| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 6889411 | Physical Communication | 2016 | 23 Pages |
Abstract
A transmission with an acceptable performance is an important issue and is a topic of immense interest in wireless communications. In this paper, we propose an innovative solution which hires chaos theory in a “multiple-input-multiple-output, orthogonal frequency division multiplexing, code-division multiple-access (MIMO OFDM-CDMA)” system. The main goal is to improve performance by using chaotic systems as spreading codes. Since autocorrelation is an important criterion in selecting spreading codes, we investigate the autocorrelations of chaotic codes so as to choose proper sequences for spreading. Simulation results have shown that this method has better performance in comparison with other spreading codes such as the Walsh-Hadamard (WH) codes. In other word, bit-error rate has been refined and more possible code sequences are available.
Related Topics
Physical Sciences and Engineering
Computer Science
Computer Networks and Communications
Authors
Asma Ahmadinejad, Siamak Talebi,