| Summary: | 碩士 === 國立中央大學 === 通訊工程研究所 === 91 ===
In this thesis, we consider a novel class of Orthogonally-Multiplexed Orthogonal Modulation(OMOM)[4][5] by using adaptive modulation technique including three methods of variable-rate variable-power, constant power and constant rate. Under average bit error rate constraint, we choose suitable parameter of OMOM or transmitted power to maximize spectral efficiency according to the channel quality. Considering the frequency-nonselective, slowly Nakagami-fading channel, we find the optimal switch boundary and adapted power of each used modulation parameter. We can find that the variable-rate variable-power method get larger spectral efficiency, but it need larger transmitted power.
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