. In this modulation technique the reference signal is sampled at positive as well as at negative peak of the carrier and held constant between two sampled points. Three phase...


Platforms: Matlab

Digital modulation techniques. Digital shift keying.


Platforms: Matlab

By varying Modulation Index SDM and DDM can be varied and tested.Normally used in ILS (Instrument Landing System) applications.


Platforms: Matlab

OOK - On Off Keying, This is the Basic ASK Modulation , and remember to transmit at least (100/BER(theoretical)) data points


Platforms: Matlab

Initialize the message signal as 'b' and type quad in matlab workspace..


Platforms: Matlab

The simulink module includes- eye diagram of each modulation- constellation diagram of each modulation- power density spectrum comparison- delay over time of each modulation- bit error rate comparison depending on chosen SNRThe model can be configured via the parameters:- SNR- number of symbols /...


Platforms: Matlab

This script simulates the Binary Phase Shift keying. Since BPSK is a digital modulation scheme, you can modulate as many bits as you want. however, I have only simulated it for few bits, so that the results are visible.This is code for BPSK only, means it can only modulated two digital states on...


Platforms: Matlab

Quadrature Amplitude Modulation (QAM) is demonstrated in matlab using graphical user interface.To use it open QAM figure file


Platforms: Matlab

This program will simulate the CCK modulation for the IEEE 802.11b wireless protocol. Helpful for understanding how CCK interacts with QPSK.


Platforms: Matlab

Orthogonal Variable Spreading Factor (OVSF) code tree generation. Only input value is spreading factor (must be power of 2), and only output is cell array for orthogonal codes that is SF x SF in size.Code Tree Reference:3GPP TS 25.213 V10.0.0, "3rd Generation Partnership Project;Technical...


Platforms: Matlab

Features:- End-to-end 802.11a physical layer - All mandatory and optional data rates: 6, 9, 12, 18, 24, 36, 48, and 54 Mb/s- BPSK, QPSK, 16-QAM, 64-QAM modulations- Forward error correction coding (convolutional; code rates 1/2, 2/3, 3/4)- OFDM transmission: 52 subcarriers, 4 pilots, 64-pt FFTs,...


Platforms: Matlab

The model simulates space vector based three phase inverter with the state space model of thefilter. The model parameters such as frequency, switching frequency, load parameters, voltage, modulation index and filter A,B,C,D parameters.


Platforms: Matlab

It is training for students a PWM input signal to sinusoidal oscillator VI1 with simulink new library block.Student can change the frequency,the nivel and the ration for PWM, pulse width modulation input and set curve input/output frequency.


Platforms: Matlab

In biomedical applications it need to be using simple circuit for convey the data information ,this design it can be used as digital modulator for low bit rate. And select or programming the appropriate scheme modulation (ASK, FSK, BPSK).


Platforms: Matlab