Sparse information recovery in OFDM environment

An information recovery technique for Orthogonal Frequency Division Multiplexing (OFDM) environments is presented in this paper. It uses fewer OFDM symbols at the side of the receiver as input to the Discrete Fourier Transform (DFT) exploiting the sparse nature of the original data and the properties of the DFT. The Forward Error Correction (FEC) technique employed can further assist the successful information recovery from fewer samples. Up to ¼ of the samples can be omitted and replaced by others at the side of the receiver, reducing the buffer memory size used for sample storage by up to 25% and simplifying the complexity and the power consumption of the DFT and Analog Digital Converter (ADC) implementation.