Improved MIMO performance with non-orthogonal space-time block codes

Author

Tirkkonen, Olav ; Hottinen, Ari

Author_Institution

Nokia Res. Center, Espoo, Finland

Volume

2

fYear

2001

fDate

25-29 Nov. 2001

Firstpage

1122

Abstract

Transmission over multiple input multiple output (MIMO) radio channels is considered. When multiple Rx antennas are present, one may simultaneously increase the rate and improve performance by optimizing transmit diversity, using nonorthogonal space-time block codes. This improves the performance of MIMO systems considerably, especially when the number of Tx and Rx antennas is small. As an example, we consider a 2 Tx, 2 Rx system, and construct a 2×2 nonorthogonal space-time block code with symbol rate 2, which performs 2.5 dB better than the corresponding BLAST system at BER 10^-3.

Keywords

MIMO systems; block codes; channel coding; diversity reception; mobile radio; receiving antennas; transmitting antennas; BER; MIMO radio channels; multiple antennas; multiple input multiple output channels; nonorthogonal codes; performance; receiving antennas; space-time block codes; transmit diversity; transmitting antennas; Bit error rate; Block codes; Concatenated codes; Decoding; Diversity reception; Linearity; MIMO; Radio transmitters; Receiving antennas; Transmitting antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Global Telecommunications Conference, 2001. GLOBECOM '01. IEEE

Conference_Location

San Antonio, TX

Print_ISBN

0-7803-7206-9

Type

conf

DOI

10.1109/GLOCOM.2001.965654

Filename

965654