Tree search space reduction for soft-input soft-output sphere decoding in MIMO systems

Dan Zhang, I. Wei Lai, Gerd Ascheid

研究成果: 書貢獻/報告類型會議貢獻

摘要

For soft-input soft-output sphere decoding (SD), the combination of the Schnorr-Euchner (SE) enumeration and the radius reduction shrink the search space quickly but with considerable computational complexity. In this paper, a low complexity approach is proposed to reduce the tree search space before SD starts. Particularly, such reduction is achieved by 1) tightening the initial radius; 2) restricting the search space to a subset of the symbol lattice. With further enhancement on the tree pruning constraint, simulation results demonstrate significant complexity savings with negligible error rate performance loss.

原文英語
主出版物標題2011 IEEE 73rd Vehicular Technology Conference, VTC2011-Spring - Proceedings
DOIs
出版狀態已發佈 - 2011 八月 29
事件2011 IEEE 73rd Vehicular Technology Conference, VTC2011-Spring - Budapest, 匈牙利
持續時間: 2011 五月 152011 五月 18

出版系列

名字IEEE Vehicular Technology Conference
ISSN(列印)1550-2252

會議

會議2011 IEEE 73rd Vehicular Technology Conference, VTC2011-Spring
國家匈牙利
城市Budapest
期間11/5/1511/5/18

ASJC Scopus subject areas

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics

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