| 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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