Summary

2007 International Symposium on Nonlinear Theory and its Applications

2007

Session Number:17PM2-C

Session:

Number:17PM2-C-1

ADAPTIVE TRANSMISSION POWER CONTROL FOR MIMO DIVERSITY EMPLOYING POLARIZATION DIVERSITY IN OFDM RADIO ACCESS

Tsutomu Ohno,  Iwao Sasase,  

pp.79-83

Publication Date:2007/9/16

Online ISSN:2188-5079

DOI:10.34385/proc.41.17PM2-C-1

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Summary:
This paper proposes an adaptive transmission power control scheme between cross-polarized transmission antennas for multiple- input multiple-output (MIMO) diversity using polarization diversity in orthogonal frequency division multiplexing (OFDM), in order to mitigate the degradation due to the effect of cross polarization discrimination (XPD). In the proposed scheme, the transmission power of each cross-polarized channel is controlled so that it is proportional to the instantaneous received signal power of the cross-polarized channel measured at each polarized branch of a receiver. It is shown by computer simulation that the required average signal energy per bit-to-noise power spectrum density ratio (Eb/N0) at the bit error rate of 10-3 using the proposed method is reduced by approximately 1 dB compared to that of the conventional polarization diversity without using transmission power control in MIMO-OFDM radio access.