Efficient Link Adaptation Scheme using Precoding for LTE-Advanced Uplink MIMO 


Vol. 36,  No. 2, pp. 159-167, Feb.  2011


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  Abstract

LTE-Advanced system requires uplink multi-antenna transmission in order to achieve the peak spectral efficiency of 15bps/㎐. In this paper, the uplink MIMO system model for the LTE-Advanced is proposed and an efficient link adaptation shceme using precoding is considered providing error rate reduction and system capacity enhancement. In particular, the proposed scheme determines a transmission rank by selecting the optimal wideband precoding matrix, which is based on the derived signal-to-interference and noise ratio (SINR) for the minimum mean squared error (MMSE) receivers of 2×4 multiple input multiple output (MIMO). The proposed scheme is verified by simulation with a practical MIMO channel model. The simulation results of average block-error-rate(BLER) reflect that the gain due to the proposed rank adapted transmission over full-rank transmission is evident particularly in the case of lower modulation and coding scheme (MCS) and high mobility, which means the severe channel fading environment.

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  Cite this article

[IEEE Style]

O. Park and J. Ahn, "Efficient Link Adaptation Scheme using Precoding for LTE-Advanced Uplink MIMO," The Journal of Korean Institute of Communications and Information Sciences, vol. 36, no. 2, pp. 159-167, 2011. DOI: .

[ACM Style]

Ok-Sun Park and Jae-Min Ahn. 2011. Efficient Link Adaptation Scheme using Precoding for LTE-Advanced Uplink MIMO. The Journal of Korean Institute of Communications and Information Sciences, 36, 2, (2011), 159-167. DOI: .

[KICS Style]

Ok-Sun Park and Jae-Min Ahn, "Efficient Link Adaptation Scheme using Precoding for LTE-Advanced Uplink MIMO," The Journal of Korean Institute of Communications and Information Sciences, vol. 36, no. 2, pp. 159-167, 2. 2011.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880