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| Paper: | SPCOM-P10.10 |
| Session: | Application-Specific Systems and Implementations |
| Time: | Thursday, May 20, 15:30 - 17:30 |
| Presentation: |
Poster |
| Topic: |
Signal Processing for Communications: Multiuser Detection and Signal Separation |
| Title: |
MULTI-USER SCHEMES USING NONLINEAR TIME-VARYING MODULATION |
| Authors: |
Srinivasa Machineni; Arizona State University | | |
| | Hao Shen; Arizona State University | | |
| | Antonia Papandreou-Suppappola; Arizona State University | | |
| Abstract: |
We propose to optimally reduce multiple access interference in multi-user systems using modulation schemes based on time-varying signals with nonlinear phase function. This minimization is achieved by deriving constraints on the frequency modulation parameters of these signals. The success of the new method over frequency-shift keying signaling is demonstrated in frequency-hopped code division multiple access (FH-CDMA) systems. In addition, we propose to estimate the transmitted symbol information at the receiver using time-varying processing techniques based on unitary versions of the optimal periodogram spectral estimator. |
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