A precoding scheme for DFT-based OFDM to suppress sidelobes

Authors:
Renhui Xu;Ming Chen
Affiliations:
NCRL, SEU, Nanjing, China and Institute of Communication Engineering, PLA University of Science and Technology;NCRL, SEU, Nanjing, China
Venue:
IEEE Communications Letters
Year:
2009

Citing 4
Cited 0

N-continuous OFDM

IEEE Communications Letters
OFDM transmitters: analog representation and DFT-based implementation

IEEE Transactions on Signal Processing
Complex-field coding for OFDM over fading wireless channels

IEEE Transactions on Information Theory
Spectrum pooling: an innovative strategy for the enhancement of spectrum efficiency

IEEE Communications Magazine

Quantified Score

Hi-index	0.00

Visualization

Abstract

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.