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Partitioned scheduling for sphere decoding with runtime constraints for practical MIMO communication systems
Author(s) -
Kim T. H.,
Kim J. W.
Publication year - 2016
Publication title -
international journal of communication systems
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.344
H-Index - 49
eISSN - 1099-1131
pISSN - 1074-5351
DOI - 10.1002/dac.2998
Subject(s) - computer science , mimo , decoding methods , interleaving , scheduling (production processes) , algorithm , communications system , bit error rate , real time computing , computer engineering , telecommunications , mathematical optimization , channel (broadcasting) , mathematics , operating system
Summary This paper presents an effective scheduling scheme for sphere decoding (SD) with runtime constraints, targeting the practical multiple‐input multiple‐output (MIMO) communication systems where neither the interleaving scheme nor its block size cannot be designed freely. The proposed scheme imposes runtime constraints on SD to distribute the errors due to the early termination of SD. Because the distributed errors may be corrected effectively by forward error correction, the error‐rate performance can be improved; experimental results show that the performance improvement is approximately 2dB in terms of the signal‐to‐noise ratio to achieve a bit‐error rate of 10 −4 in 4 × 4 16‐QAM MIMO systems. Copyright © 2015 John Wiley & Sons, Ltd.