Enhanced detection method for 3GPP LTE QO-SFBC system in frequency selective Rayleigh fading channel environment

Authors:
Hwan Min Park;Jung Su Han;Hyung-Jin Choi
Affiliations:
Sungkyunkwan University, Korea;Sungkyunkwan University, Korea;Sungkyunkwan University, Korea
Venue:
Proceedings of the 4th International Conference on Uniquitous Information Management and Communication
Year:
2010

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Abstract

In this paper, interference mitigation techniques are used to solve the co-antenna interference problem for quasi orthogonal (QO)-space frequency block coding (SFBC) in frequency selective channel. The variation of channel frequency responses (CFR) of SFBC at adjacent subcarriers reduces the gain of diversity of multiple input multiple output (MIMO) and causes interferences additively. The proposed SFBC receiver based on zero forcing (ZF) and minimum mean square error (MMSE) can mitigate the interferences between antennas. The simulation results show that the MMSE receiver combined with the proposed algorithm can achieve better performance than conventional method when frequency selectivity is high.