[hpsdr] SDR Architectures

[Phil Harman]

Hi Bruce,

Thanks for your feedback.  It was not my intention to limit the suggestions to receiving only,  for sure we can apply the same philosophy to the transmitter.  For the time being we may be pushing our luck to do wideband on Rx and Tx but multiple transmitters, along the same lines as we do presently, would not be a problem.

73 Phil...VK6PH  

From: Bruce Beford 
Sent: Thursday, May 15, 2014 8:46 PM
To: hpsdr at lists.openhpsdr.org 
Subject: Re: [hpsdr] SDR Architectures

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Nice write-up Phil. Thanks for sharing your thoughts on a future path of SDR development. In your text, I read SDR as primarily "software defined receiver". I would like to see a broader "software defined radio", to include expansion capabilities in the front end hardware, including TX. In my mind, this should include not only the ability to add multiple ADCs for receive, but also multiple DACs for transmit. This would open the possibility (for example) for both transmit and receive "beam steering" using software determined phasing of a vertical antenna array for both transmit and receive. Other applications would also be possible with multiple independent transmit and receive hardware paths.

 

It's a fun time to be discussing all this, now that the available hardware (ADC, DAC, data transfer and processing power) capabilities are all catching up with the dreams!

Cheers!

Bruce

N1RX



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