The MIMO testbed requires several parts and components for full functionality. Quantities may vary depending on the number of devices you want to synchronize.
| Part | Quantity |
|---|---|
| SMA-connected magnetic mount antenna |
Minimum: 4 Maximum: 16 |
| USRP device kit |
Minimum: 4 Maximum: 16 |
| USRP MIMO synchronization and data cable | 1 per pair of USRP-2920/2921/2922/2930/2932 devices |
| Trimble Thunderbolt (REF and PPS) | 2 |
| Category 5 Ethernet cables | 1 per USRP-2920/2921/2922/2930/2932 device |
| 0.3 m BNC-to-BNC cables | 4 |
| 3-way female BNC "T" | 4 |
| 3-way male-female-female BNC "T" | 8 |
| BNC (m)-to-SMA (m) cable | 16 |
| 10 port Gigabit Ethernet switch | 1 |
| PCIe Gigabit Ethernet card (Intel chipset) | 1 |
The coherent local oscillator (LO) is derived from the 10 MHz Reference Clock. An oven-controlled oscillator (OCXO) supplies the 10 MHz Reference Clock output and digital pulse per second (PPS) output. The OCXO provides an accurate frequency source that operates without a GPS antenna. You can add a GPS antenna to improve synchronization and to provide a global concept of time.