| Paper: | DISPS-L2.4 | ||
| Session: | Efficient implementations of Communications and Coding Applications | ||
| Time: | Friday, May 19, 15:00 - 15:20 | ||
| Presentation: | Lecture | ||
| Topic: | Design and Implementation of Signal Processing Systems: Custom Processors, Architectures, and VLSI Hardware | ||
| Title: | Probabilistic List Sphere Decoding for LDPC-coded MIMO-OFDM Systems | ||
| Authors: | Sungchung Park, Kwyro Lee, Korea Advanced Institute of Science and Technology, Republic of Korea; Yuping Zhang, Keshab K. Parhi, University of Minnesota, United States; Jin Lee, Sin-Chong Park, Information and Communications University, Republic of Korea | ||
| Abstract: | A probabilistic list sphere decoding (LSD) is proposed for LDPC-coded MIMO-OFDM systems. By confining the search to channel-adaptively chosen promising candidate groups, our proposed probabilistic LSD evaluates the more promising candidates earlier in the search, while retaining efficient implementation of the depth-first LSD. Simulation results show that, the proposed LSD significantly improves the error performance for constrained throughput, or increases the throughput for a fixed bit error rate. The proposed LSD can be implemented by simply adding special hardware blocks that perform preprocessing and control the tree traversal. The K-best search algorithm enables efficient implementation of the preprocessing. | ||
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