On the channel capacity of two-dimensional FSO/CDMA systems over atmospheric turbulence channels

We quantitatively study the performance limits of two-dimensional (2-D) free-space optical code-division multiple-access (FSO/CDMA) systems over weak and strong atmospheric turbulence channels. The theoretical bounds for channel capacity are derived taking into account multiple-access interference (MAI), optical beating interference (OBI) and receiver noise. Forward error correction (FEC) codes are employed to mitigate the impact of turbulence. We find that the impact of atmospheric turbulence on the channel capacity limit is severe, especially when the turbulence is strong. The channel capacity limit is decreased as much as 16% when turbulence variance σs2 = 0.6178.

[1]  I. Sasase,et al.  BER Performance Analysis of Spectral Phase-Encoded Optical Atmospheric PPM-CDMA Communication Systems , 2007, Journal of Lightwave Technology.

[2]  Robert H. Morelos-Zaragoza,et al.  The Art of Error Correcting Coding: Morelos-Zaragoza/The Art of Error Correcting Coding, Second Edition , 2006 .

[3]  Jawad A. Salehi,et al.  Atmospheric optical CDMA communication systems via optical orthogonal codes , 2006, IEEE Transactions on Communications.

[4]  Jan Bajcsy,et al.  Analysis of Optical CDMA Signal Transmission: Capacity Limits and Simulation Results , 2005, EURASIP J. Adv. Signal Process..

[5]  H. A. Willebrand,et al.  Fiber optics without fiber , 2001 .

[6]  Leslie A. Rusch,et al.  Impact of the beat noise on the performance of 2-D optical CDMA systems , 2000, IEEE Communications Letters.

[7]  Edward H. Sargent,et al.  The role of optical CDMA in access networks , 2002 .

[8]  Hossam M. H. Shalaby,et al.  Complexities, error probabilities, and capacities of optical OOK-CDMA communication systems , 2002, IEEE Trans. Commun..

[9]  Anh T. Pham,et al.  Performance analysis of optical atmospheric Turbo-coded 2-D CDMA systems with PPM signaling , 2010, 8th Asia-Pacific Symposium on Information and Telecommunication Technologies.

[10]  R. Morelos-Zaragoza.  The art of error correcting coding , 2002 .

[11]  G. Agrawal.  Fiber‐Optic Communication Systems , 2021 .

[12]  Chunming Qiao,et al.  Optical wireless communication networks for first- and last-mile broadband access[Invited] , 2005 .

[13]  Wing C. Kwong,et al.  Prime Codes with Applications to CDMA Optical and Wireless Networks , 2002 .

[14]  Jing Li,et al.  Optical wireless communications: system model, capacity and coding , 2003, 2003 IEEE 58th Vehicular Technology Conference. VTC 2003-Fall (IEEE Cat. No.03CH37484).

[15]  Tomoaki Ohtsuki,et al.  Performance analysis of atmospheric optical PPM CDMA systems , 2003 .

[16]  Ivan B. Djordjevic,et al.  Shannon capacities and error-correction codes for optical atmospheric turbulent channels , 2005 .

[17]  L. Andrews,et al.  Mathematical model for the irradiance probability density function of a laser beam propagating through turbulent media , 2001 .