Experimental Investigation and Modeling of the Throughput of a 2×2 Closed-Loop MIMO System in a Reverberation Chamber
Journal article, 2014

Throughputs of 2 x 2 long term evolution (LTE) multiple-input multiple-output (MIMO) systems in both open-and closed-loop configurations have been studied previously. However, in the previous work, the study of the closed-loop MIMO system is limited to receive semi-correlation (i.e., correlations exist only at the receive side only), resulting in inaccurate modeling of the closed-loop throughput with large transmit antenna correlations and incomplete conclusion about the effectiveness of codebook based precoding based on 2-bit feedback. In this work, the effect of the transmit antenna correlation on the closed-loop throughput is examined. Unlike in the previous work, an inversely weighted mean square error (MSE) matrix is proposed as the precoding selection criterion, resulting in good agreements between the simulations and the RC measurements of a closed-loop LTE system with various correlations. It is found that the closed-loop MIMO system is superior to its open-loop counterpart in the presence of large transmit antenna correlation in the low and medium signal-to-noise (SNR) regimes.

Long term evolution (LTE)

reverberation chamber (RC)

multiple-input multiple-output (MIMO)

throughput

Author

Chen Xiaoming

Chalmers, Signals and Systems, Communication and Antenna Systems, Antennas

IEEE Transactions on Antennas and Propagation

0018-926X (ISSN)

Vol. 62 9 4832-4835 2330599

Areas of Advance

Information and Communication Technology

Subject Categories

Electrical Engineering, Electronic Engineering, Information Engineering

DOI

10.1109/TAP.2014.2330599

More information

Created

10/7/2017