Patent ID: 6366600
Filing Date: 2002-04-02
Classification: H04B,H04L

Abstract:
A spreader architecture, comprising:a first binary arithmetic unit receiving a first input data signal and a first pseudonoise signal and outputting a first intermediate data signal according to a first predetermined binary arithmetic function applied to the first input data signal and the first pseudonoise signal, a second binary arithmetic unit receiving a second input data signal and a second pseudonoise signal and outputting a second intermediate data signal according to a second predetermined binary arithmetic function applied to the second input data signal and the second pseudonoise signal, a third binary arithmetic unit receiving the second input data signal and the first pseudonoise signal and outputting a third intermediate data signal according to a third predetermined binary arithmetic function applied to the second input data signal and the first pseudonoise signal, a fourth binary arithmetic unit receiving the first input data signal and the second pseudonoise signal and outputting a fourth intermediate data signal according to a fourth predetermined binary arithmetic function applied to the first input data signal and the second pseudonoise signal, a first selector receiving the first and second intermediate data streams and a QPSK select signal and outputting a first output data signal, a second selector receiving the third and fourth intermediate data streams and one among the QPSK select signal and its inversion and outputting a second output data signal, and an output selector receiving the first and second output data signals, an OOK data signal, and an OOK select signal and outputting first and second exiting data signals, wherein the first and second output data signals comprise at least the first input data signal spread by the first and second pseudonoise signals by one among at least BPSK and QPSK modulation, depending on the level of the QPSK select signal, and wherein the first and second exiting data signals comprise (A) one among at least the first input data signal and the OOK data signal (B) spread by the first and second pseudonoise signals by one among at least BPSK, QPSK, and OOK modulation, depending on the levels of the QPSK and OOK select signals.