Title :
A Novel ZF Detection Scheme for Double SFBC based OFDM System in Frequency Selective Fading Channel
Author :
Chanho Yoon ; Jungbo Son ; Sok-kyu Lee
Author_Institution :
ETRI, Daejeon
Abstract :
In this paper, we propose an efficient low complexity MIMO detection method for double space-frequency block coded (D-SFBC) OFDM system. The proposed MIMO detector involves three-step filtering process to efficiently de-correlate spatially-multiplexed / space-frequency-coded signals without direct matrix inversion process. As the proposed MIMO detector takes advantage of frequency selectivity, not a favorable channel condition for SFBC system, performance degradation caused by low correlation between two consecutive subcarriers is compensated by assigning weighting factor for every subcarriers in frequency domain. From computer simulation results, our scheme in D-SFTD outperforms previously proposed suboptimal MIMO detection methods such as iterative interference cancellation based V-BLAST.
Keywords :
MIMO communication; OFDM modulation; block codes; fading channels; interference suppression; MIMO detection; OFDM system; V-BLAST; ZF detection; channel condition; double SFBC; double space-frequency block code; frequency selective fading channel; iterative interference cancellation; Computer simulation; Degradation; Detectors; Fading; Filtering; Frequency domain analysis; Iterative methods; MIMO; OFDM; Signal processing;
Conference_Titel :
Communications, 2007. ICC '07. IEEE International Conference on
Conference_Location :
Glasgow
Print_ISBN :
1-4244-0353-7
DOI :
10.1109/ICC.2007.423