Experimental results using a MIMO test bed for wideband, high spectral efficiency tactical communications

Author

Liberti, Joseph C. ; Koshy, John C. ; Hoerning, Timothy R. ; Martin, Carol C. ; Dixon, James L. ; Triolo, Anthony A. ; Murray, Roy R. ; McGiffen, Thomas G.

Author_Institution

Telcordia Technol. Inc., Red Bank, NJ

fYear

2005

fDate

17-20 Oct. 2005

Firstpage

1340

Abstract

This paper presents results from a MIMO measurement campaign designed to demonstrate spectral efficiencies of 13.7-26.0 information bits per second per Hz (bps/Hz) using an 8times8 test bed over a range of outdoor wireless channels with low antenna heights at each end of the link. Links included line-of-sight and non-line-of-sight channels obstructed by foliage and buildings. Measurements were performed at 456, 904, and 2177 MHz using a variety of array configurations including multiple polarization configurations. The transmitted MIMO OFDM signal occupied a 5 MHz bandwidth and used several error control coding and interleaving strategies. Signal processing at the receiver employed iterative detection with spatial filtering, SISO demappers, BCJR-based decoding (for turbo codes), and soft-cancellation of self-interference. Results demonstrated successful link closure at spectral efficiencies up to 26 bps/Hz using real-world synchronization, channel estimation, and carrier-frequency offset tracking

Keywords

MIMO systems; OFDM modulation; antenna arrays; broadband networks; channel estimation; error correction codes; filtering theory; military communication; radio links; signal detection; turbo codes; wireless channels; 2177 MHz; 456 MHz; 5 MHz; 904 MHz; MIMO OFDM signal; MIMO test bed; carrier-frequency offset tracking; channel estimation; error control coding; high spectral efficiency tactical communications; interleaving strategies; iterative detection; line-of-sight and non-line-of-sight channels; multiple polarization configurations; outdoor wireless channels; signal processing; spatial filtering; turbo codes; wideband links; Antenna measurements; Bandwidth; Buildings; Error correction; MIMO; OFDM; Performance evaluation; Polarization; Testing; Wideband;

fLanguage

English

Publisher

ieee

Conference_Titel

Military Communications Conference, 2005. MILCOM 2005. IEEE

Conference_Location

Atlantic City, NJ

Print_ISBN

0-7803-9393-7

Type

conf

DOI

10.1109/MILCOM.2005.1605864

Filename

1605864