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).


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    Title :

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


    Contributors:
    Hayes, R L (author)

    Published in:

    Publication date :

    2011-03-01


    Size :

    456257 byte





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English






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