| Budget Amount *help |
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2013: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
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| Outline of Final Research Achievements |
This project proposed a new design of time domain TS signal of using time domain triangular window function for DFTS-OFDM and OFDM signals which can reduce the undesirable spectrum regrowth with keeping higher CIR estimation accuracy.This project also proposed a time domain equalization (TDE) method of using CIR matrix in the time domain. The salient feature of proposed TDE method is to employ the partial differentiation for the time domain CIR matrix in solving the maximum likelihood (ML) equation. By using the partial differentiation, the coefficient matrix of simultaneous equations becomes the perfect symmetric banded matrix which enables to employ a low-complexity parallel blocks inverse matrix algorithm. From various computer simulation results, it was concluded that the proposed channel estimation and TDE methods can achieve higher estimation accuracy and better BER performance as compared with the conventional methods in higher time-varying fading channels.
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