Space frequency block codes and code division multiplexing in OFDM systems

Author

Kaiser, Stefan

Author_Institution

Inst. of Commun. & Navigation, German Aerosp. Center, Wessling, Germany

Volume

4

fYear

2003

fDate

1-5 Dec. 2003

Firstpage

2360

Abstract

The paper investigates different diversity concepts for OFDM systems. These are space frequency block codes (SFBCs) and code division multiplexing (CDM). The performances of both, and of combinations of both, are compared for coded OFDM systems in a Rayleigh fading channel. The applied SFBCs and CDM have in common that they have no rate loss and thus do not decrease the bandwidth efficiency of the system. While the SFBCs exploit space and frequency diversity, CDM exploits frequency and time diversity in OFDM systems. Additionally, the effects due to diversity gains by channel coding are taken into account in the investigations.

Keywords

OFDM modulation; Rayleigh channels; block codes; channel coding; code division multiplexing; diversity reception; mobile radio; transmitting antennas; CDM; Rayleigh fading channel; SFBC; bandwidth efficiency; channel coding; code division multiplexing; coded OFDM systems; diversity gain; frequency diversity; mobile radio systems; space diversity; space frequency block codes; time diversity; transmit antenna diversity; Bandwidth; Block codes; Code division multiplexing; Diversity methods; Fading; Frequency diversity; Multicarrier code division multiple access; OFDM; Transmitters; Transmitting antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Global Telecommunications Conference, 2003. GLOBECOM '03. IEEE

Print_ISBN

0-7803-7974-8

Type

conf

DOI

10.1109/GLOCOM.2003.1258657

Filename

1258657