[Discuss-gnuradio] Complete USRP DDC Frequency Response Analysis
Dear Friends, Attached is a complete MATLAB based USRP DDC frequency response Analysis figures. The USRP DDC decimation rate was 64. The CIC filter response (decimation =32), HBF response (decimation =2) and cascaded CIC + HBF (total decimation =64) response figures are attached. The MatLab source file used in this analysis is also attached. I hope this is a useful work. Regards, Firas, http://www.nabble.com/file/8500/%280%20-%2032%29MHz%29%20CIC%20Frequency%20Response%20%28CIC%20decimation%20%3D32%29.JPG (0 - 32)MHz) CIC Frequency Response (CIC decimation =32).JPG http://www.nabble.com/file/8501/%280%20-%202%29MHz%29%20CIC%20Frequency%20Response%20%28decimation%20%3D32%29.JPG (0 - 2)MHz) CIC Frequency Response (decimation =32).JPG http://www.nabble.com/file/8502/Useful%20Band%20%280%20-%201%29MHz%29%20%20HBF%20Frequency%20Response.JPG Useful Band (0 - 1)MHz) HBF Frequency Response.JPG http://www.nabble.com/file/8503/Useful%20Band%20%280%20-%201%29MHz%29%20CIC%20%2B%20HBF%20Frequency%20Response%20%28decimation%20%3D64%29.JPG Useful Band (0 - 1)MHz) CIC + HBF Frequency Response (decimation =64).JPG http://www.nabble.com/file/8504/Full%20Band%20%280%20-%2032%29MHz%29%20USRP%20DDC%20Frequency%20Response%20%28decimation%20%3D64%29.JPG Full Band (0 - 32)MHz) USRP DDC Frequency Response (decimation =64).JPG http://www.nabble.com/file/8505/Useful%20Band%20%280%20-%201%29MHz%29%20USRP%20DDC%20Frequency%20Response%20%28decimation%20%3D64%29.JPG Useful Band (0 - 1)MHz) USRP DDC Frequency Response (decimation =64).JPG The MATLAB m File used to generate the above figures:- http://www.nabble.com/file/8506/usrpddc.m usrpddc.m -- View this message in context: http://www.nabble.com/Complete-USRP-DDC-Frequency-Response-Analysis-tf3773947.html#a10671057 Sent from the GnuRadio mailing list archive at Nabble.com. ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Complete USRP DDC Frequency Response Analysis
Hi, Thank you very much for your help. Can you post the output of your matlab program for 250 total decimation? I would do it myself with your m file, but I don't have matlab. Thanks, Hans - Original Message - From: Eng. Firas [EMAIL PROTECTED] To: Discuss-gnuradio@gnu.org Sent: Thursday, May 17, 2007 12:47 PM Subject: [Discuss-gnuradio] Complete USRP DDC Frequency Response Analysis Dear Friends, Attached is a complete MATLAB based USRP DDC frequency response Analysis figures. The USRP DDC decimation rate was 64. The CIC filter response (decimation =32), HBF response (decimation =2) and cascaded CIC + HBF (total decimation =64) response figures are attached. The MatLab source file used in this analysis is also attached. I hope this is a useful work. Regards, Firas, http://www.nabble.com/file/8500/%280%20-%2032%29MHz%29%20CIC%20Frequency%20Response%20%28CIC%20decimation%20%3D32%29.JPG (0 - 32)MHz) CIC Frequency Response (CIC decimation =32).JPG http://www.nabble.com/file/8501/%280%20-%202%29MHz%29%20CIC%20Frequency%20Response%20%28decimation%20%3D32%29.JPG (0 - 2)MHz) CIC Frequency Response (decimation =32).JPG http://www.nabble.com/file/8502/Useful%20Band%20%280%20-%201%29MHz%29%20%20HBF%20Frequency%20Response.JPG Useful Band (0 - 1)MHz) HBF Frequency Response.JPG http://www.nabble.com/file/8503/Useful%20Band%20%280%20-%201%29MHz%29%20CIC%20%2B%20HBF%20Frequency%20Response%20%28decimation%20%3D64%29.JPG Useful Band (0 - 1)MHz) CIC + HBF Frequency Response (decimation =64).JPG http://www.nabble.com/file/8504/Full%20Band%20%280%20-%2032%29MHz%29%20USRP%20DDC%20Frequency%20Response%20%28decimation%20%3D64%29.JPG Full Band (0 - 32)MHz) USRP DDC Frequency Response (decimation =64).JPG http://www.nabble.com/file/8505/Useful%20Band%20%280%20-%201%29MHz%29%20USRP%20DDC%20Frequency%20Response%20%28decimation%20%3D64%29.JPG Useful Band (0 - 1)MHz) USRP DDC Frequency Response (decimation =64).JPG The MATLAB m File used to generate the above figures:- http://www.nabble.com/file/8506/usrpddc.m usrpddc.m -- View this message in context: http://www.nabble.com/Complete-USRP-DDC-Frequency-Response-Analysis-tf3773947.html#a10671057 Sent from the GnuRadio mailing list archive at Nabble.com. ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.467 / Virus Database: 269.7.1/807 - Release Date: 5/16/2007 6:05 PM -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Complete USRP DDC Frequency Response Analysis
Dear Hans, Attached is the graphs you requested for USRP decimation =250. Regards, Firas http://www.nabble.com/file/8515/%5B0%201%5DMHz%2C%20decimation%3D250%2C%20CIC%2C%20HBF%2C%20CIC%2BHBF%20Response.JPG [0 1]MHz, decimation=250, CIC, HBF, CIC+HBF Response.JPG http://www.nabble.com/file/8516/%5B0%2032%5DMHz%2C%20decimation%3D250%2C%20USRP%20DDC%20Response.JPG [0 32]MHz, decimation=250, USRP DDC Response.JPG http://www.nabble.com/file/8517/%5B0%201%5DMHz%2C%20decimation%3D250%2C%20USRP%20DDC%20Response.JPG [0 1]MHz, decimation=250, USRP DDC Response.JPG Hans Glitsch wrote: Hi, Thank you very much for your help. Can you post the output of your matlab program for 250 total decimation? I would do it myself with your m file, but I don't have matlab. Thanks, Hans - Original Message - From: Eng. Firas [EMAIL PROTECTED] To: Discuss-gnuradio@gnu.org Sent: Thursday, May 17, 2007 12:47 PM Subject: [Discuss-gnuradio] Complete USRP DDC Frequency Response Analysis Dear Friends, Attached is a complete MATLAB based USRP DDC frequency response Analysis figures. The USRP DDC decimation rate was 64. The CIC filter response (decimation =32), HBF response (decimation =2) and cascaded CIC + HBF (total decimation =64) response figures are attached. The MatLab source file used in this analysis is also attached. I hope this is a useful work. Regards, Firas, http://www.nabble.com/file/8500/%280%20-%2032%29MHz%29%20CIC%20Frequency%20Response%20%28CIC%20decimation%20%3D32%29.JPG (0 - 32)MHz) CIC Frequency Response (CIC decimation =32).JPG http://www.nabble.com/file/8501/%280%20-%202%29MHz%29%20CIC%20Frequency%20Response%20%28decimation%20%3D32%29.JPG (0 - 2)MHz) CIC Frequency Response (decimation =32).JPG http://www.nabble.com/file/8502/Useful%20Band%20%280%20-%201%29MHz%29%20%20HBF%20Frequency%20Response.JPG Useful Band (0 - 1)MHz) HBF Frequency Response.JPG http://www.nabble.com/file/8503/Useful%20Band%20%280%20-%201%29MHz%29%20CIC%20%2B%20HBF%20Frequency%20Response%20%28decimation%20%3D64%29.JPG Useful Band (0 - 1)MHz) CIC + HBF Frequency Response (decimation =64).JPG http://www.nabble.com/file/8504/Full%20Band%20%280%20-%2032%29MHz%29%20USRP%20DDC%20Frequency%20Response%20%28decimation%20%3D64%29.JPG Full Band (0 - 32)MHz) USRP DDC Frequency Response (decimation =64).JPG http://www.nabble.com/file/8505/Useful%20Band%20%280%20-%201%29MHz%29%20USRP%20DDC%20Frequency%20Response%20%28decimation%20%3D64%29.JPG Useful Band (0 - 1)MHz) USRP DDC Frequency Response (decimation =64).JPG The MATLAB m File used to generate the above figures:- http://www.nabble.com/file/8506/usrpddc.m usrpddc.m -- View this message in context: http://www.nabble.com/Complete-USRP-DDC-Frequency-Response-Analysis-tf3773947.html#a10671057 Sent from the GnuRadio mailing list archive at Nabble.com. ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.467 / Virus Database: 269.7.1/807 - Release Date: 5/16/2007 6:05 PM -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio -- View this message in context: http://www.nabble.com/Complete-USRP-DDC-Frequency-Response-Analysis-tf3773947.html#a10676455 Sent from the GnuRadio mailing list archive at Nabble.com. ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
