TY - GEN
T1 - Considerations on the bit error probability of optical CDMA systems
AU - Galli, Stefano
AU - Menendez, Ronald
AU - Fischer, Russel
AU - Runser, Robert J.
AU - Baby, Varghese
AU - Bres, Camille
AU - Glesk, Ivan
AU - Prucnal, Paul R.
PY - 2004
Y1 - 2004
N2 - The most common metric for evaluating the performance of an optical communications system is the symbol error probability (SEP) versus the received optical power. In circuit-like optical systems employing binary transmission such as WDM, this SEP takes the form of the Bit Error Rate (BER) which is, in general, relatively constant. However, when considering an asynchronous multiple access Optical CDMA (OCDMA) system, the BER is not constant. Since users may enter/exit the network without coordination, the instantaneous SEP of every user can be affected by the transmissions of other users because of the non-zero cross-correlation of optical spreading codes. Therefore, the SEP of an asynchronous OCDMA system becomes time-varying and statistical in nature. In this paper, we determine how to assess the performance of such a system in terms of Average SEP (ASEP) and outage probability. When the analytical description of a problem is not available and the performance can be assessed only via simulations, we also give guidelines on how to calculate the required number of trials necessary to estimate the ASEP with a certain confidence interval.
AB - The most common metric for evaluating the performance of an optical communications system is the symbol error probability (SEP) versus the received optical power. In circuit-like optical systems employing binary transmission such as WDM, this SEP takes the form of the Bit Error Rate (BER) which is, in general, relatively constant. However, when considering an asynchronous multiple access Optical CDMA (OCDMA) system, the BER is not constant. Since users may enter/exit the network without coordination, the instantaneous SEP of every user can be affected by the transmissions of other users because of the non-zero cross-correlation of optical spreading codes. Therefore, the SEP of an asynchronous OCDMA system becomes time-varying and statistical in nature. In this paper, we determine how to assess the performance of such a system in terms of Average SEP (ASEP) and outage probability. When the analytical description of a problem is not available and the performance can be assessed only via simulations, we also give guidelines on how to calculate the required number of trials necessary to estimate the ASEP with a certain confidence interval.
KW - Bit Error Probability
KW - Optical CDMA
KW - Performance Evaluation Confidence Interval
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M3 - Conference contribution
AN - SCOPUS:11144320481
SN - 0889864470
SN - 9780889864474
T3 - Proceedings of the Third IASTED International Conference on Communications, Internet, and Information Technology
SP - 519
EP - 524
BT - Proceedings of the Third IASTED International Conference on Communications, Internet, and Information Technology
A2 - Hamza, M.H.
T2 - Proceedings of the Third IASTED International Conference on Communications, Internet, and Information Technology
Y2 - 22 November 2004 through 24 November 2004
ER -