• The Design of a High-Performance Network Transceiver for iNET

      Lu, Cheng; Cook, Paul; Hildin, John; Roach, John; Teletronics Technology Corporation (International Foundation for Telemetering, 2008-10)
      A critical element of the proposed iNET architecture is the development of a telemetry network that provides two-way communication between multiple nodes on both the ground and in the air. Conventional airborne telemetry is based on IRIG-106 Chapter 4 and provides only a serial streaming data path from the aircraft to the ground. The network-centric architecture of iNET requires not only a duplex communication link between the ground and the test article, but also a communication link that provides higher bandwidth performance, higher spectrum efficiency, and a transport environment that is capable of fully packetized Internet Protocol. This paper describes the development path followed by TTC in the implementation of its nXCVR-2000G, an OFDM 802-11a-based iNET-ready IP transceiver.
    • Utilization of an IEEE 1588 Timing Reference Source in the iNET RF Transceiver

      Lu, Cheng; Roach, John; Sasvari, George; Teletronics Technology Corporation (International Foundation for Telemetering, 2008-10)
      Synchronization of the iNET communication link is essential for implementing the TDMA channel access control functions within the transceiver MAC transport layer, and providing coherent signal demodulation timing at the transceiver PHY layer. In the following implementation, the 1588 timing reference source is the GPS receiver. Because it is being used in the Ground Station Segment and Test Article Segment, it becomes feasible to utilize the 1588 timing reference for cross-layer (MAC+PHY) iNET transceiver synchronization. In this paper, we propose an unified iNET transceiver synchronization architecture to improve iNET transceiver performance. The results of the synchronization performance analysis are given.