How to achieve digital up conversion and digital down conversion in an OFDM transceiver system

Started by amitjonak 1 week ago5 replieslatest reply 1 week ago65 views
Hello again!I want to achieve wideband frequency hopping by digitally up converting my OFDM signal and then digitally down converting the signal at the receiver...

Fsk demodulation

Started by shalev 2 weeks ago1 replylatest reply 1 week ago76 views
Hey somebody can help me please to understand how they arrive to this solve of correlation rks,rkc. It is from a fsk demodulation algorithm they do 2 Integration,...

Get RMS value from Pulse Density Modulated signal

Started by eslavko 2 weeks ago13 replieslatest reply 1 week ago70 views
Hello...I need to measure voltage (RMS) from incoming PDM (Pulse Density Modulation) data.The voltage is actually 50Hz line voltage distorted sine.For test I do...

Why complex numbers are used/introduced in electricity

Started by sgrassi 2 weeks ago35 replieslatest reply 1 week ago181 views
Hello I hope you are all doing well, in these difficult times. I would like to ask for your help as I have to prepare (for a job interview):a 10 min excerpt from...

Setting 25KHz playback sampling rate in sound card

Started by gaurav_lohiya 2 weeks ago13 replieslatest reply 2 weeks ago71 views
I am sampling the IF signal at 625 KHz and after AM demodulation I am getting the audio at sampling rate of 625 KHz. The audio is downsampled to 25 KHz and routed...

Moving average followed by a decimator.

Started by Maurizio_Malaspina 3 weeks ago4 replieslatest reply 2 weeks ago101 views
I've recently tried to analyze the math behindĀ a simple moving average filter followed by a decimator. I was unable to find any paper on the web.The practical implementation...

Sampling and using the data

Started by kimfmx 3 weeks ago12 replieslatest reply 3 weeks ago94 views
Hi,I have been looking through Google, and have not gotten much wiser, so i turn to the experts.I have a Signal lets say at 393.000 Mhz that has a bandwidth of 50KHZ,...

What does filtering do to a signal in time domain? Does the signal gets distorted?

Started by amitjonak 3 weeks ago9 replieslatest reply 3 weeks ago110 views
Hello everyone!When considering a transceiver system, if we do a certain filtering operation on the signal, will the BER of the system be affected? My point is,...

Do we use a Matched filter in an OFDM system for pulse shaping?

Started by amitjonak 3 weeks ago3 replieslatest reply 3 weeks ago60 views
Hello!Just like we can use a SRRC filter for pulse shaping BPSK symbols, why is it that we cannot use a SRRC filter for pulse shaping a BPSK modulated OFDM symbol?...

Can anyone tell what is the general BER obtained when using a DUC and a DDC in the system?

Started by amitjonak 1 month ago11 replieslatest reply 3 weeks ago73 views
Hello,I am trying to build a wideband frequency hopping OFDM system on Simulink. My OFDM system, along with subcarrier interleaving works fine otherwise. The problem...

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