Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

Matlab+ FIR filter that compensates for the ‘sinx/x’ effect

Status
Not open for further replies.
C

cenation

Newbie level 4
Joined
Mar 21, 2013
Messages
6
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,317
Can anyone help me with this?

I need to design a linear-phase FIR filter that compensates for the ‘sinx/x’ effect with a peak approximation error of -40 dB on the frequency band of
[0, 0.8π] radian.
 

It is not clear for me if the signal has a sinx/x shape in the time domain or in the frequency domain.

If you wish attenuate the side lobules with a low pass filter use

y is you signal in the time domain
fl=100; % LPF length
fbe=[0 0.1 0.2 1]; damps=[1 1 0 0 ]; % design of LPF parameters, analyze with 'doc firpm'
b=firpm(fl,fbe,damps); % create LPF impulse response
x3=2*filter(b,1,y); % LPF and scale downconverted signal

you will find abundant information in this practical book attached.

Regards, Daniel
 

Attachments

  • SoftwareReceiverDesign.pdf
    6.5 MB · Views: 148
Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top