Hi, You can look into "Multirate Signal Processing" by Fedrick Harris for more details regarding CIC filter, decimators,etc..
Thanks sencen Message: 10 Date: Tue, 19 Jun 2012 09:46:43 +0800 (CST) From: signalswdm <signals...@yeah.net> To: GNURadio <discuss-gnuradio@gnu.org> Subject: [Discuss-gnuradio] Basic question about filter Message-ID: <5178d5c1.7b3.138026b9bba.coremail.signals...@yeah.net> Content-Type: text/plain; charset="gbk" Hello everyone: You see in theory there should be a low-pass filter after ADC for eliminating the image. Also after DDC there should also be a filter. But in USRP there are not such things. So do the cic filter and half band filter implement that function besides decimation?
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