Performance Comparison of Coherent versus Incoherent Direct Sequence Optical Code Division Multiple Access System

被引：3

作者：

Farhat, Amel ^{[1
,4
]}

Menif, Mourad ^{[2
]}

Lepers, Catherine ^{[3
]}

Rezig, Houria ^{[1
]}

Gallion, Philippe ^{[4
]}

机构：

[1] Ecole Natl Ingenieurs Tunis, Lab SYSCOM, BP 37, Tunis 1020, Tunisia

[2] Ecole Super Commun, UR CIRTACOM, El Ghazala 2083, Ariana, Tunisia

[3] Univ Lille I, CNRS UMR 8523, Lab PhLAM, F-59650 Villeneuve Dascq, France

[4] Ecole Natl Super Telecommun Bretagne, TELECOM ParisTech, CNRS LTCI UMR 5141, F-75013 Paris, France

来源：

PHOTONICS NORTH 2008 | 2008年 / 7099卷

关键词：

DS-OCDMA; unipolar codes; coherent source; Monte Carlo; Importance Sampling; beat noise;

D O I：

10.1117/12.806880

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this paper, we compare the performances of a coherent versus incoherent Direct Sequence Optical Code Division Multiple Access (DS-OCDMA) system. Superstructured Fiber Bragg Grating (S-FBG) encoders/decoders are used to implement unipolar codes such as Prime Sequence (PS) and Extended Quadratic Codes (EQC) codes. We implement the Importance Sampling (IS) technique, which is a variant of the well-known Monte-Carlo (MC) method, to evaluate the Bit Error Rate (BER) performances of the system. Our simulation results depict that coherent system outperforms the incoherent one. The last system can be used but a BER floor is demonstrated due to the beat noise of the incoherent source. We show that increasing bit rate leads to a deterioration of the BER behavior and requiring an increase of the optical bandwidth of the signal.

引用

页数：9

共 50 条

[1] PERFORMANCE EVALUATION OF COHERENT OPTICAL CODE DIVISION MULTIPLE ACCESS
BENEDETTO, S
OLMO, G
[J]. ELECTRONICS LETTERS, 1991, 27 (22) : 2000 - 2002
[2] Incoherent optical code division multiple access systems
Andonovic, I
Tancevski, L
[J]. IEEE ISSSTA '96 - IEEE FOURTH INTERNATIONAL SYMPOSIUM ON SPREAD SPECTRUM TECHNIQUES & APPLICATIONS, PROCEEDINGS, VOLS 1-3, 1996, : 424 - 430
[3] Interferometric noise analysis of an optical incoherent code division multiple access system
Kakkouras, A
Andonovic, I
[J]. INTERNATIONAL JOURNAL OF OPTOELECTRONICS, 1997, 11 (01): : 11 - 18
[4] Performance of narrowband interference suppression filters in a direct sequence code division multiple access system
Cho, YK
Lee, JH
[J]. ICUPC '96 - 1996 5TH IEEE INTERNATIONAL CONFERENCE ON UNIVERSAL PERSONAL COMMUNICATIONS RECORD, VOLS 1 AND 2, 1996, : 169 - 173
[5] On PN code Acquisition in Direct Sequence Code Division Multiple Access
Asoodeh, S.
Maddahi, H.
[J]. 2007 INTERNATIONAL CONFERENCE ON WIRELESS COMMUNICATIONS, NETWORKING AND MOBILE COMPUTING, VOLS 1-15, 2007, : 1433 - +
[6] The effect of four wave mixing on bit error rate performance of a direct sequence optical code division multiple access system
Majumder, SP
Uddin, MF
[J]. 2005 Asia-Pacific Conference on Communications (APCC), Vols 1& 2, 2005, : 1038 - 1042
[7] Coherent direct sequence optical code multiple access encoding-decoding efficiency versus wavelength detuning
Pastor, D.
Amaya, W.
Garcia-Olcina, R.
Sales, S.
[J]. OPTICS LETTERS, 2007, 32 (13) : 1896 - 1898
[8] Source coherence impairments in a direct detection direct sequence optical code-division multiple-access system
Fsaifes, Ihsan
Lepers, Catherine
Lourdiane, Mounia
Gallion, Philippe
Beugin, Vincent
Guignard, Philippe
[J]. APPLIED OPTICS, 2007, 46 (04) : 456 - 462
[9] Direct Sequence code division multiple access with Optical Multicarriers and Parallel FEC codes
Yaqub, RP
Nakagawa, M
[J]. IEICE TRANSACTIONS ON COMMUNICATIONS, 1998, E81B (04) : 785 - 797
[10] Code sequence analysis in asynchronous coherent time-spreading optical code-division multiple access
Ji, Jianhua
Xu, Ming
Yang, Shuwen
[J]. JOURNAL OF OPTICAL NETWORKING, 2009, 8 (01): : 26 - 32

← 1 2 3 4 5 →