XTRX

A high-performance SDR in a mini PCIe form factor

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Features & Specifications

  • RF Chipset: Lime Microsystems LMS7002M FPRF
  • FPGA Chipset: Xilinx Artix 7 35T
  • Channels: 2 × 2 MIMO
  • Tuning Range: 30 MHz - 3.8 GHz
  • Rx/Tx Range:
    • 10 MHz - 3.7 GHz
    • 100 kHz - 3.8 GHz with signal level degradation
  • PCIe Bandwidth:
    • PCIe x2 Gen 2.0: 8 Gbit/s
    • PCIe x1 Gen 2.0: 4 Gbit/s
    • PCIe x1 Gen 1.0: 2 Gbit/s
  • Sample Rate: ~0.2 MSPS to 120 MSPS
  • Reference clock:
    • Frequency: 26 MHz
    • Stability: <10 ppb stability after GPS/GNSS lock, 500 ppb at start up
  • Form Factor: full-size miniPCIe (30 × 51 mm)
  • Bus Latency: <10 µs, stable over time
  • Synchronization: synchronize multiple XTRX boards for massive MIMO
  • GPIO: 4 lines @ miniPCIe connector, 3 lines @ FPC edge connector
  • Accessories: miniPCIe-USB3 converter, miniPCIe-PCIe converter, etc

Project Updates


Oct 04, 2017

GRCon’17 Slides

Check out slides from our presentation at the GNU Radio Conference 2017 and many other SDR related talks at the GNU Radio Conference 2017. Read the full update.


Sep 28, 2017

XTRX Testing on ARM

A few people asked us about ARM support and most of them were interested in NVidia Tegra, so we grabbed a NVidia Jetson TK1 development kit for testing. Simple cross-compilation of the driver gives us 22 MSPS right away. Read the full update.


Sep 17, 2017

XTRX Prototype Update

Life of a hardware company is never easy. Every error in hardware leads to significant amounts of lost time and money. You can’t just roll-out a hotfix to fix an issue. Which is why we’re taking a rigorous approach to testing our hardware before releasing it to the public. But today’s update is not about testing. Read the full update.


Aug 10, 2017

XTRX Software Status Update

Most of the updates so far were related to hardware design progress, but hardware is nothing without software, so it’s time for a software update. Sergey has been putting massive amount of work into making sure XTRX software is high performance, flexible and stable. And making sure all most popular applications are supported. Read the full update.


Aug 03, 2017

GRCon’17 and XTRX rev3 Ready for Prototyping

Planning to attend GRCon’17? Drop us a message if you want to meet, or just find us there to chat! Read the full update.


Jun 13, 2017

Status Update

Andrey has just finished a redesign of the RF part of XTRX to reduce Tx-Rx leakage and external interference. XTRX has much stronger RF shielding now to protect the most sensitive parts of the RF chains and will hopefully pass our internal tests. Read the full update.


Jun 08, 2017

XTRX Pinout FAQ

Answering most frequently asked questions about a carrier board design for XTRX. Read the full update.


May 03, 2017

XTRX Pinout

First of all – the project is not dead. :-). We decided to spend a bit more time optimizing RF performance to make sure we don’t disappoint you. Read the full update.


Feb 11, 2017

MIMO and Independent Receive/transmit

We often get asked how many receive and transmit chains does XTRX have and whether you can tune them to different frequencies, so I decided to clarify this once and for all. Read the full update.


Jan 23, 2017

Update & 33C3 Talk: Lessons learnt in building a low latency, high throughput PCIe based SDR

We recently gave a talk and a workshop at 33rd Chaos Communication Congress aka 33C3 on funny and not so funny issues one faces while building a high performance SDR. Read the full update.


Jul 05, 2016

First Prototypes

Just got the first batch of test boards. Feels really good to hold them. Onto the testing. Read the full update.


Jun 29, 2016

First Batch of PCBs!

First prototype PCBs are ready for assembly at our fab! Can’t wait to get our hands on the prototypes. Read the full update.


Jun 28, 2016

SPI is Now Working

So while we’re waiting for the first test run of the boards to be manufactured, I have been working on advancing the software side of things. Read the full update.


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. Read the full update.


Jun 14, 2016

First Post! It’s Tiny!

Now that Umtrx 2.3.1 is out, we wanted to give you a sneak peak at the next SDR board we’ve been working on. We’re calling it XTRX. Read the full update.

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