XTRX

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Jun 17, 2016

Tech Specs for the XTRX

A number of you requested more technical information on the board. Below are the most important parameters of XTRX. We will provide a more detailed view into each of these in followup posts.

  • 2×2 MIMO Lime Microsystems LMS7002M FPRF frontend with 100 kHz – 3.8 Ghz tuning range
  • miniPCIe form factor (30×51 mm).
  • <10 us bus latency, stable over time.
  • Up to 160MSps@12bit per MIMO channel or (theoretically) even 240 MSps @8 bit per MIMO channel in 2×2 MIMO mode (8 Gbit/s total bus bandwidth).
  • GPS-disciplined clock with initial 280 ppb stability, <10 ppb after GPS lock.
  • Programmable sampling rate (30.72 MHz reference clock)
  • Software controlled switch for Rx/Tx antennas band selection. No more RF cable switching.
  • Multiple XTRX boards can be synchronized with each other to form a massive MIMO system.
  • Low bus latency allows offloading parts of DSP processing to the XTRX onboard FPGA.

Why PCIe?..and not USB3 like in most inexpensive SDRs? Like with the UmTRX line, we were aiming for something that is easy to start playing/prototyping that easily translates to a commercial design. From our experience, a lot of production systems feature a PCIe or miniPCIe bus which is robust, low latency and high bandwidth – a perfect choice for a high performance embedded SDR (Look at the bus specs above, you can only get that with PCIe) plus we don’t think USB is a solid mechanical connector for a field device requiring months of unattended operation.

If you don’t have a miniPCIe or PCIe slot,  depending on interest we’re planning an accessory to make it easy for everyone to use this board everywhere.

Price?  Expect the same ballpark as a BladeRF SDR. As mentioned in the first post, our aim is to increase accessibility. Embedded devices usually cost premium for their robustness and durability and are out of reach for most users. With XTRX we’re aiming at bringing this industrial quality to masses.

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Product Choices

$260

XTRX

Get an XTRX revision 4 board. Does not include any cables, antennas, or adapter boards.


$515

XTRX Deluxe Bundle

Get an XTRX revision 4 board as well as an Antennas + Cables set, a PCIe x2 + Front End Adapter, and a USB 3 Adapter with Aluminum Enclosure (see below for details). Also comes with four extra U.FL-to-U.FL cables and four extra U.FL-to-SMA-male cables.


$59

Antennas + Cables

A full complement of cables and antennas for your XTRX, including four RF antennas (95 mm, 2 dBi, SMA male, GSM/3G/LTE 880 - 960 MHz, 1710 - 1990 MHz), one GPS antenna, and five cables.


$79

USB 3 Adapter with Aluminum Enclosure

This adapter converts your XTRX from Mini PCIe to USB 3 and comes with an aluminum enclosure designed specifically for XTRX. The adapter has three status LEDs, a micro USB 3 port, one SMA connector for the GPS antenna, four SMA connectors for the MIMO Tx/Rx antenna pairs, a micro SIM card slot, and a slot for a GPIO FPC cable. Comes with a USB cable and all RF cables for internally connecting an XTRX to the SMA connectors. Does not include an XTRX, antennas, or FPC cable.


$99

PCIe x2 + Front End Adapter

This PCIe card securely holds an XTRX board (not included) so it can be used in a standard PCIe x4 slot. It includes an RF front end with a LNA and PA for up to 100 mW output on each channel. A TDD switch is incorporated for applications like TDD LTE. You can bypass the front end by attaching cables directly to XTRX. This adapter achieves the full 10 Gbit/s raw bus bandwidth and can be plugged into x4/x8/x16 PCIe slots. A six-pin JTAG connector makes it easy to program and debug the FPGA. A micro SIM card slot is also present.


$2,900

XTRX PCIe Octopack

This single PCIe card comes loaded with eight (8!) removable XTRX boards, metal installation brackets, enough cables for all GPS and MIMO Tx/Rx ports, and a special board for synchronizing all eight XTRX boards.


$1,900

XTRX Beta Tester

Here's your chance to get an XTRX board as soon as possible. We'll send you an XTRX revision 3 board as soon as the campaign reaches its funding goal and we'll follow up with a production version (revision 4) as soon as they come off the assembly line.

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Credits

Fairwaves

We are a vertically integrated vendor of cellular equipment focused on the needs of emerging markets. We are developing, manufacturing, deploying, and operating turn-key cellular network solutions including radio equipment, towers, power and backhaul all the way to a core network and SS7 interconnect. Our team has been building software-defined radios and systems based on them since 2009 and is well known for its ClockTamer, UmTRX, and UmSITE products.


Alexander Chemeris

CTO

Sergey Kostanbaev

Software & Firmware Development

Andrey Sviyazov

Hardware Design

Albert Gardiner

CEO

Andrey Bakhmat

Marketing

Andy Avtushenko

Manufacturing

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