Right now I simply do this (pseudocode) for freq in freqs: for i in len(samples): sampl…
This question is a continuation of the discussion at How can a linear operator on DFT vector produce…
For OFDM synchronisation, we are using two training symbols according to the Schmidl and Cox method …
I know that why we use Carrier of high frequency to send message signal over a long distance, when t…
I have a question concerning BPSK and the bandpass filter that seems to be sometimes placed before t…
Based on what I read, I've made an algorithm for FM sound synthesis. I'm not sure if I did it right.…
I am creating a system (modulator and demodulator) for broadcasting binary data through an analog si…
I am deriving the temporal envelope of a signal (in a particular frequency band) by summing some FFT…
Could anybody tell me a method to calculate the "4 Hz modulation energy" for a speech signal? Thank…
I need to graph a 16 bits binary sequence, assuming that it'll be a FM analog signal I need to apply…
I've implemented a soft-decoder for DQPSK using the wonderful answers I received here: How to soft …
I'm successfully soft-decoding D-BPSK by taking the dot-product of the constellation-position of the…
I am implementing a non-coherent receiver for DBPSK. I have a computer science background with littl…
I am writing a script to frequency modulate the stereo audio signal, and later calculating the modul…
Is there any existing application to sample someone's voice and use it to modulate any other voice o…
I'm trying to visualize the differences on the output waveform of a modulator when using NRZ or a Ma…
My textbook have a question p.360 problem 6.26 is like this Consider the signal $v(t) = 8 cos (2…
I am doing some research into GNSS (Global Navigation Satellite Systems) and have come across variou…
My text book (Communication Systems analysis and design P.334, 335) have a FM signal is $s_{FM}…
I have a question form my teachers, and I cannot understand why I can find out the modulation index …
For fun and work I've to implement a java based application that can Encode text or data to sound an…
i am simulating OFDM transmitter in matlab....As u all know OFDM consists of different sub systems s…
One Question of my note is like this. Consider a communication channel with a bandwidth of 2400Hz. …
I am very confused about how to get the transmit sequence of the DPSK signal. In my lecture notes, …
What is the practical difference between Linear and Non Linear Modulation Techniques ? M ary Psk an…
Is the identification of each point on the constellation diagram arbitrary as long as the sender and…
So the exercise is basically a signal $f(t)$ that is going to modulate the carrier $Acosw_ct$ using …
First post here, trying to make it as good as possible. Do not know how to make the Python code look…
I have implemented a simple V.23-like FSK modem in C here. The peculiarity of the chosen modulation…
What kind of bit error rate do they get from deep space communications (Pioneer, Voyager, et.al.), a…
© 2012 - Nathan Osman - [About]