Title :
Maximum achievable number of users in optical PPM-CDMA local area networks
Author :
Shalaby, Hossam M H
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Inst., Singapore
Abstract :
An optical code-division multiple-access (CDMA) communication network employing optical orthogonal codes is considered. The data symbols of each multiple-access user is encoded, before multiplexing, using pulse-position modulation (PPM) technique with sufficiently large pulse position multiplicity. The concepts of both users rate and users strength are introduced. Using these concepts an achievable number of simultaneous users that can be accommodated by the optical PPM-CDMA channel, while keeping the transmitted information per photon fixed and maintaining the probability of error below some prescribed threshold 0\n\n\t\t
Keywords :
code division multiple access; optical fibre LAN; optical fibre subscriber loops; probability; pulse position modulation; arbitrary small error rate; data symbols; large pulse position multiplicity; multiple-access user encoding; optical PPM-CDMA channel; optical PPM-CDMA local area networks; optical channel; optical code-division multiple-access communication network; optical orthogonal codes; probability; pulse-position modulation; subscribers; Error analysis; Intelligent networks; Multiaccess communication; Optical fiber LAN; Optical fiber networks; Optical modulation; Optical network units; Optical pulses; Optical sensors; Pulse modulation;
Journal_Title :
Lightwave Technology, Journal of
