Real-time implementation of a sphere decoder-based MIMO wireless system

Author

Mendicute, Mikel ; Barbero, Luis G. ; Landaburu, Gorka ; Thompson, John S. ; Altuna, Jon ; Atxa, Vicente

Author_Institution

Dept. of Electron., Univ. of Mondragon, Mondragon, Spain

fYear

2006

fDate

4-8 Sept. 2006

Firstpage

1

Lastpage

5

Abstract

This contribution analyzes the integration of the sphere decoder (SD) in a complete field-programmable gate array (FPGA)-based real-time multiple input-multiple output (MIMO) platform. The algorithm achieves the performance of the maximum likelihood detector (MLD) with reduced complexity. However, its non-deterministic complexity, depending on the noise level and the channel conditions, hinders its integration process. This paper evaluates the performance and limitations of the SD in a real-time environment where signal impairments, such as symbol timing, imperfect channel estimation or quantization effects are considered.

Keywords

MIMO communication; channel estimation; decoding; field programmable gate arrays; maximum likelihood detection; quantisation (signal); FPGA; MIMO wireless system; MLD; channel conditions; complete field programmable gate array; imperfect channel estimation; maximum likelihood detector; noise level; nondeterministic complexity; quantization effects; real-time multiple input-multiple output platform; reduced complexity; signal impairments; sphere decoder; symbol timing; Abstracts; Channel estimation; Field programmable gate arrays; Generators; Real-time systems; Transceivers; Transmitters;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing Conference, 2006 14th European

Conference_Location

Florence

ISSN

2219-5491

Type

conf

Filename

7071092