Referenced Items are not available for this document.
Multiple-input multiple-output (MIMO) wireless transmission imposes huge challenges on the design of efficient hardware architectures for iterative receivers. A major challenge is soft-input soft-output (SISO) MIMO demapping, often approached by sphere decoding (SD). In this brief, we introduce-to our best knowledge-the first VLSI architecture for SISO SD applying a single tree-search approach. Compared with a soft-output-only base architecture similar to the one proposed by Studer in IEEE J-SAC 2008, the architectural modifications for soft input still allow a one-node-per-cycle execution. For a 4×4 antennas system using quadrature amplitude modulation (QAM) with order 16, the area increases by 57%, and the operating frequency degrades by 34% only.
Published in:
Circuits and Systems II: Express Briefs, IEEE Transactions on
(Volume:57
,
Issue:
9
)
Date of Publication: Sept. 2010
- Page(s):
- 706 - 710
- ISSN :
- 1549-7747
- INSPEC Accession Number:
- 11523329
- Digital Object Identifier :
- 10.1109/TCSII.2010.2056014
- Product Type:
- Journals & Magazines
- Date of Current Version :
- 13 September 2010
- Issue Date :
- Sept. 2010
- Sponsored by :
- IEEE Circuits and Systems Society
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