The invention discloses a method of applying a long cell-code in a joint detection system. At transmitters, multiples of the spreading code (spreading factor) is taken as the length of the long cell-code to scramble the signal, and at receivers, the method still takes the multiuser detection to process the received signal. The method includes that: for every antenna unit, making channel estimation to obtain a channel estimation result of each antenna unit; generating a first mid-matrix of the received data of each antenna unit that relates to selected length of said long cell-code and the channel estimation resu based on the first mid-matrix, generating a second mid-matrix and its associate matrix, and then based on said generated second mid-matrix and its associate matrix, generating a third mid-matrix; making Cholesky decomposition of said third mid-matrix, wherein the number of decomposition order relates to the length of said long cell-code; making demodulation processing based on said Cholesky decomposition result and said received signals of all antenna units having been matching filtered. The whole computation loads of the method are acceptable.
展开▼
