Space-Time Coding for Aeronautical Telemetry: Part II-Decoder and System Performance

作者：Rice Michael^*; Nelson Tom; Palmer Joseph; Lavin Christopher; Temple Kip

来源：IEEE Transactions on Aerospace and Electronic Systems, 2017, 53(4): 1732-1754.

DOI：10.1109/TAES.2017.2671785

This paper describes the use of Alamouti-encoded-shaped offset QPSK version TG(SOQPSK-TG) to solve the two-antenna problem in aeronautical telemetry. The Alamouti space-time block code is used to encode the phase states in the complex exponential representation of SOQPSK-TG. Because SOQPSK-TG possesses memory, the Alamouti decoder is a sequence estimator. Maximum likelihood and least squares sequence decoders are derived. To reduce the number of states, the eight-waveform cross-correlated trellis-coded quadrature modulation (XTCQM) approximate representation of SOQPSK-TG is used. A prototype decoder based on the least squares decoder and the estimators described in Part I and operating at a data rate of 10 Mb/s was tested in the laboratory in test flights at the Air Force Test Center, Edwards AFB. The test flights demonstrate that Alamouti-encoded SOQPSK-TG, as described in this paper, using the least squares decoder based on the estimators described in Part I solves the two antenna problem in aeronautical telemetry.

• 出版日期2017-8
• 单位Los Alamos