Robust iterative multiuser receiver for coded CDMA systems in non-Gaussian channels
A robust front-end pre-filter incorporating non-quadratic signal processing techniques is proposed. We will demonstrate the effectiveness of this filter in suppressing impulsive noises in a coded direct sequence code-division multiple access (DS-CDMA) communication system. Based on M-Estimation appr...
| Main Authors: | , , |
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| Format: | Article |
| Published: |
IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG
2007
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| Subjects: | |
| Online Access: | http://shdl.mmu.edu.my/3044/ |
| Summary: | A robust front-end pre-filter incorporating non-quadratic signal processing techniques is proposed. We will demonstrate the effectiveness of this filter in suppressing impulsive noises in a coded direct sequence code-division multiple access (DS-CDMA) communication system. Based on M-Estimation approach, the pre-filter works by minimizing an appropriate penalty function in an iterative fashion with minimal increase in computational complexity of the system. With the use of this pre-filter in the system, performance enhancement in excess of 6 dB in non-Gaussian impulsive channels is demonstrated while maintaining comparable performance in Gaussian channel. |
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