The impact of frequency selective multipath fading on the bit error rate performance of ARTM Tier-1 waveforms (FQPSK and SOQPSK) is derived and analyzed. In the presence of a strong specular reflection with relative magnitude |/spl Gamma//sub 1/|, the ARTM Tier-1 waveforms suffer a loss in performance of (1 - |/spl Gamma//sub 1/|)/sup -4/spl radic/|/spl Gamma///sub 1/| for |/spl Gamma//sub 1/| < 0.5 and a relatively high error floor at approximately 10/sup -2/ for |/spl Gamma//sub 1/| /spl ges/ 0.5. The ARTM Tier-1 waveforms possess twice the spectral efficiency of PCM/FM, but exhibit a greater loss and higher error floors than PCM/FM for the same multipath conditions and signal-to-noise ratio.


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    Title :

    Aeronautical telemetry using offset QPSK in frequency selective multipath


    Contributors:
    Rice, M. (author) / Xiaoyu Dang, (author)


    Publication date :

    2005-04-01


    Size :

    746253 byte




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English