Pulse or digital communications – Repeaters – Testing
Patent
1991-05-03
1993-01-05
Chin, Stephen
Pulse or digital communications
Repeaters
Testing
332103, H04L 2503
Patent
active
051777690
ABSTRACT:
Digital circuitry comprising multiple read-only-memory (ROM) units that store predetermined data sequences are utilized to generate a digital representation of a composite signal that represents overlapping Nyquist pulses derived from input data bits. The generated signal exhibits relatively fast ON/OFF transitions. At the same time, control signals applied to the outputs of the ROMs insure that the representation preserves prespecified tail portions that minimize spectral spreading in a time-division multiple-access (TDMA) system. Once version of the circuitry generates a digital representation of a baseband signal derived from a single stream of input data bits. Another version of the circuitry generates a digital representation of a quadrature-phase-modulated carrier derived from two independent input data streams.
REFERENCES:
patent: 4750192 (1988-06-01), Dzung
patent: 4757519 (1988-07-01), Collison et al.
patent: 4849991 (1989-07-01), Arnold et al.
patent: 4937841 (1990-06-01), Chuang et al.
patent: 4941155 (1990-07-01), Chuang et al.
patent: 5093637 (1992-03-01), Isota et al.
patent: 5105445 (1992-04-01), Karam et al.
Arnold Hamilton W.
Sollenberger Nelson R.
Bell Communications Research Inc.
Chin Stephen
Suchyta Leonard Charles
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