DocumentCode :
1941907
Title :
An Effective MIMO-OFDM Transmission Scheme for IEEE 802.22 WRAN Systems
Author :
Kim, Hyunwook ; Kim, Jaewoon ; Yang, Suckchel ; Hong, Minki ; Yoo, Myungsik ; Lee, Woncheol ; Shin, Yoan
Author_Institution :
School of Electronic Engineering, Soongsil University, 1 Sangdo-dong, Dongjak-gu, Seoul 156-743, Korea, E-mail: hwkim@amcs.ssu.ac.kr
fYear :
2007
fDate :
1-3 Aug. 2007
Firstpage :
394
Lastpage :
399
Abstract :
In this paper, we propose a closed-loop MIMO-OFDM (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 MIMOq-OFDM system even considering the feedback overhead of the system.
Keywords :
Antenna feeds; Array signal processing; Bandwidth; Bit error rate; Chromium; Cognitive radio; Feedback; MIMO; OFDM; TV; Grassmannian beamforming; IEEE 802.22; MIMO-OFDM; WRAN; antenna selection; cognitive radio;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Cognitive Radio Oriented Wireless Networks and Communications, 2007. CrownCom 2007. 2nd International Conference on
Conference_Location :
Orlando, FL, USA
Print_ISBN :
978-1-4244-0814-6
Electronic_ISBN :
978-1-4244-0815-3
Type :
conf
DOI :
10.1109/CROWNCOM.2007.4549830
Filename :
4549830
Link To Document :
بازگشت