Digital real-time modem processes octuple differential-phase-shift-keyed trellis-coded modulation. Intended for use in communicating data at rate up to 4.8 kb/s in land-mobile satellite channel (Rician fading) of 5-kHz bandwidth at carrier frequency of 1 to 2 GHz. Modulator and demodulator contain digital signal processors performing modem functions. Design flexible in that functions altered via software. Modem successfully tested and evaluated in both laboratory and field experiments, including recent full-scale satellite experiment. In all cases, modem performed within 1 dB of theory. Other communication systems benefitting from this type of modem include land mobile (without satellites), paging, digitized voice, and frequency-modulation subcarrier data broadcasting.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Digital 8-DPSK Modem For Trellis-Coded Communication


    Contributors:
    Jedrey, T. C. (author) / Lay, N. E. (author) / Rafferty, W. (author)

    Published in:

    Publication date :

    1989-09-01



    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English




    Frequency-hopping trellis-coded 8-DPSK for indoor communications

    Agusti,R. / Femenias,G. / Univ.Politecnica de Catalunya,UPC,ES | Automotive engineering | 1991


    Switched-diversity trellis-coded 8-DPSK for mobile radio applications

    Femenias,G. / Agusti,R. / Univ.Politecnica de Catalunya,ES | Automotive engineering | 1990



    Multiple-Trellis-Coded Modulation

    Divsalar, D. / Simon, M. K. | NTRS | 1990


    Generalized Multiple-Trellis-Coded Modulation

    Divsalar, D. / Simon, M. K. | NTRS | 1989