A Near-Optimal Low-Complexity Transceiver for CP-Free Multi-Antenna OFDM Systems(Wireless Communication Technologies)
スポンサーリンク
概要
- 論文の詳細を見る
Conventional orthogonal frequency division multiplexing (OFDM) system utilizes cyclic prefix (CP) to remove the channel-induced inter-symbol interference (ISI) at the cost of lower spectral efficiency. In this paper, a generalized sidelobe canceller (GSC) based equalizer for ISI suppression is proposed for uplink multi-antenna OFDM systems without CP. Based on the block representation of the CP-free OFDM system, there is a natural formulation of the ISI suppression problem under the GSC framework. By further exploiting the signal and ISI signature matrix structures, a computationally efficient partially adaptive (PA) implementation of the GSC-based equalizer is proposed for complexity reduction. The proposed scheme can be extended for the design of a pre-equalizer, which pre-suppresses the ISI and realizes CP-free downlink transmission to ease the computational burden of the mobile unit (MU). Simulation results show that the proposed GSC-based solutions yield equalization performances almost identical to that obtained by the conventional CP-based OFDM systems and are highly resistant to the increase in channel delay spread.
- 社団法人電子情報通信学会の論文
- 2006-01-01
著者
-
LEE Ta-Sung
Department of Communication Engineering and Microelectronics and Information Systems Research Center
-
LIN Chih-Yuan
Department of Materials Science and Engineering, National Tsing Hua University
-
Lin Chih-yuan
Department Of Communication Engineering And Microelectronics And Information Systems Research Center
-
WU Jwo-Yuh
Department of Communication Engineering and Microelectronics and Information Systems Research Center
-
Wu Jwo-yuh
Department Of Communication Engineering And Microelectronics And Information Systems Research Center
-
Lee Ta-sung
Department Of Communication Engineering And Microelectronics And Information Systems Research Center
関連論文
- A Space-Time Multi-Carrier CDMA Receiver with Blind Adaptive MAI Suppression
- Effect of Al on Bulk Amorphization and Magnetic Properties of FeSnPSiB Alloys
- A Near-Optimal Low-Complexity Transceiver for CP-Free Multi-Antenna OFDM Systems(Wireless Communication Technologies)
- A Low-Complexity Multi-User CDMA Receiver with Blind Channel Estimation and Partially Adaptive MAI Suppression(Wireless Communication Technology)
- An OSIC Based Reduced-Rank MIMO Equalizer Using Conjugate Gradient Algorithm(Wireless Communication Technology)
- A closed-form phase-comparison ML DOA estimator for automotive radar with one single snapshot