DSP
INFORMATIONS
DSP
INFORMATIONS
Digital Signal Processing
Have you noticed how everything is becoming digital these days -- DSP filters, DSP modems, DSP transcievers and more -- and for good reason. Digital representation of signals over their analog counterparts have many advantages:
Digital Signal Processing is so pervasive in everything an amateur radio operator does and it is becoming an important tool. These web pages are designed to introduce amateur experimenters to DSP. They will point you to the many resources on the web and provide a forum for amateur DSP experimentation.
The purpose of these web pages are to introduce the prospective experimenter to the topic of DSP.
If you are ready, read on . . . or jump to the topics by clicking below.
One good place to start is The ARRL Handbook. It has an entire chapter on DSP written by Jon Bloom, KE3Z. The chapter explains DSP Fundamentals to DSP Hardware and Development Tools. It is a good place to start and get an overview on the extensive topic of DSP. Hopefully, after reading the chapter you will have a good idea of what DSP is and how it works.
A second place to start is text books. Texts are excellent sources of information on DSP. They range from introductory to advanced levels. Texts can explain various topics of DSP chapter by chapter giving you step by step instruction on DSP. Here is a biblography of DSP texts.
Finally, there are several articles written about DSP in QST, QEX, Ham Radio, and Communications Quarterly.
For starters, there is a news group entitled comp.dsp. There is a comp.dsp FAQ available in HTML and text form at http://www.bdti.com/faq/dsp_faq.htm.
Next stop is the DSP Internet Resource List available at http://www.cera2.com/dsp.htm.
Hopefully these sites will get you started leaping from one site to the next and answering a few more questions you may have.
There are a number of ways: commercial equipment, evaluation modules or starter kits, and building a kit.
Commerial units include DSP Filters and Modems. Some commercial manufactures and their products are:
There are also a number of evaluation modules or starter kits (no assembly required) that chip manufactures produce that allow prospective developers (and experimenters) to explore the capabilities of their DSP chips. These evaluation modules have become very popular with amateurs experimenting with DSP because of their low cost (US$99.00 to US$150.00). Amateurs have produced a tremendous amount of software for these modules that perform functions from filters to modems. A listing of software by unit and function are given below. The evaluation modules include:
There are also kits developed by amateurs. They include:
There has been and continues to be a great interest in DSP technology as it is applied to Amateur Radio. DSP filters and modems continue to be the most popular functions to implement. Here begins a discussion of the various DSP chips that are available, which platforms utilize them, and where to locate software.
DSP chips are dedicated microprocessors that implement very quickly mathematical functions related to signal processing. Below are major DSP chip manufactures and the associated platforms that utilize the chip. In this manner you can see how a particluar chip stands up to the others in popularity and functionality.
SM5BSZ Morse code vs SS
Join in A DSP based Receiver Project with Applications for Weaksignal and Microwaves by the G.N.O.M.E.
KK7KA with his views on DSP and EME
DL4MEA with weaksignal information
Receiver Concepts
Information on the R1/R2 DC Receiver boards by KK7B.
KL7NA with a R2 board driving a Motorola DSP board.
Sharc_R2 Based Digital I/Q RF Receiver Project by F1OAT.
More helpful Information by K0JD.
JA9MAT on R2 applications and QRPDSP for RX and TX by DL9AN
From DSP to hard ware and beyond/
High Performance Single Signal DC receiver by KL7NA
A Spectral and Temporal Analysis Receiver for Advanced SETI
Ultra Narrow Band Techiques
QRP and Weaksignal by SM6LKM
Simplified High Frequency Tuner And Tuning Method
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