High bit rates for 3G and beyond using MIMO channels

Author

Hottinen, Ari ; Vesma, Jussi ; Tirkkonen, Olav ; Nefedov, Nikolai

Author_Institution

Nokia Group, Nokia Res. Center, Espoo, Finland

Volume

2

fYear

2002

fDate

15-18 Sept. 2002

Firstpage

854

Abstract

This paper studies the applicability of selected high rate open-loop space-time codes and closed-loop beamforming concepts for future wireless systems, such as WCDMA/HSDPA. Several spectrally efficient space-time codes are evaluated and their performance is compared to related closed-loop concepts, where a feedback link from the receiver is used to aid (downlink) beamforming. The comparison is based on schemes that attain 4bps/Hz spectral efficiency, where either two parallel QPSK streams or a single 16-QAM stream is transmitted using up to four transmit antennas, and one or two receive antennas.

Keywords

3G mobile communication; MIMO systems; adaptive antenna arrays; array signal processing; block codes; feedback; quadrature amplitude modulation; quadrature phase shift keying; receiving antennas; space-time codes; transmitting antennas; 16-QAM stream; 3G; MIMO channels; QPSK streams; WCDMA/HSDPA; closed-loop beamforming; downlink beamforming; feedback link; high bit rates; nonorthogonal space-time block codes; open-loop space-time codes; orthogonal space-time block codes; performance; receive antennas; receiver; spectrally efficient space-time codes; transmit antennas; wireless systems; Array signal processing; Bit rate; Downlink; Feedback; MIMO; Multiaccess communication; Quadrature phase shift keying; Receiving antennas; Space time codes; Transmitting antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Personal, Indoor and Mobile Radio Communications, 2002. The 13th IEEE International Symposium on

Print_ISBN

0-7803-7589-0

Type

conf

DOI

10.1109/PIMRC.2002.1047343

Filename

1047343