NDLI: Performance of optical direct-detection CDMA systems using prime sequence codes

Content Provider	IEEE Xplore Digital Library
Author	Sato, K. Ohtsuki, T. Uehara, H. Sasase, I.
Copyright Year	1995
Description	Author affiliation: Dept. of Electr. Eng., Keio Univ., Yokohama, Japan (Sato, K.; Ohtsuki, T.; Uehara, H.; Sasase, I.)
Abstract	The performance of optical synchronous code-division multiple-access (CDMA) with on-off keying (OOK) signaling (OOK/CDMA) and CDMA with M-ary pulse position modulation (PPM) signaling (PPM/CDMA) systems using prime sequence codes as signature codes is analyzed under the assumption of Poisson shot noise model for the photodetector. The bit error probability of OOK/CDMA is evaluated, and the upper bound on the bit error probability of PPM/CDMA is derived. Further, the performance is compared for some values of the average signal count per second, the length of prime sequences, and the number of simultaneous users under the constraint on throughput. It is found that PPM/CDMA performs better than OOK/CDMA by the pulse position multiplicity. It is also found that as the number of slots per frame of PPM increases, the bit error probability performance is improved. Moreover, it is found that CDMA with longer prime sequence codes has better performance. Therefore, we show that in order to achieve the low bit error probability and many simultaneous users, we should employ PPM/CDMA with larger number of slots and longer prime sequence codes.
Starting Page	1312
Ending Page	1316
File Size	497292
Page Count	5
File Format	PDF
ISBN	0780324862
DOI	10.1109/ICC.1995.524416
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1995-06-18
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Multiaccess communication Error probability Optical noise Optical modulation Pulse modulation Optical pulses Modulation coding Signal analysis Performance analysis Photodetectors
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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