Re: [Discuss-gnuradio] Agile Solutions is Pleased to announce USRP STAR. Yet another addition to GNURADIO

[info]

Hi Marcus,

 

Welcome to Agile Solutions.

 

Yes, it uses both common clock and common LO.  Theres no phase tracking required due to common LO with cycle slip. This is main requirement for MIMO systems for Space Time(STBC) and Space Frequency(SFBC) Codes.

 

Although, diversity only systems needs only common clock. Either TX or RX. There were fundamental issues when we used USRP1 to detect this problem. We had extensive analysis and solid theoretical analysis to prove this. Although this analysis and material is not property of Agile Solutions, we would not like to comment more on this.  

 

In principle, MIMO systems need strict phase relations between antenna's to work. 

Particularly antenna phase relations are closely related to antenna correlation parameters. 

 

Our primary goal is to help people adopt low cost SDR solution(like USRP) which empowers our world for better wireless solution. Our effort is to make improvement every day and contribute more as far possible.

 

We know your question was straight to know in particular to LO. We intended to add more information so that people visiting at GNURADIO may benefit with this information.  

Best Regards

Agile Solutions

 

On Sat, 16 Apr 2011 13:06:06 -0400, "Marcus D. Leech" <address@hidden> wrote:

On 04/16/2011 05:10 AM, address@hidden wrote:

Agile Solutions is Pleased to announce USRP STAR. Yet another addition to GNURADIO

USRP STAR is a 2x2 full duplex MIMO Transceiver System housing complete RF and DAQ subsystems on a single board. Its architecture is designed for a true MIMO System. It meets the unique architecture required for MIMO systems which are not part of traditional MIMO hardware’s using common clock for RF subsystems where a continuous RF phase tracking is required. Coupled with these benefits it hosts onboard RF Transceiver subsystems capable of tuning frequencies from 400MHz to 4.4GHz. Applications developed based on USRP1 seamlessly works with USRP STAR. 

USRP STAR is under production. Pre-Reservations are open. 

 
USRP STAR is available for Low Introductory price of USD 800.

USRP STAR hosts  

• Altera Cyclone FPGA 12K
• Cypress FX2 USB
• Quad 12-Bit 64 MSPS ADC 
• Quad 14-bit 128 MSPS DAC
• 50MHz Lowpass filters for each channel at baseband
• Dual 400MHz to 4.4GHz Quadrature Modulators with fine tuning resolution of 1Hz
• Dual 400MHz to 4.4GHz Quadrature De-Modulators with fine tuning resolution of 1Hz
• LNA’s, Power amplifiers and attenuaors
• Receiver Sensitivity: -115dBm upto 3.8GHz and -95dBm upto 4.4GHz
• MAX RF Output Power: 17dBm with upto 25dB Output power control
• Receiver Sensitivity: -115dBm upto 3.8GHz and -95dBm upto 4.4GHz
• Receiver Noise figure: 6-8 dB

For more details and enquiries please visit www.agile-sdr-solutions.com.

 

Regards

Agile Solutions

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Does this have independent LOs, or does it use a common LO for both channels?

-- 
Marcus Leech
Principal Investigator
Shirleys Bay Radio Astronomy Consortium
http://www.sbrac.org