For pt.VI B see ibid., vol.AES-22, no.3, p.272 (1986). The results of direct-sequence spread spectrum multiple access (SSMA) communication experiments using the Japanese Sakura communications satellite are presented. In order to carry out these experiments, three different types of direct-sequence spread spectrum systems were developed. The first is multiplexed spread spectrum random-access (SSRA) equipment which provides complete random access by about 200 simultaneous users. The second is a quadriphase spread spectrum (Q-SS) system. Experimental results confirmed that the initial acquisition time was only about 0.1 s using a CCD matched filter and that the Q-SS technique was effective in reducing intermodulation interferences. The third is a SCOUT system which provides a satellite communications subscriber with automatic connection to the terrestrial telephony network via a satellite telephony switching center. This function was confirmed by a network connection test.


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    Titel :

    Japan's CS (Sakura) communications satellite experiments. VI C. Communications experiments: spread spectrum multiple access


    Weitere Titelangaben:

    Japans CS-(Sakura)-Kommunikationssatellitenexperimente. VI C. Kommunikationsexperimente: Spreizspektrum-Vielfachzugriff


    Beteiligte:
    Hamamoto, N. (Autor:in) / Masamura, T. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    1986


    Format / Umfang :

    10 Seiten, 4 Quellen


    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch