Abstract
In this paper, we introduce the concept of stage-dependent decision functions. The latter exploit the improvement of the soft-decisions' reliability with increasing number of stages to take more hard-decisions and thus cancels more noise from stage to stage. We prove that if the stage-dependent thresholds can be optimized at each stage then the nonlinear SIC can approach the single user bound Simulation results show significant BER improvement compared to the SIC using stage-independent decision functions.
Original language | English |
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Pages | B497-B500 |
State | Published - 2004 |
Keywords
- CDMA
- Decision functions
- Multiuser detection
- SIC detectors
ASJC Scopus subject areas
- Computer Science Applications
- Electrical and Electronic Engineering