The anabolism die parallel interference hitting turning off of the CDMA system (EPIC)

摘要

New multi-user detection configuration EPIC (anabolism die parallel interference hitting to turn off) is disclosed. The rake receiver signal z _{Rake which} is output the multiple user signals b_{1 which} diffuse with the diffusion code, b₂, by the rake receiver which receives the diffusion spectrum composite signal which consists of b _k is detected. First, 1st hard judgment value b _Rake is generated on the basis of rake receiver output. Next, 1st parallel interference hitting turning off value is generated on the basis of this 1st hard judgment value, 2nd hard judgment value b _PIC is generated and on the basis of this 1st parallel interference hitting turning off value. After that, 1st and 2nd hard judgment value being synthesized, 1st synthetic value is formed, 2nd parallel interference hitting turning off value is generated and on the basis of that 1st synthetic value. Finally, 3rd hard judgment value is formed on the basis of the 2nd parallel interference hitting turning off value, and this 3rd hard judgment value, is output 1st step anabolism die parallel interference hitting turning off value b _EPIC as (1).