Spread spectrum communication system apparatus

Details Spread spectrum communication system apparatus Spread spectrum communication system apparatus

2007-10-16

2007-10-16

Kumar, Pankaj (Department: 2611)

Pulse or digital communications

Spread spectrum

Direct sequence

Reexamination Certificate

active

10343466

ABSTRACT:
A receiving apparatus eliminating the need for performing at all times a function provided for a mode that is most susceptible to deterioration in accuracy in adaptive modulation communication. In a spread spectrum communication system according to the present invention, a control unit reads a demodulating method from a control signal specifying the demodulating method, and on the basis of the read demodulating method, the control unit controls a sampling rate of an A/D conversion unit and a despreading unit, a number of pilot symbols used by a propagation path estimating unit, and a number of pilot symbols despread by the despreading unit. Thereby, when the demodulating method is other than 64-QAM, the sampling rate and the like adjusted to QPSK or 16-QAM can be set.

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