| Paper: | SPCOM-P7.1 | ||
| Session: | MIMO Receiver Algorithms | ||
| Time: | Thursday, May 20, 09:30 - 11:30 | ||
| Presentation: | Poster | ||
| Topic: | Signal Processing for Communications: Space-Time/MIMO Channel Equalization | ||
| Title: | DYNAMIC NULLING-AND-CANCELLING WITH NEAR-ML PERFORMANCE FOR MIMO COMMUNICATION SYSTEMS | ||
| Authors: | Dominik Seethaler; Vienna University of Technology | ||
| Harold Artés; Vienna University of Technology | |||
| Franz Hlawatsch; Vienna University of Technology | |||
| Abstract: | The conventional nulling-and-cancelling (NC) detection scheme for MIMO systems uses the layerwise post-detection mean-square errors (MSEs) as reliability measures for layer sorting.These MSEs are average measures that do not dependon the received vector. In this paper, we propose the novel dynamic nulling-and-cancelling (DNC) detector that performs''dynamic'' layer sorting based on the current received vector. Approximate a-posteriori probabilities(constructed by means of a Gaussian approximation for the post-detection interference) are used as measures of layer reliability. This results in an MMSE nulling technique that uses a simple layer-sorting rule with significantly improvedperformance. Our simulation results show that the DNC scheme can yield near-ML performance for a wide range of system sizes and signal-to-noise ratios. | ||
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