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From the mathematic expression, we can see that sidelobe power of multi-band orthogonal frequency-division multiplexing (MB-OFDM) signal is a function of the data symbols loaded on the sub-carriers. Through the derivation of the minimum of the function, relationships among data symbols, which help to suppress sidelobes, are obtained. Two types of methods, referred as sub-carrier adding (SA) method...
We consider the problem of approximately feedback linearizing a multi-input nonlinear system around the equilibrium manifold ?? while making the error terms be of highest order on ??. Necessary and sufficient conditions are given for approximately feedback linearizing the system around ?? with error terms of order ?? on ??.
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