A BOLD MIMO-OFDM scheme using joint eigen beamformers with ad-hoc power allocation

Author

Lee, Won Cheol ; Sung, Si Hwan

Author_Institution

Sch. of Electron. Eng., Soongsil Univ., Seoul, South Korea

fYear

2004

fDate

18-19 Nov. 2004

Firstpage

205

Lastpage

210

Abstract

This paper describes the proposal and operational principle of a JBSTBC (joint beamforming space-time block coding) scheme over an orthogonal frequency division multiplexing (OFDM) communication system. The proposed JBSTBC-MIMO-OFDM scheme is suitable for multiple-input-multiple-output (MIMO) communication systems whose major functionality is composed of space-time block encoder and its block-ordered decoder incorporated with joint transmit and receive eigen-beamformers. Among those, the joint eigen-beamformers are utilized for decorrelating fading channels so as to enhance spatial diversity gain. Moreover, in order to fortify the capability of "successive signal separation" in the block-ordered decoding process, a simple ad-hoc transmit power allocation scheme, based on a particular power discrimination function (PDF), is developed in this paper.

Keywords

MIMO systems; OFDM modulation; beam steering; block codes; decorrelation; diversity reception; fading channels; source separation; space-time codes; JBSTBC; MIMO-OFDM scheme; PDF; ad-hoc transmit power allocation scheme; block-ordered decoder; fading channel decorrelation; joint transmit/receive eigenbeamformers; orthogonal frequency division multiplexing; power discrimination function; space-time block coding; space-time block encoder; spatial diversity gain; successive signal separation; Array signal processing; Block codes; Decoding; Decorrelation; Diversity methods; Fading; MIMO; OFDM; Proposals; Source separation;

fLanguage

English

Publisher

ieee

Conference_Titel

Intelligent Signal Processing and Communication Systems, 2004. ISPACS 2004. Proceedings of 2004 International Symposium on

Print_ISBN

0-7803-8639-6

Type

conf

DOI

10.1109/ISPACS.2004.1439046

Filename

1439046