Method of, and apparatus for, processing low power pseudo-random

Details Method of, and apparatus for, processing low power pseudo-random Method of, and apparatus for, processing low power pseudo-random

1998-01-09

2000-08-01

Pham, Chi H.

Pulse or digital communications

Spread spectrum

455524, 370312, A61F 206, H04L 2730

Patent

active

060977515

ABSTRACT:
A communications system includes a primary station having transmitting and receiving sections, a formatting stage for formatting messages to be transmitted by the transmitting section, and one or more secondary stations. The or each secondary station has a receiving section for receiving messages from the primary station and a transmitting section for transmitting signals as pseudo-random code sequence signals, and the primary station is adapted to receive and to simultaneously decode and detect the or each of the pseudo-random code sequence signals. The simultaneously decoding and detection operations involves implementation of a Fast Fourier Transform (FFT) in a manner that a code sequence for despreading the pseudo-random code sequence is applied within the FFT. A resulting spectrum is checked for a peak which indicates that one of the pseudo-random code sequences has been successfully decoded and detected.

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