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This study presents a spread-spectrum chaos-based communication system with polarisation diversity in a multipath channel. The propagation model takes into account the random direction angle of arrival and the polarisation orientation assigned to each version of the transmitted signal. To improve the performance of the proposed system, the receiver integrates monopoles with different orientations and no space diversity. Once the number of antennas is defined, many antenna positions are simulated, and then the optimal position is deduced to improve the performance of the system. To demodulate the received signal, a RAKE receiver is used for multi-antenna processing. An analysis is carried out leading to the analytical expression of the system bit error rate (BER). Simulation results show first that our system performance is improved with the use of this new receiver, and the perfect match observed between simulations and analytical BER expressions confirms the exactitude of our computation approach. Finally, the performance of our studied system is compared and discussed to that of a conventional spread-spectrum system using gold codes as spreading sequences.
References
-
-
1)
-
Michaels, A.J., Chester, D.B.: `Efficient and flexible chaotic communication waveform family', Proc. Int. IEEE Military Communications Conf., 2010, San Jose, USA.
-
2)
-
Heidari-Bateni, G., McGillem, C.D.: `Chaotic sequences for spread spectrum: an alternative to pn-sequences', Proc. Int. IEEE Conf. in Wireless Communications, 1997, Vancouver, Canada, p. 437–440.
-
3)
-
Kolumbán, G., Vizvari, G.K., Schwarz, W., Abel, A.: `Differential chaos shift keying: a robust coding for chaos communication', Proc. Int. Workshop on Non-linear Dynamics of Electronic Systems, 1996, Seville, Spain, p. 92–97.
-
4)
-
J.F. Valenzuela-Valdes ,
M.A. Garcia-Fernandez ,
A.M. Martinez-Gonzalez ,
D.A. Sanchez-Hernandez
.
Evaluation of true polarization diversity for MIMO systems.
IEEE Trans. Antennas Propag.
,
9 ,
2746 -
2755
-
5)
-
G. Kolumbán ,
M.P. Kenedy ,
L.O. Chua
.
The role of synchronization in digital communications using chaos-Part I: fundamentals of digital communication.
IEEE Trans. Circuits Syst. I: Fundam. Theory Appl.
,
927 -
936
-
6)
-
W.M. Tam ,
F.C.M. Lau ,
C.K. Tse ,
A.J. Lawrance
.
Exact analytical bit error rate for multiple access chaos-based communication systems.
IEEE Trans. Circuits Systems I: Fundam. Theory Appl.
,
473 -
481
-
7)
-
M.P. Kennedy ,
G. Kolumban ,
G. Kis ,
Z. Jako
.
Performance evaluation of FM-DCSK modulation in multipath environments.
IEEE Trans. Circuits Syst. I, Fundam. Theory Appl.
,
12 ,
1702 -
1711
-
8)
-
J. Yu ,
Y. Yao
.
Detection performance of chaotic spreading LPI waveforms.
IEEE Trans. Wirel. Commun.
,
390 -
396
-
9)
-
Q. Ding ,
J. Wang
.
Design of frequency-modulated correlation delay shift keying chaotic communication system.
IET Commun.
,
7 ,
901 -
905
-
10)
-
W.M. Tam ,
F.C.M. Lau ,
C.K. Tse
.
An approach to calculating the bit error rate of a coherent chaos-shift-keying digital communication system under a noisy multiuser environment.
IEEE Trans. Circuits Syst, I: Fundam. Theory Appl.
,
210 -
223
-
11)
-
Erhel, Y., Lambard, T.: `A polarization sensitive array for DVB-H applications', Seventh Int. Conf. on ITS, 2007, p. 1–4.
-
12)
-
S.H. Isabelle ,
G.W. Wornell
.
Statistical analysis and spectral estimation techniques for one-dimensional chaotic signals.
Trans. Signal Process.
,
1495 -
1497
-
13)
-
J.F. Valenzuela-Valdes ,
M.A. Garcia-Fernandez ,
A.M. Martinez-Gonzalez ,
D. Sanchez-Hernandez
.
The role of polarization diversity for mimo systems under Rayleigh-fading environments.
IEEE Antennas Wirel. Propag. Lett.
,
534 -
536
-
14)
-
R. Rovatti ,
G. Setti ,
G. Mazzini
.
Chaotic complex spreading sequences for asynchronous DS-CDMA - Part II: Some theoretical performance bounds.
IEEE Trans. Circuits Syst. I, Fundam. Theory Appl.
,
4 ,
496 -
506
-
15)
-
Kolumbán, G., Kis, G.: `Multipath performance of FM-DCSK chaos communications system', Int. Conf. Circuits and Systems, 2000, Genova, Switzerland, p. 433–436.
-
16)
-
A.P. Kurian ,
S. Puthusserypady ,
S.M. Htut
.
Performance enhancement of DS-CDMA system using chaotic complex spreading sequence.
Wirel. Commun. Trans.
,
984 -
989
-
17)
-
G. Kaddoum ,
P. Chargé ,
D. Roviras ,
D. Fournier-Prunaret
.
(2009)
A methodology for bit error rate prediction in chaos-based communication systems, .
-
18)
-
U. Parlitz ,
L.O. Chua ,
Lj. Kocarev ,
K.S. Halle ,
A. Shang
.
Transmission of digital signals by chaotic synchronization.
Int. J. Bifurcation Chaos Appl. Sci. Eng.
,
973 -
977
-
19)
-
R.L. Peterson ,
R.E. Ziemer ,
D.E. Borth
.
(1995)
Introduction to spread spectrum communications.
-
20)
-
G. Mazzini ,
R. Rovatti ,
G. Setti
.
Chaos-based asynchronous DS-CDMA systems and enhanced rake receivers: measuring the improvements.
IEEE Trans. Circuits Syst. I
,
12 ,
1445 -
1453
-
21)
-
C.B. Dietrich ,
K. Dietze ,
J.R. Nealy ,
W.L. Stutzman
.
Spatial, polarization, and pattern diversity for wireless handheld terminals.
IEEE Trans. Antennas Propag.
,
9 ,
1271 -
1281
-
22)
-
X. Min ,
W. Xu ,
L. Wang ,
G. Chen
.
Promising performance of a frequency-modulated differential chaos shift keying ultra-wideband system under indoor environments.
IET Commun.
,
2 ,
125 -
134
-
23)
-
A.J. Lawrance ,
G. Ohama
.
Exact calculation of bit error rates in communication systems with chaotic modulation.
IEEE Trans. Circuits Syst. I: Fundam. Theory Appl.
,
1391 -
1400
-
24)
-
G. Kaddoum ,
D. Roviras ,
P. Chargé ,
D. Fournier-Prunaret
.
Accurate bit error rate calculation for asynchronous chaos-based DS-CDMA over multipath channel.
EURASIP J. Adv. Signal Process.
-
25)
-
P. Chargé ,
D. Fournier-Prunaret ,
V. Guglielmi
.
Features analysis of a parametric PWL chaotic map and its utilization for secure transmissions.
Chaos Solitons Fractals (UK)
,
1411 -
1422
-
26)
-
G. Mazzini ,
G. Setti ,
R. Rovatti
.
Chaotic complex spreading sequences for asynchronous DS-CDMA part I: system modeling and results.
IEEE Trans. Circuits Systems I: Fundam. Theory Appl.
,
937 -
1947
-
27)
-
R. Vali ,
S. Berber ,
S. Nguang
.
Effect of Rayleigh fading on non-coherent sequence synchronization for multi-user chaos based DS-CDMA.
Signal Process.
,
1924 -
1939
-
28)
-
S. Kozono ,
T. Tsuruhara ,
M. Sakamoto
.
Base station polarization diversity reception for mobile radio.
IEEE Trans. Veh. Technol.
,
4 ,
301 -
306
-
29)
-
Chester, D.B., Michaels, A.J.: `Spread spectrum communications system and method utilizing chaotic sequence', US, US7062320, 2008, 2008.
-
30)
-
G. Kaddoum ,
D. Roviras ,
P. Charge ,
D. Fournier-Prunaret
.
Robust synchronization for asynchronous multi-user chaos-based DS-CDMA.
Signal Process.
,
807 -
818
-
31)
-
F.C.M. Lau ,
C.K. Tse
.
(2003)
Chaos-based digital communication systems.
-
32)
-
G. Kolumbán ,
M.P. Kenedy ,
L.O. Chua
.
The role of synchronization in digital communications using chaos – Part II: chaotic modulation and chaotic synchronization.
IEEE Trans. Circuits Syst. I: Fundam. Theory Appl.
,
1129 -
1140
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