Hardware implementation of a 2×2 differential space-time code

Author

Comar, Bradley B. ; Taylor, Robert M., Jr.

Author_Institution

Mitre Corp., McLean, VA, USA

fYear

2005

fDate

5-8 June 2005

Firstpage

776

Lastpage

780

Abstract

Communication systems using multiple-input-multiple-output (MIMO) space-time codes are claimed to have superior performance in multipath environments. Modems using 2×2 differential space-time coding are implemented on FPGAs and RF front ends are constructed using a variety of filters, mixers, and amplifiers. Single-input-single-output (SISO) and MIMO systems are tested in an indoor laboratory environment with interference. Both line-of-sight (LOS) and non-LOS channels are tested. Although the MIMO system outperforms the SISO system at low interference levels, high levels of interference adversely affect MIMO systems more than SISO systems.

Keywords

MIMO systems; antenna arrays; antenna testing; channel coding; field programmable gate arrays; modems; multipath channels; space-time codes; FPGA; LOS channel; MIMO; RF front end; SISO; differential space-time code; hardware implementation; indoor laboratory environment; line-of-sight; modem; multipath environment; multiple-input-multiple-output; nonLOS channel; single-input-single-output; Differential amplifiers; Field programmable gate arrays; Filters; Hardware; Interference; MIMO; Modems; Radio frequency; Radiofrequency amplifiers; Space time codes;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing Advances in Wireless Communications, 2005 IEEE 6th Workshop on

Print_ISBN

0-7803-8867-4

Type

conf

DOI

10.1109/SPAWC.2005.1506245

Filename

1506245