universal software radio peripheral (usrp) x310  (Ettus Research LLC)

Journal: Sensors (Basel, Switzerland)

Article Title: Indoor Positioning of Low-Cost Narrowband IoT Nodes: Evaluation of a TDoA Approach in a Retail Environment

doi: 10.3390/s22072663

Figure Lengend Snippet: Floorplan of the covered area highlighting different aspects of the scenario, including the aisles labeled 0 to 3. ( a ) Number of nodes per shelf. There are 71 populated shelves with 1265 nodes in total. ( b ) position error bound (PEB) for the used anchor placement in the covered area. ( c ) Locations of the wideband localization infrastructure components and cabling. The three USRP radio platforms are labeled #1 to #3, the eight anchors l = 0 , ⋯ , 7 .

Article Snippet: While several integrated radio chips such as the LIME MICROSYSTEMS LMS7002M (as deployed for example in the LimeSDR platform) or the ANALOG DEVICES AD9361 are suitable as receiver hardware in principle and might be used in future implementations, the ETTUS RESEARCH/NI Universal Software Radio Peripheral (USRP) X310+TwinRX platform (NI-2945R) offers simple synchronization and an open source driver framework and was thus used in the setup presented in this paper.

Techniques: Labeling

Journal: Sensors (Basel, Switzerland)

Article Title: Indoor Positioning of Low-Cost Narrowband IoT Nodes: Evaluation of a TDoA Approach in a Retail Environment

doi: 10.3390/s22072663

Figure Lengend Snippet: Measurement setup components mounted in the test environment. ( a ) USRP #2 mounted on the top of a shelf. ( b ) Overview over the covered area. Visible are the host setup, the nodes on the shelves of aisle 1, and the cable harnesses to USRP #2 (foreground) and #3 (background). ( c ) Anchor 3. ( d ) Anchor 5.

Article Snippet: While several integrated radio chips such as the LIME MICROSYSTEMS LMS7002M (as deployed for example in the LimeSDR platform) or the ANALOG DEVICES AD9361 are suitable as receiver hardware in principle and might be used in future implementations, the ETTUS RESEARCH/NI Universal Software Radio Peripheral (USRP) X310+TwinRX platform (NI-2945R) offers simple synchronization and an open source driver framework and was thus used in the setup presented in this paper.

Techniques:

Journal: Sensors (Basel, Switzerland)

Article Title: Indoor Positioning of Low-Cost Narrowband IoT Nodes: Evaluation of a TDoA Approach in a Retail Environment

doi: 10.3390/s22072663

Figure Lengend Snippet: Block diagram of the full measurement setup. The USB dongles used to communicate with the target nodes are connected via a USB hub. The power supply uses a power cord with 230 V AC. All RF cables are 50 Ω coaxial cables with SMA connectors. The connections indicated as parallel use distinct cables for each USRP radio platform, connected to distinct ports at the host setup, e.g., three SMA connectors for the 10 M Hz reference, three SFP fiber connectors, etc.

Article Snippet: While several integrated radio chips such as the LIME MICROSYSTEMS LMS7002M (as deployed for example in the LimeSDR platform) or the ANALOG DEVICES AD9361 are suitable as receiver hardware in principle and might be used in future implementations, the ETTUS RESEARCH/NI Universal Software Radio Peripheral (USRP) X310+TwinRX platform (NI-2945R) offers simple synchronization and an open source driver framework and was thus used in the setup presented in this paper.

Techniques: Blocking Assay