Patent ID: 8379693

Claim:
A method for de-spreading quadrature pseudorandom noise, comprising: inputting data sequences I′ and Q′, and inputting pseudorandom noise sequences PN I and PN Q , on which quadrature pseudorandom noise de-spreading operation will be performed; in each timeslot, extracting continuously 2048 codeword from each pseudorandom noise sequence PN I and each pseudorandom noise sequence PN Q respectively, performing time-division de-multiplexing operation on the 2048 codeword respectively, and obtaining pseudorandom noise sequences PN I ′ and PN Q ′ both with a length of 1600 codeword; and performing quadrature pseudorandom noise de-spreading operation on the pseudorandom noise sequences PN I ′ and PN Q ′ and the data sequences I′ and Q′ with a length of 1600 codeword input in the timeslot, and then outputting data sequences I and Q, wherein subsequent time-division multiplexing and quadrature pseudorandom noise spreading are performed on the data sequences I and Q before the data sequences I and Q are sent.