Subspace based detection in MC-CDMA over dispersive channel

Author

Li, Chengyang ; Roy, Sumit

Author_Institution

Dept. of Electr. Eng., Washington Univ., Seattle, WA, USA

fYear

2000

fDate

2000

Firstpage

98

Lastpage

103

Abstract

A new blind MMSE detection for multi-carrier CDMA (MC-CDMA) over intersymbol interference (ISI) channels is proposed. The presence of virtual carriers is exploited to give a subspace based blind channel estimator followed by a linear MMSE equalizer. The proposed detector is attractive for its higher spectral efficiency, which is achieved by the elimination of cyclic prefix and training sequences. The complexity of the full dimension subspace detection can be reduced at the cost of some performance degradation. Representative results are provided to show the performance-complexity tradeoffs

Keywords

code division multiple access; computational complexity; dispersive channels; equalisers; intersymbol interference; least mean squares methods; parameter estimation; signal detection; ISI channels; MC-CDMA; blind MMSE detection; blind channel estimator; cyclic prefix elimination; dispersive channel; intersymbol interference; linear MMSE equalizer; multicarrier CDMA; performance-complexity tradeoff; spectral efficiency; subspace based detection; training sequence elimination; virtual carriers; Bandwidth; Costs; Detectors; Dispersion; Ear; Equalizers; Intersymbol interference; Multiaccess communication; Multicarrier code division multiple access; OFDM;

fLanguage

English

Publisher

ieee

Conference_Titel

Personal Wireless Communications, 2000 IEEE International Conference on

Conference_Location

Hyderabad

Print_ISBN

0-7803-5893-7

Type

conf

DOI

10.1109/ICPWC.2000.905781

Filename

905781