Comments on: Raised cosine filter for transmit pulse shaping http://www.dsplog.com/2008/04/22/raised-cosine-filter-for-transmit-pulse-shaping/ Signal Processing for Communication Fri, 10 Feb 2012 01:03:15 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: Krishna Sankar http://www.dsplog.com/2008/04/22/raised-cosine-filter-for-transmit-pulse-shaping/#comment-93277 Krishna Sankar Sat, 07 Jan 2012 01:04:57 +0000 http://www.dsplog.com/?p=131#comment-93277 @Neeraj: We have an upconversion followed by a downconversion - and these cancel each other out. So the analysis for the passband is similar to the baseband story. I think Proakis describes that in one of the chapter's, but cant find that right now. @Neeraj: We have an upconversion followed by a downconversion – and these cancel each other out. So the analysis for the passband is similar to the baseband story. I think Proakis describes that in one of the chapter’s, but cant find that right now.

]]> By: Neeraj http://www.dsplog.com/2008/04/22/raised-cosine-filter-for-transmit-pulse-shaping/#comment-93072 Neeraj Fri, 06 Jan 2012 09:19:29 +0000 http://www.dsplog.com/?p=131#comment-93072 Hi Krishna, A very basic question. I understand how an RRC helps reduce ISI in baseband transmission where the the delay spread of individual pulses wil overlap without a pulse shaping filter. However I am unable to visualize an RRC in a wireless scenario where u wud hav a QPSK/QAM followin the RRC thereby transferrin da baseband info onto the carrier/s..If the pulses produced by the RRC filter are not the ones being actually transmitted, how does an RRC filter help?.. I understand that this might be a silly question but its really bugging me. Would really appreciate an answer.. Great blog btw!.. Thanks, Neeraj Hi Krishna,

A very basic question. I understand how an RRC helps reduce ISI in baseband transmission where the the delay spread of individual pulses wil overlap without a pulse shaping filter. However I am unable to visualize an RRC in a wireless scenario where u wud hav a QPSK/QAM followin the RRC thereby transferrin da baseband info onto the carrier/s..If the pulses produced by the RRC filter are not the ones being actually transmitted, how does an RRC filter help?..

I understand that this might be a silly question but its really bugging me. Would really appreciate an answer..

Great blog btw!..

Thanks,
Neeraj

]]> By: Krishna Sankar http://www.dsplog.com/2008/04/22/raised-cosine-filter-for-transmit-pulse-shaping/#comment-27332 Krishna Sankar Tue, 27 Apr 2010 00:21:21 +0000 http://www.dsplog.com/?p=131#comment-27332 @vishram: You can post your queries in the comments section. I will try answer to the best of my understanding @vishram: You can post your queries in the comments section. I will try answer to the best of my understanding

]]> By: vishram http://www.dsplog.com/2008/04/22/raised-cosine-filter-for-transmit-pulse-shaping/#comment-26929 vishram Fri, 23 Apr 2010 21:26:51 +0000 http://www.dsplog.com/?p=131#comment-26929 I need to implement following paper in matlab..please help mee...its urget.. http://www.google.co.in/url?sa=t&source=web&ct=res&cd=1&ved=0CBgQFjAA&url=http%3A%2F%2Fieeexplore.ieee.org%2Fiel1%2F31%2F504%2F00009919.pdf%3Farnumber%3D9919&ei=ug_SS5HtHor46QOAn-y8Dw&usg=AFQjCNFci8QpmcOlT7_HPGYQbiEMTHB2RQ&sig2=vI1G_fj02WSthdf7wXsh7A I need to implement following paper in matlab..please help mee…its urget..

http://www.google.co.in/url?sa=t&source=web&ct=res&cd=1&ved=0CBgQFjAA&url=http%3A%2F%2Fieeexplore.ieee.org%2Fiel1%2F31%2F504%2F00009919.pdf%3Farnumber%3D9919&ei=ug_SS5HtHor46QOAn-y8Dw&usg=AFQjCNFci8QpmcOlT7_HPGYQbiEMTHB2RQ&sig2=vI1G_fj02WSthdf7wXsh7A

]]> By: Krishna Sankar http://www.dsplog.com/2008/04/22/raised-cosine-filter-for-transmit-pulse-shaping/#comment-24296 Krishna Sankar Mon, 29 Mar 2010 01:49:17 +0000 http://www.dsplog.com/?p=131#comment-24296 @pawan: Sorry, I have not tried modeling MC-CDMA systems @pawan: Sorry, I have not tried modeling MC-CDMA systems

]]> By: Krishna Sankar http://www.dsplog.com/2008/04/22/raised-cosine-filter-for-transmit-pulse-shaping/#comment-24232 Krishna Sankar Sun, 28 Mar 2010 09:06:25 +0000 http://www.dsplog.com/?p=131#comment-24232 @yasmine: Sorry, did not understand your query @yasmine: Sorry, did not understand your query

]]> By: yasmine http://www.dsplog.com/2008/04/22/raised-cosine-filter-for-transmit-pulse-shaping/#comment-23726 yasmine Sat, 20 Mar 2010 21:00:05 +0000 http://www.dsplog.com/?p=131#comment-23726 hi, what about raised cosine hilbert ist true that raised cosine hilbert=raised cosine filter+ analytic signal? thanks hi,

what about raised cosine hilbert ist true that
raised cosine hilbert=raised cosine filter+ analytic signal?

thanks

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