Description:
Digital Signal Processing using computers.
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Multirate filter
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Hi everybody! I'm working on a UWB radar and i have an analog front end that samples the input signal in a nonuniform way. For the reconstruction filter i would use a nonuniform reconstruction algorithm from IEEE transaction on signal processing.These are links : [link]... more »
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Guard Interval removal methods
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hi all! i'm currently working on my thesis about FFT windowing.. but i'm a little short of ideas on how to remove the cyclic prefix components in the receiver.. i can't seem to find a literature that points specifically on this issues.. and one more thing, does timing synchronization is relevant on this problem?... more »
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MPEG Audio layer 2 for SHARC processors
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Hello, [link] At the page 27 of this presentation have found: --- Available algorithms (factory mask-programmed) ‹ PCM ‹ Dolby Digital*, Dolby Digital EX2*, Dolby Pro Logic IIx* ‹ DTS 5.1*, DTS ES*, DTS Neo:6*, DTS 96/24* ‹ SRS Focus* ‹ MPEG2 AAC LC ‹ MP3... more »
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ITU J.83 Annex A Modulator Question
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I’m working on an FPGA implementation of an ITU J.83 Annex A modulator; I know this is kind of re-inventing the wheel . . . but I wanted to see if I could do it. Well I’ve finished the modulator and it’s working great with our demodulator for 16QAM, 32QAM, and 128QAM. What I can’t figure out is that for 64QAM and 256QAM I can’t get our... more »
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encoding ldpc
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Hi, I'm a new poster to comp.dsp. Recently I've been digging in to LDPCs out of general curiosity and after reading several papers and trying out some techniques, I have a question about encoding LDPCs. There are two methods that seem to have the most general application, but I have not had success with either method.... more »
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Repetition in Rate Matching
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Hi All, I am looking into Rate Matching in UMTS. In de-Rate Matching (if this is the correct term), punctured bits I believe are replaced with 0. For repetition bits, if the inputs to the de-Rate Matching are soft bits (LLR), how do we combine the repeat bits or just discard one of the repeats? If we combine them, how do we do it, is it just a simple... more »
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Review of a book
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Hi All Does anybody have used the following book? Underwater Acoustics: A Linear Systems Theory Approach by Lawrence J. Ziomek. Is it worth buying it??? Many thanks. Chintan
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IEEE Students' Technology Symposium 2010 - Call for Papers
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IEEE TechSym 2010 [link] IEEE Students' Technology Symposium 2010 Indian Institute of Technology, Kharagpur || Kharagpur 721 302 India 3-4 April 2010 CALL FOR PAPERS "Logic will get you from A to B. Imagination will take you everywhere."---Albert Einstein Mind of a student should be free to explore the universe of knowledge... more »
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Is complex-conjugation an LTI operation?
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Good morning all, This conundrum may be due to it being too early in the day for me to think clearly, so please tell me where I've gone wrong! It would appear to me that complex conjugation would satisfy the properties of linearity and time-invariance, and therefore could be categorised as an LTI operation. However, clearly it creates... more »
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