Efficient peak-to-average-power reduction for OFDM and MIMO-OFDM

摘要: Low-complexity computational processing provides a set of selective mapping weights for reducing peak-to-average-power ratio (PAPR) in transmitted Multiple Input, Output Orthogonal Frequency Division Multiplexing (MIMO-OFDM) signals. A MIMO precoder and invertible transform generates base discrete-time MIMO-OFDM signal from data symbols precoding weights. matrix multiplier multiplies the with sparse update weight matrix, resulting product is MIMO-precoded modulated onto an OFDM to produce signal. linear combiner sums updated which PAPR can be measured.