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Eric Jacobsen's DSP Blog
Eric Jacobsen is CEO/CTO of Anchor Hill Communications, providing consulting, engineering services and solutions for digital communication systems. His work includes R&D on signal processing algorithms, architectures, and systems at Abineau Communications, Intel's Radio Communications Laboratory, EFData/California Microwave, Honeywell, and Goodyear Aerospace, among others. He spent a lot of time in IEEE 802 standards learning schmoozing, politics, and Robert's Rules of Order. http://www.anchorhill.com
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RSS FeedFrequency-Domain Periodicity and the Discrete Fourier Transform
Introduction Some of the better understood aspects of time-sampled systems are the limitations and requirements imposed by the Nyquist sampling theorem [1]. Somewhat less understood is the periodic...
posted by Eric Jacobsen on Aug 6 2012 under DFT_FFT Comments (0) |
Time-Domain Periodicity and the Discrete Fourier Transform
Introduction The Discrete Fourier Transform (DFT) and it's fast-algorithm implementation, the Fast Fourier Transform (FFT), are fundamental tools for processing and analysis of digital signals. Whi...
posted by Eric Jacobsen on Jul 13 2012 under DFT_FFT Comments (0) |
Understanding and Relating Eb/No, SNR, and other Power Efficiency Metrics
Introduction Evaluating the performance of communication systems, and wireless systems in particular, usually involves quantifying some performance metric as a function of Signal-to-Noise-Ratio (SN...
posted by Eric Jacobsen on May 29 2012 under Wireless | Communication Comments (1) |
Some Observations on Comparing Efficiency in Communication Systems
Introduction Engineering is usually about managing efficiencies of one sort or another. One of my favorite working definitions of an engineer says, "An engineer is somebody who can do for a nickel ...
posted by Eric Jacobsen on Mar 17 2011 under Wireless | Communication Comments (0) |
Frequency Dependence in Free Space Propagation
IntroductionIt seems to be fairly common knowledge, even among practicing professionals, that the efficiency of propagation of wireless signals is frequency dependent. Generally it is believed that lo...
posted by Eric Jacobsen on May 14 2008 under Basics | Wireless | Communication Comments (4) |
Pulse Shaping in Single-Carrier Communication Systems
Some common conceptual hurdles for beginning communications engineers have to do with "Pulse Shaping" or the closely-related, even synonymous, topics of "matched filtering", "...
posted by Eric Jacobsen on Apr 10 2008 under Basics | Wireless | Communication Comments (30) |
Handling Spectral Inversion in Baseband Processing
The problem of "spectral inversion" comes up fairly frequently in the context of signal processing for communication systems. In short, "spectral inversion" is the reversal of the ...
posted by Eric Jacobsen on Feb 11 2008 under Tips and Tricks | Wireless | Communication Comments (4) |