Questions tagged [dsp]
DSP stands for Digital Signal Processing or Digital Signal Processor.
442 questions
11 votes
7 answers
3k views
Why do DSP systems not use caches?
While studying for my Embedded System Design test I came across the following lines on the Wikipedia page on Harvard Architecture: Digital signal processors (DSPs) generally execute small, highly ...
0 votes
0 answers
50 views
What kind of noise does DPSK need to worry about?
I am completely new to DSP. I am not even studying anything in this field, but I'm working on a frequency division multiplexer project that takes two digital bitstreams as tge input, uses DPSK to ...
0 votes
0 answers
36 views
Working with ADS with modulated signals at different frequencies
While working with ADS with different modulated noisy signals at different frequencies I noticed that the rate and the analysis center frequency make a big difference in the shape of the output ...
- 393
1 vote
1 answer
77 views
Carrier phase tracking performance: Costas loop vs data aided for PSK modulated signals
I am trying to understand or find out which method for carrier phase tracking is more accurate: The use of Costas loop or the use of a known sequence of symbols(data aided). By intuition I would tend ...
- 393
-1 votes
3 answers
94 views
Can audio data be transmitted over ethernet from one SoC to an audio DSP with the help of a DMA?
I saw this on an interface diagram and was confused. I thought audio DSPs are generally connected to the SoC DDR memory via the system bus or PCIe. What are the benefits of using ethernet to transfer ...
- 1
1 vote
1 answer
76 views
Confused about the right sequence or order of receiver DSP functions
I am looking for a simple answer for a question (or questions) which may be complex ( I tried to answer this question by reading Michael's Rice book on digital communications , and I still couldn't ...
- 393
-1 votes
1 answer
63 views
spreading factor in LoRa PHY (CSS)
I wonder how the spreading factor (SF) is defined in LoRa PHY. Specifically, in other spread spectrum techniques (e.g DS, FH), we have: W = R * SF W is the (spread) bandwidth, and R is the symbol rate....
- 69
0 votes
1 answer
137 views
Boost converter ground to ground noise issue
I’ve been working on a boost converter with all the control circuitries being controlled by a microcontroller. I am facing a huge problem of noise on the ground. I have all the grounds common and when ...
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