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| Paper: | SPCOM-P11.11 |
| Session: | CDMA and Spread-Spectrum Systems |
| Time: | Friday, May 21, 09:30 - 11:30 |
| Presentation: |
Poster |
| Topic: |
Signal Processing for Communications: Multiuser Detection and Signal Separation |
| Title: |
NEAR-FAR RESISTANT MULTI-USER DETECTOR USING ENERGY CONTOURS |
| Authors: |
Ananya Sen Gupta; University of Illinois at Urbana-Champaign | | |
| | Andrew C. Singer; University of Illinois at Urbana-Champaign | | |
| Abstract: |
A multi-user detector with scalable complexity that achieves the maximum likelihood (ML) solution for two users and gives good sub-optimal performance for a higher number of users is proposed. The key idea is to construct a look-up table based on the geometric structure of the signal constellation, and then perform fast decoding based on the look-up table. The proposed detector is near-far resistant and its performance is consistently better than existing sub-optimal detectors when the number of users is greater than the number of dimensions. The robustness of the detector against noise can be controlled at the expense of higher complexity. |
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