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Semi-adaptive modulation and forward error correction for wideband communication systems

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1 Author(s)
Hayes, R.L. ; L-3 Commun. Cincinnati Electron., Mason, OH, USA

This paper presents a novel application of adaptive modulation and coding (AMC) for spacecraft communication systems. Whereas terrestrial AMC often assumes availability of either real-time or statistical channel state information at the transmitter (CSIT), in the space environment there are often insufficient resources to provide real-time access to channel statistics at the transmitter. We demonstrate a communication system architecture that utilizes some of the principles of closed loop AMC, but without the requirement of a feedback path to provide CSIT. We propose a system which switches among three modulation schemes commonly considered for implementation in the space environment: binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), and 8-state phase shift keying (8-PSK). For these modulation states, we consider possible forward error correction algorithms which have been standardized by the Consultative Committee for Space Data Systems (CCSDS).

Published in:

Aerospace Conference, 2011 IEEE

Date of Conference:

5-12 March 2011