Embedded Systems Conference
Breaking News
Comments
Oldest First | Newest First | Threaded View
DrFPGA
User Rank
Author
Adaptive Algorithms?
DrFPGA   3/18/2014 3:45:00 PM
NO RATINGS
Can these devices be changed on the fly to implement adaptive algorithms? This could reduce power right?

Max The Magnificent
User Rank
Author
Re: Adaptive Algorithms?
Max The Magnificent   3/18/2014 3:55:33 PM
NO RATINGS
@DrFPGA: Can these devices be changed on the fly to implement adaptive algorithms?

That's a really good question -- do they support the equivalent of dynamic partial reconfiguration in a high-end FPGA?

paul.dillien
User Rank
Author
Re: Adaptive Algorithms?
paul.dillien   3/18/2014 6:56:30 PM
NO RATINGS
Hi DrFPGA

Yes, they can be changed on the fly.  Each element, such as frequency, gain or  bandwidth can be reconfigured very rapidly by simply loading a couple of bytes of new data.  That makes the devices great for software defined radio or cognitive radio systems.  Add to that the ability to depower unused elements, e.g. ADCs (if you are using external convertors), or one of the dual channels for SISO operation.  

By combining the programmable RF chips with an FPGA, such as a Zynq, provides a very capable mixed signal system with software control and hardware acceleration to process algorithms.

DrFPGA
User Rank
Author
Re: Adaptive Algorithms?
DrFPGA   3/18/2014 7:12:55 PM
NO RATINGS
Paul-

Very cool. The high end applications will be a great fit for these devices and the big SoC FPGAs. How about on the low end? Can an MCU with good low power operation modes be used? Can we do really crazy stuff like computing the setting we want to configure the part with and then change the setings as needed? 

paul.dillien
User Rank
Author
Re: Adaptive Algorithms?
paul.dillien   3/19/2014 8:21:36 AM
NO RATINGS
Hi DrFPGA

Low end applications can be served by MCUs.  In fact, the LMS7002M incorporates an on-chip microcontroller (it runs 8051 code, I think) that offloads the baseband chip from several tasks like calibration.  As I understand it, the on-chip microcontroller can also run code stored externally.

Both devices use SPI to transfer data into their chips, so if the MCU has sufficient intelligence it can look up the relevant code (say, what frequency to receive or transmit) and load that directly into the device.  That's how devices in small cells, such as femtocells, can scan the spectrum to figure out what frequencies are being used locally as part of a self-organizing network.  It's also why both devices have on-chip Received Signal Strength Indicators.



Flash Poll
Radio
LATEST ARCHIVED BROADCAST
EE Times Senior Technical Editor Martin Rowe will interview EMC engineer Kenneth Wyatt.
Like Us on Facebook

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
Special Video Section
After a four-year absence, Infineon returns to Mobile World ...
A laptop’s 65-watt adapter can be made 6 times smaller and ...
An industry network should have device and data security at ...
The LTC2975 is a four-channel PMBus Power System Manager ...
In this video, a new high speed CMOS output comparator ...
The LT8640 is a 42V, 5A synchronous step-down regulator ...
The LTC2000 high-speed DAC has low noise and excellent ...
How do you protect the load and ensure output continues to ...
General-purpose DACs have applications in instrumentation, ...
Linear Technology demonstrates its latest measurement ...
10:29
Demos from Maxim Integrated at Electronica 2014 show ...
Bosch CEO Stefan Finkbeiner shows off latest combo and ...
STMicroelectronics demoed this simple gesture control ...
Keysight shows you what signals lurk in real-time at 510MHz ...
TE Connectivity's clear-plastic, full-size model car shows ...
Why culture makes Linear Tech a winner.
Recently formed Architects of Modern Power consortium ...
Specially modified Corvette C7 Stingray responds to ex Indy ...
Avago’s ACPL-K30T is the first solid-state driver qualified ...
NXP launches its line of multi-gate, multifunction, ...