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

Started by amitjonak 8 months ago12 replieslatest reply 6 months ago88 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...

Tunable power divider

Started by cogwsn 8 months ago7 replieslatest reply 6 months ago93 views
Hi, Can anyone please suggest any tunable power divider available in market. I tried searching a lot, but found only research articles or patents. For a project...

Evaluating RF ADC architectures - Sub-Sampling or Nyquist ?

Started by krishk24 6 months ago4 replieslatest reply 6 months ago102 views
HelloI am trying to decide on the most optimal ADC architecture for an high bandwidth receiver application.The signal bandwidth of interest is 2.5 GHz. There are...

Better results interpolating a signal than resampling it - why?

Started by Walter Wego 6 months ago4 replieslatest reply 6 months ago146 views
Dear all,I have a task that requires that I deal with nonuniformly sampled signals (not plain vanilla time series data).  Without changing sample rates, I need...

Difference amplitude (x[n] - y[n-1]) quantization in first order iir

Started by max3031 7 months ago14 replieslatest reply 6 months ago133 views
Hi,I am dealing with the first order iir filter. Formula is y[n] = y[n-1] + alfa*(x[n] - y[n-1]). x[n] is new input sample while y[n] is the output. I quantized...

Why complex numbers are used/introduced in electricity

Started by sgrassi 7 months ago36 replieslatest reply 6 months ago211 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...

OT: Laughing in the Face of Adversity

Started by stephaneb 7 months ago14 replieslatest reply 6 months ago284 views
Humor helps us take back control and to connect - two things we have lost in our fight against the pandemic. Feel free to share your best finds. they're playing...

Design a preamble structure for OFDM

Started by Milruwan 7 months ago8 replieslatest reply 7 months ago94 views
Hi...I'm designing a 1024-point OFDM transceiver system for my university project. First I implement a 64-point OFDM transceiver referring to WLAN 802.11a model....

CMSIS CFFT bit reversal table -how to generate?

Started by mjbcswitzerland 2 years ago6 replieslatest reply 7 months ago427 views
Hi All The ARM CMSIS  FIXED POINT FFTs uses a bit reversal table at the end of the FFT calculation to transpose the output bins to their linear ordering....

Generate a signal with linearly increasing Bandwidth

Started by dkgupta 7 months ago22 replieslatest reply 7 months ago158 views
Hi all,How can i generate a signal with linearly increasing bandwidth over time? (It means i want to calculate STFT and expect the spectrum to expend with each iteration...

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