| Paper: | SPCOM-L6.1 | ||
| Session: | MIMO Precoder Design | ||
| Time: | Friday, May 21, 09:30 - 09:50 | ||
| Presentation: | Lecture | ||
| Topic: | Signal Processing for Communications: Space-Time/MIMO Channel Equalization | ||
| Title: | LINEAR MIMO PRECODERS FOR FIXED RECEIVERS | ||
| Authors: | Ami Wiesel; Technion-Israel Institute of Technology | ||
| Yonina C. Eldar; Technion-Israel Institute of Technology | |||
| Shlomo Shamai (Shitz); Technion-Israel Institute of Technology | |||
| Abstract: | We consider the problem of designing linear multiple input multiple output (MIMO) precoders for fixed receivers. We first derive a precoder that minimizes the average power subject to Signal to Interference plus Noise Ratio (SINR) constraints, and then derive a precoder that maximizes the worst case SINR subject to an average power constraint. We show that both problems can be solved using standard optimization packages. In addition, a more efficient solution based on Karush-Kuhn-Tucker KKT) optimality conditions is presented which gives more insight into the problem. Our design promises equal SINRs and fairness among the multiple outputs. Simulation results in a multiuser system show that the proposed precoders can significantly outperform existing linear precoders. | ||
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