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Archive for the Category: Digital Signal Processing
New Book Chapter
I just posted a free book chapter on the site for anyone who has subscribed. The chapter is about 80 pages long and goes into a wide range of topics related to direct digital frequency synthesis (DDS). Definitely worth a read or a place in your reference material as this is not the same DDS [...]
Also posted in Frequency Synthesis Leave a comment
Approximation for RMS
Approximation for SQRT( I2 + Q2 ) with Gaussian Noise Present When a complex signal is represented in terms of in-phase (I) and quadrature-phase (Q) components, a commonly used approximation for the signal root-mean-square (RMS) value is Assuming a large number of OFDM subcarriers in the intended application, I and Q appear to both be [...]
Also posted in Mathematics Leave a comment
Computing Data Windows Recursively
Data windows are indispensable for computing the spectral characteristics of signal waveforms that are not periodic in time. In the context of hardware-based digital signal processing, most if not all data windows are expressed in terms of fairly complex function that are not convenient for embedding in a FPGA or custom ASIC. This memo presents [...]
Also posted in Mathematics, Uncategorized Leave a comment