Predicting the pruning potential in sphere decoding for multiple-input multiple-output detection

Author

Jang, Hwanchol ; Lee, Heung-No ; Nooshabadi, Saeid

Author_Institution

Dept. of Inf. & Commun., Gwangju Inst. of Sci. & Technol., Gwangju, South Korea

fYear

2011

fDate

6-9 Nov. 2011

Firstpage

937

Lastpage

938

Abstract

In this work, a method for predicting the pruning potential of a sphere constraint (SC) for sphere decoding (SD) is developed. Because the direct prediction of the pruning potential is not easy, the orthotope constraint (OC), an approximation of SC, is used instead of SC. This pruning potential prediction makes it possible to increase pruning at the root of the search tree in SD, considering it is the most desirable location for pruning.

Keywords

MIMO communication; maximum likelihood decoding; maximum likelihood detection; tree searching; MIMO detection; SC approximation; SD; multiple input multiple output; orthotope constraint; pruning potential prediction; search tree; sphere constraint; sphere decoding; Computational modeling; Decoding; Electronic mail; Euclidean distance; MIMO; Signal to noise ratio; Vectors; maximum-likelihood (ML) detection; multiple input multiple output (MIMO); sphere decoding (SD);

fLanguage

English

Publisher

ieee

Conference_Titel

Signals, Systems and Computers (ASILOMAR), 2011 Conference Record of the Forty Fifth Asilomar Conference on

Conference_Location

Pacific Grove, CA

ISSN

1058-6393

Print_ISBN

978-1-4673-0321-7

Type

conf

DOI

10.1109/ACSSC.2011.6190147

Filename

6190147