From f0a3eef8e8445a668a9f76559359fec13fc7fa20 Mon Sep 17 00:00:00 2001 From: andreas128 Date: Tue, 25 Oct 2016 10:53:50 +0200 Subject: fixed generate-filter.py path --- scenarios.tex | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/scenarios.tex b/scenarios.tex index a63cdbd..03e7b8d 100644 --- a/scenarios.tex +++ b/scenarios.tex @@ -90,7 +90,7 @@ This example also shows more options that the example for the file output: \item \texttt{firfilter enabled=0} can be set to 1 to enable an additional FIR filter to improve the spectrum mask. This filter needs a file containing the filter taps, which can be generated using - \texttt{ODR-DabMux/doc/fir-filter/generate-filter.py}. An example taps + \texttt{ODR-DabMod/doc/fir-filter/generate-filter.py}. An example taps file is also available in this folder. \item \texttt{master\_clock\_rate=32768000} sets the USRP internal clock to a multiple of $2048000$, which is required if we want to use the native -- cgit v1.2.3 From 1efc64de1da15359f753f93a960988559fdd6fc5 Mon Sep 17 00:00:00 2001 From: "Matthias P. Braendli" Date: Fri, 10 Feb 2017 12:17:57 +0100 Subject: Mention SoapySDR --- scenarios.tex | 15 ++++++++++++--- 1 file changed, 12 insertions(+), 3 deletions(-) diff --git a/scenarios.tex b/scenarios.tex index 03e7b8d..b740612 100644 --- a/scenarios.tex +++ b/scenarios.tex @@ -144,7 +144,7 @@ it in steps of $3$dB or smaller while measuring the output signal, until the correct power is reached. \subsubsection{Other Hardware} -ODR-DabMod supports other radio interfaces using either standard output, or via +ODR-DabMod supports other radio interfaces using SoapySDR or through standard output, or via a fifo -- the latter must be created prior to runtime with the \texttt{mkfifo} command. Due to limitations in the UHD driver library, \texttt{/dev/stdout} will only function correctly if ODR-DabMod is configured at compilation time with the @@ -154,7 +154,15 @@ following argument: --disable-output-uhd \end{lstlisting} -ODR-DabMod has been tested working with HackRF from Great Scott Gadgets on i386 and +SoapySDR\footnote{\url{https://github.com/pothosware/SoapySDR/wiki}} is a vendor +neutral and platform independent library to drive SDR devices. It can be used to +drive the LimeSDR board and the HackRF from Great Scott Gadgets. Installation +dependencies are shown in the \texttt{INSTALL} file, and an example +configuration is in \texttt{doc/example.mux}. The TX Gain setting should be +chosen inside the valid range for the device being used. This range can be shown +by calling \texttt{SoapySDRUtil --probe}. + +ODR-DabMod has been tested working with HackRF on i386 and x86 architectures.\footnote{HackRF has not been tested to any degree of success with ARM-based computers at this time as they are not (yet) capable of resampling to the required higher rates as the process is highly CPU intensive.} @@ -170,7 +178,8 @@ it is important to pay close attention to the specifications. The local oscillat phase noise performance, and the dynamic range (due to the heavy use of the band) are both particularly important. -To use HackRF, the output of ODR-DabMod must be set (in the configuration file) to +To use the HackRF through stdout (i.e.\ without SoapySDR), +the output of ODR-DabMod must be set (in the configuration file) to produce 8-bit signed integers, rather than the default complex floats. HackRF has selectable baseband filters, however the lowest filter setting ($1.75$MHz) does not provide adequate image rejection at the native sampling rate of -- cgit v1.2.3