Performance improvement of TH-CDMA UWB system using chaotic sequence and GLS optimization

被引：0
作者：
Anis Naanaa
机构：
[1] National Engineering School of Tunis (ENIT),Sys’com Laboratory
来源：
Nonlinear Dynamics | 2015年 / 80卷
关键词：
Ultra-wideband; Multi-user interference; Chaotic sequences; Guided local search; Bit error rate;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The multi-user interference is an important factor that significantly affects the performance of ultra- wideband (UWB) system. Due to this assumption, we suggest a code optimization to reduce collisions with other users in time hopping-code division multiple access (TH-CDMA) for UWB system indoor communication with line-of-sight residential. To solve a code optimization problems, guided local search algorithm has been applied. To evaluate our method, we tackle the bit error rate (BER) performance analysis. Computer simulation results have shown that optimized skew tent map chaotic-TH-CDMA sequences achieve considerable improvement in terms of the BER that justifies the optimization process.
引用
收藏
页码：739 / 752
页数：13
相关论文
共 22 条
[1]  
Ying-Qian Z(2014)A symmetric image encryption algorithm based on mixed linear nonlinear coupled map lattice Inf. Sci. 273 329-351
[2]  
Xing-Yuan W(2014)Spatiotemporal chaos in mixed linear nonlinear coupled logistic map lattice Phys. A 402 104-118
[3]  
Ying-Qian Z(2000)Ultra-wide bandwidth time hopping spread-spectrum impulse radio for wireless multiple access communications IEEE Trans. Commun. 48 679-691
[4]  
Xing-Yuan W(1982)Error probability for direct-sequence spread-spectrum multiple-access communications Part II: approximations IEEE Trans. Commun. 30 985-995
[5]  
Win MZ(2000)A new family of frequency hop codes IEEE Trans. Commun. 48 1241-1244
[6]  
Scholtz RA(2005) Uncoordinated wireless baseborn medium access for UWB communication networks Mob. Netw. Appl. 10 663-674
[7]  
Geraniotis E(2012)Improvement performance of TH-UWB system using spatiotemporal chaotic sequences Chaotic Model. Simul. (CMSIM) 1 185-194
[8]  
Pursley M(2011)Performance enhancement of TH-UWB system using combinatorial optimization J. IET Commun. 5 2212-2220
[9]  
Moreno O(1987)A statistical model for indoor multipath propagation IEEE J. Sel. Areas Commun. 5 128-137
[10]  
Maric SV(2010)An improved key agreement protocol based on chaos Commun. Nonlinear Sci. Numer. Simul. 15 4052-4057
123