Research Article
An Effective MIMO-OFDM Transmission Scheme for IEEE 802.22 WRAN Systems
@INPROCEEDINGS{10.1109/CROWNCOM.2007.4549830, author={Hyunwook Kim and Jaewoon Kim and Suckchel Yang and Minki Hong and Myungsik Yoo and Woncheol Lee and Yoan Shin}, title={An Effective MIMO-OFDM Transmission Scheme for IEEE 802.22 WRAN Systems}, proceedings={2nd International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications}, publisher={IEEE}, proceedings_a={CROWNCOM}, year={2008}, month={6}, keywords={Grassmannian beamforming IEEE 802.22 MIMO-OFDM WRAN antenna selection cognitive radio}, doi={10.1109/CROWNCOM.2007.4549830} }- Hyunwook Kim
Jaewoon Kim
Suckchel Yang
Minki Hong
Myungsik Yoo
Woncheol Lee
Yoan Shin
Year: 2008
An Effective MIMO-OFDM Transmission Scheme for IEEE 802.22 WRAN Systems
CROWNCOM
IEEE
DOI: 10.1109/CROWNCOM.2007.4549830
Abstract
In this paper, we propose a closed-loop MIMOOFDM (Multiple Input Multiple Output-Orthogonal Frequency Division Multiplexing) transmission scheme that is appropriate for the IEEE 802.22 WRAN (Wireless Regional Area Network) channel environments. The proposed scheme utilizes the Grassmannian beamforming and an antenna selection algorithm proposed by the authors to maintain BER (Bit Error Rate) performance and to reduce feedback information. To further reduce the feedback information considering channel property of the IEEE 802.22 WRAN, the proposed scheme employs an extension of the feedback period. Simulation results in the IEEE 802.22 WRAN reference channel models indicate that the proposed MIMO-OFDM transmission scheme achieves superior BER performance and spectral efficiency than open-loop MIMOOFDM system even considering the feedback overhead of the system.