Developers, makers and enthusiasts working on a MIMO system may be interested in a new piece of hardware launched by the Crowd Supply website last month called the XYNC. The new XYNC board builds on the success of the Octopack SDR we offered during the XTRX campaign and takes into account feedback from the original Octopack users. Watch the video below to learn more about the new board its features and specifications.
“You can connect two XYNC boards, either to increase the number of RX/TX channels (e.g., two XYNC Octos give you 32 TX and 32 RX channels) or to increase throughput per channel (e.g., two XYNC Quadros give you twice the throughput of a single XYNC Octo). Connecting more than two XYNC boards is also possible, but requires an external clock and 1 pps signal distribution circuitry, neither of which is provided as part of this campaign.”
“A single XYNC comes equipped with four or eight removable XTRX boards, metal installation brackets, cables for all of the TX/RX ports and the GPS port, and a special board for synchronizing the XTRX units. Each onboard XTRX provides two transmit channels and two receive channels. Thus, XYNC Quadro (with four XTRX units) has eight transmit and eight receive channels, and XYNC Octo (with eight XTRX units) has 16 transmit and 16 receive channels. Two XYNC Octo can be synchronized and will give you 32 transmit and 32 receive channels.
On the digital side, each XTRX unit is connected to a PCIe switch that multiplexes the XTRX PCIe lanes into a single PCIe 2.0 x4 connector. This makes it very compact and easy to install into a standard PC. Just don’t forget to provide enough air flow for cooling, as setups like this can get quite hot.”
Specifications and features of the XYNC :
– RF Chipset: 4x or 8x Lime Microsystems LMS7002M FPRF (double that for Tandem models)
– FPGA: 4x or 8x Xilinx Artix 7 50T (double that for Tandem models)
– Channels: 8×8/16×16/32×32 MIMO
– Sample Rate: ~0.2 MSPS to 120 MSPS per channel (subject to the limitations explained above)
– PCIe Throughput: PCIe x4 Gen 2.0, 16 Gb/s (double that for Tandem models)
– RF Output Power: 0 to 10 dBm depending on frequency
– RF Bandwidth: 1.4 MHz to 130 MHz (1.4 MHz to 30 MHz for the 6 GHz RX option)
– Tuning Range: 30 MHz – 3.8 GHz
– RX/TX Range:
– 10 MHz – 3.7 GHz
– 100 kHz – 3.8 GHz with signal level degradation
– Reference Clock:
– Stability w/o GPS: 100 ppb from 0°C to 70°C
– Stability w/GPS: <10 ppb stability after GPS/GNSS lock
– Form Factor: full-size PCIe
– Bus Latency: <10 µs, stable over time
– Synchronization: synchronize two XYNC boards directly or more than two XYNC boards with an external clock distribution network
Source: Crowd Supply
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