In Multiuser Detection, code and timing information of multiple users are jointly used to better detect each individual user. The Important assumption is that the codes of the multiple users are known to the receiver priori.
Classification of the detectors:
- Linear Multi-user detectors: In linear multi user detection, a linear mapping is applied to the soft outputs of the conventional detector to produce a new set of output, which hopefully provide better performance.
- Subtractive Interference cancellation detectors: In this type of detection estimates of the interference are generated and subtracted out ,
• Linear Multi-user detectors: