| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2013: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Outline of Final Research Achievements |
In this study, an optical wireless orthogonal frequency division multiplexing (OFDM) system that uses circular polarization was proposed in order to achieve a power-efficient optical wireless OFDM with intensity modulation/direct detection. The proposed system divides OFDM signals into positive and negative parts. Then, it converts these divided signals into left-handed and right-handed polarization, and transmits them. This study showed that the proposed system required 1/5 times as much as the optical power the conventional DCO-OFDM system required when achieving a bit error rate of 1.0x10e-5 and the same data transmission rate. In addition, this study provided a theoretical analysis of the bit error rate performance of the proposed system. It fully considered the influence of the division of OFDM signals into positive and negative parts. The results of the theoretical analysis were generally coincident with those of the simulation results.
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