Forums Update, Tips and Tricks - Please Read!

Started by stephaneb 3 months ago4 replieslatest reply 1 month ago224 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...

Preemphasis Filter Design

Started by Lucky_12 4 days ago13 replieslatest reply 2 hours ago83 views
Consider the following characteristic of a nonlinear amplifier for two different frequencies: I want to design a filter which shifts the green characteristic horizontally...

FHSS Signal Analysis.

Started by SenSen 4 days ago4 replieslatest reply 6 hours ago72 views
Hello Dear Forum Users,I am analyzing 2.4Ghz FHSS signal, sampled @40Mhz using USRP.The BW of each hop is 1Mhz.Would like to derive several parameters, based on...

'Phase drift' if oscillator doesn't go through full 360 deg rotation when mixing FIR to bandpass

Started by kevinjkrieger 1 day ago17 replieslatest reply 24 hours ago58 views
Hello all, I've just started reading and researching signal processing and the application I'm working on involves decimating samples and filtering to go from a...

Decimation by 2

Started by tomb18 4 days ago8 replieslatest reply 2 days ago99 views
I have a need to downsample a signal that is at 384 kHz down to 192kHz.  I have read that you first apply an FIR filter then you throw away 1 out of every 2 samples....

Extracting narrow-band ZigBee signals from a wide-band WiFi signal?

Started by cogwsn 2 days ago8 replieslatest reply 2 days ago38 views
Hello,I am planning the following.First sample the 20 MHz WiFi channel (WiFi channel-1 in figure).Put band pass filters (5 MHz wide) around each of the ZigBee center...

WiFi Successive Interference Cancellation : Channel Estimate for Unused Carriers ?

Started by cogwsn 2 days ago3 replieslatest reply 2 days ago42 views
Hello, I am working on SIC between WiFi(802.11g) and ZigBee(802.15.4). First I am decoding the #WiFi signal. Once decoded I have to regenerate the WiFi signal with...

Voice recognition using TMS

Started by andrecr03 6 days ago14 replieslatest reply 2 days ago65 views
Hello,My name is André, and I'm currently studying Electrical Engineering. I signed up for this forum because I have an important work to do on my holidays for...

Source coding in WiFi or LTE

Started by Sharan123 3 weeks ago7 replieslatest reply 3 days ago84 views
Hi,I am interested to know what source coding method is used in case of #WiFi or #LTE. I assume Turbo coding or LDPC are used for channel coding.Thanks,

LTE concept of TTI

Started by Sharan123 5 days ago46 views
Hello All,The concept of TTI in #LTE has always confused me. I am giving a brief understanding from a base station perspective.So, assuming BW is fixed (e.g. 20...

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