کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6889411 | 697689 | 2016 | 23 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Performance evaluation of chaotic spreading sequences in a multi-user MIMO-OFDM system
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی کامپیوتر
شبکه های کامپیوتری و ارتباطات
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Performance evaluation of chaotic spreading sequences in a multi-user MIMO-OFDM system Performance evaluation of chaotic spreading sequences in a multi-user MIMO-OFDM system](/preview/png/6889411.png)
چکیده انگلیسی
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.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physical Communication - Volume 19, June 2016, Pages 11-17
Journal: Physical Communication - Volume 19, June 2016, Pages 11-17
نویسندگان
Asma Ahmadinejad, Siamak Talebi,