Lei Guowei
ABSTRACT
Orthogonal frequency division multiplexing (OFDM) is regarded as a popular technique. Moreover, OFDM combined with multiple-input multiple-output systems (MIMO)has drawn many interests. However, OFDM-MIMO systems with various modulations have not been investigated extensively to date. This letter is to draw a comparison among the linear and non-linear modulations. Especially, the random modulation index is introduced into the OFDM-MIMO system with CPM. Meanwhilethe OFDM-MIMO system with antenna selection and adaptive modulation is proposed.The performances for the proposed systems are evaluated via simulation.
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