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Forums Update, Tips and Tricks - Please Read!

Started by stephaneb 6 years ago16 replieslatest reply 1 month ago2155 views
It's been a few months since the launch of the new forums.  Here are a few thoughts. The thumbsup and beer buttons    If there is one thing that could have a...

Rabbit Ear Artifact At Image Frequency of Complex Downconverted Pulse Train

Started by JohnnyM 3 days ago4 replieslatest reply 5 hours ago76 views
Hello, I have created a Matlab simulation of a series of band-limited sinusoidal pulses indexed 1:N, spaced evenly in "slow time" each with a starting phase that...

GNURadio BPSK Position Costas Loop and Clocksync

Started by RonWei 5 days ago6 replieslatest reply 1 day ago85 views
Hello folks,I'm having a problem understanding GNU Radio and the BPSK examples right now.In all examples in the www, a clock sync block is used first after reading...

Calculating optimal loop point in audio sample

Started by smjedison 3 weeks ago10 replieslatest reply 2 weeks ago109 views
(Disclaimer, I'm self-taught and mostly a beginner when it comes to DSP) Hi! I've recently been working on a problem to find the optimal loop point in an audio...

mitigating phase shift

Started by Detlef _A 2 weeks ago5 replieslatest reply 2 weeks ago111 views
Hi, I want to PLL on the line voltage, here in Europe 50Hz. I have a noisy signal and i use a prefilter with a complex pole pair at 0.999*exp(+/- j*2*pi*50/10000)....

IQ mag: Integer approximation of square root of the sum of two squares

Started by Robmar 1 month ago23 replieslatest reply 3 weeks ago163 views
Anyone knows the name of this algorithm and a fast and also integer alternative?Int16 Mag(int16 i, int16 q)(If abs(i) > abs(q)  Return abs(i) + abs(q) / 4;Else ...

Power Spectral Density PSD° of OFDM signals

Started by Ayicha 3 weeks ago11 replieslatest reply 3 weeks ago105 views
Hello guys,I'm quite new in OFDM techniques and i would really appreciate if someone could help me. Here is my problem. Assume i have a binary stream converted into...

math/money reasoning issue, Not a spam Please

Started by kaz 4 weeks ago6 replieslatest reply 3 weeks ago127 views
I am lost in reasoning the following joke:Posted on Quora by Lynda ClarkeTHE £50 pound noteIt's a slow day in the town and the streets are deserted. Times are...

How do I produce a covariance matrix from IQ samples?

Started by asterixogalues 1 month ago5 replieslatest reply 4 weeks ago116 views
Dear Colleagues,I'm working with BLE AoA Localization. My problem is: What to do exactly with IQ(in phase-quadrature signals) information from an antenna array in...

Recent SPAM posts in the Forums

Started by stephaneb 1 month ago185 views
Hello, just a quick note to let you know that we are fully aware of the spam posts that made it into this forum lately, despite our spam filtering system.  The...

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