A Precoding Scheme for DFT-Based OFDM to Suppress Sidelobes

作者：Xu Renhui^*; Chen Ming

来源：IEEE Communications Letters, 2009, 13(10): 776-778.

DOI：10.1109/LCOMM.2009.091339

• OFDM
• DFT
• precoding
• power spectrum

In spectrum pooling scenario, the spectral leakage of DFT-based OFDM signal can be divided into in-band-out-of-subband (IBOSB) radiation and out-of-band (OOB) radiation. A precoding scheme is proposed to suppress the IBOSB sidelobes. The precoding design is based on the generalized eigenvalue problem. Simulation results demonstrate that the proposed scheme can suppress the sidelobes significantly in contrast to the uncoded schemes. At the same time, the Bit-Error-Rate (BER) performance of the precoded system over multipath fading channel is improved due to the frequency diversity.

• 出版日期2009-10
• 单位东南大学