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Jun 16, 2017

Lime Adaptive Digital Predistortion (LimeADPD)

PA output spectrum with and without LimeADPD

We’re excited to announce that Lime Micro have open sourced their implementation of adaptive digital predistortion (ADPD) for PA linearisation. This can be used with the LimeNET Base Station and other platforms based around the 4x4 MIMO LimeSDR-QPCIe board, to help meet wireless regulatory specifications, while also improving power efficiency and reducing running costs.

The approach taken uses an indirect learning architecture and an algorithm that is based on modelling a nonlinear system by complex valued memory polynomials. Detailed information on the structure and associated equations can be found over on the Myriad-RF wiki. The implementation for LimeSDR-QPCIe is also covered there, along with measured results for two test cases. The source code has also been published to GitHub under the Apache 2.0 licence.

Andrew and the LimeNET Team

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$1,899

LimeNET Mini - Early Bird

A high-performance mini PC with an integrated and shielded internal LimeSDR USB micro Type-B, U.FL cables, and antennas. This hardware is fully qualified for compatibility with the LimeNET Ubuntu app store. Other than reduced pricing (save $300) and limited quantity (only five available), this early bird batch is the same as the regular LimeNET Mini with integrated LimeSDR.


$2,199

LimeNET Mini

A high-performance mini PC with an integrated and shielded internal LimeSDR USB micro Type-B, U.FL cables, and antennas. This hardware is fully qualified for compatibility with the LimeNET Ubuntu app store. Save $400 off the post-campaign retail price of $2,599.


$1,599

LimeNET Mini (without LimeSDR)

A high-performance mini PC without an internal LimeSDR, U.FL cables, or antennas. This hardware is fully qualified for compatibility with the LimeNET Ubuntu app store provided you have your own LimeSDR for external use. (NOTE: Those who purchased a LimeSDR before the launch of the LimeNET campaign get a $400 discount on the version of the LimeNET Mini without the integrated LimeSDR. To claim the $1,199 price, place your order by July 13, 2017 and include your LimeSDR order number in the order comments. Your price will be adjusted shortly after placing your LimeNET Mini order.)


$2,699

LimeNET Enterprise

A high-performance PC with an external LimeSDR with Aluminum Kit from the original LimeSDR campaign. This hardware is fully qualified for compatibility with the LimeNET Ubuntu app store. Save $300 off the post-campaign retail price of $2,999. (NOTE: There is an $800 discount for a version without the LimeSDR with Aluminum Kit, but it is available only to those who purchased a LimeSDR with Aluminum Kit from the original LimeSDR campaign before the launch of the LimeNET campaign. To qualify, please place your order by July 13, 2017 and include your original order number in the order comments. The $800 discount will be applied shortly after your order is placed).


$1,899

LimeNET Enterprise (without LimeSDR)

A high-performance PC that is fully qualified for compatibility with the LimeNET Ubuntu app store provided you have your own LimeSDR for external use.


$17,250

LimeNET Base Station - Early Bird

This is a steeply discounted combination of the LimeNET Core + LimeNET Amplifier Chassis. This is all you need to set up your own cellular network!


$21,250

LimeNET Base Station

This is a steeply discounted combination of the LimeNET Core + LimeNET Amplifier Chassis. This is all you need to set up your own cellular network!


$7,699

LimeNET Core

A top-of-the-line gaming PC with an integrated LimeSDR QPCIe board. As the name suggests, it is the core of the LimeNET Base Station, but you can also get it separately for desktop development or integration into your own system.


$13,199

LimeNET Amplifier Chassis

Amplifier Module for long range connectivity features: Set of two (MIMO): 10 W RF Output Power Amplifier + Duplexer + Antenna Your choice of frequency band (700 MHz, 1.8 GHz, 2.6 GHz, 3.5 GHz) Thick monolithic aluminum body


$2,599

LimeSDR QPCIe

The latest addition to the LimeSDR family! Double the capacity (4x4 MIMO) of the original LimeSDR PCIe, this board is at the heart of the LimeNET Core and, by extension, the LimeNET Base Station.

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Credits

Lime Microsystems

Working toward the democratization of wireless communication through an open source ideology.


Ebrahim Bushehri

Jessica Gillingham

Andrew Back

Zack Tamosevicius

Karolis Kiela

Ignas Skudrickas

Alex Gross

Jurij Francuzov

Lexi Hatziharalambous

Nayl Dsouza

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