Low-Complexity Demodulation for Interleaved OFDMA Downlink System Using Circular Convolution
Information Theory
2014-05-16 v2 math.IT
Abstract
In this paper, a new low-complexity demodulation scheme is proposed for interleaved orthogonal frequency division multiple access (OFDMA) downlink system with N subcarriers and M users using circular convolution. In the proposed scheme, each user's signal is extracted from the received interleaved OFDMA signal of M users by using circular convolution in the time domain and then fast Fourier transformed in the reduced size N over M. It is shown that the computational complexity of the proposed scheme for the interleaved OFDMA downlink system is much less than that of the conventional one.
Cite
@article{arxiv.1210.5292,
title = {Low-Complexity Demodulation for Interleaved OFDMA Downlink System Using Circular Convolution},
author = {Hyun-Seung Joo and Kee-Hoon Kim and Jong-Seon No and Dong-Joon Shin},
journal= {arXiv preprint arXiv:1210.5292},
year = {2014}
}
Comments
This paper has been withdrawn by the author due to a crucial error