1. Alexander Chemeris
CEO, fairwaves LLC
GSM re-invented
UmTRX
The SDR transceiver for GSM
(and LTE?)

2. Alexander Chemeris twitter: @chemeris e-mail: Alexander.Chemeris@fairwaves.ru
UmTRX
SDR transceiver for
• low-cost,
• mid-range,
• power-efficient
base stations
And everything else :)

3. Alexander Chemeris twitter: @chemeris e-mail: Alexander.Chemeris@fairwaves.ru
UmTRX architecture

4. Alexander Chemeris twitter: @chemeris e-mail: Alexander.Chemeris@fairwaves.ru
UmTRX technical details
• Channels: 2
• Tuning: 375MHz-2.8 GHz
• Bandwidth: 13 MHz
• Low-pass filter: 1.5-28 MHz
• ADC and DAC: 12-bit
• Output RF power: 100 mW @ 900MHz
50 mW @ 1800MHz
• Input voltage: 8-28 V DC

5. Alexander Chemeris twitter: @chemeris e-mail: Alexander.Chemeris@fairwaves.ru
UmTRX highlights
• Dual TRX
• GPS-locked clock
• 5.25" form-factor
• 100 mW output power
• Ethernet connection
MIMO
independent channels
no maintenance
no expensive OCXO
many enclosures
fits into CD-ROM slot
standard for BTS
amplifies to any value
standard
reliable

6. Alexander Chemeris twitter: @chemeris e-mail: Alexander.Chemeris@fairwaves.ru
Modified UHD firmware & software
Out of the box support for:
• GnuRadio
• OpenBTS
• OpenBSC

7. Alexander Chemeris twitter: @chemeris e-mail: Alexander.Chemeris@fairwaves.ru
UmTRX DIY hardware
Bare board 5.25” tray

8. Alexander Chemeris twitter: @chemeris e-mail: Alexander.Chemeris@fairwaves.ru
UmTRX based base stations
Desktop
Rack mount
Outdoor

9. GSM re-invented
Alexander Chemeris
Alexander.Chemeris@fairwaves.ru
+7 (915) 330-7626
skype: Alexander.Chemeris
twitter: @chemeris