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Design of an anti-aliasing filter for a DAC
Overview Octaveforge / Matlab design script. Download: here weighted numerical optimization of Laplace-domain transfer function linear-phase design, optimizes vector error (magnitude and phase) ...
posted by Markus Nentwig on Aug 18 2012 under Matlab | Basics | Wireless 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) |
A multiuser waterfilling algorithm
Hello,this blog entry documents a code snippet for a multi-user waterfilling algorithm. It's heuristic and relatively straightforward, making it easy to implement additional constraints or rules.I rew...
posted by Markus Nentwig on Nov 5 2010 under Wireless | Communication Comments (0) |
Radio Frequency Distortion Part II: A power spectrum model
Summary This article presents a ready-to-use model for nonlinear distortion caused by radio frequenfcy components in wireless receivers and linear transmitters. Compared to the similar model pre...
posted by Markus Nentwig on Oct 11 2010 under Matlab | Wireless | Communication Comments (1) |
Understanding Radio Frequency Distortion
Overview The topic of this article are the effects of radio frequency distortions on a baseband signal, and how to model them at baseband. Typical applications are use as a simulation model or i...
posted by Markus Nentwig on Sep 26 2010 under Basics | 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) |