Dispersion Effects on OCDMA System Performance
Independent thesis Advanced level (degree of Master (Two Years))Student thesis
This thesis presents the effect of dispersion and Multi Access Interference (MAI) of optical fiber on the Bit Error Rate (BER) performance of a Direct Sequence Optical Code Division Multiple Access (DS-OCDMA) network by means of intensity modulation and optical receiver correlators. By using Matlab simulations, Signal-to-Noise Ratio (SNR) versus Received Optical Power (ROP) of an OCDMA transmission system can be evaluated with a so-called 7-chip m-sequence for different numbers of system users. This can be done for the ROP versus BER for various lengths of single mode optical fiber by taking into consideration the dispersion effect in the optical fiber. Matlab simulations can be performed in order to illustrate the reduction of the dispersion index gamma, or to visualize different scenarios, e.g., what amount of transmitted power is required in order to obtain a BER of 10-9 when the length of the optical fiber is increased.
Place, publisher, year, edition, pages
2009. , 57 p.
OCDMA, MAI, SIK, ROP, WDM, PRNG
Computer Science Telecommunications Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:bth-5479Local ID: oai:bth.se:arkivex30AD855F8CBC8679C125763A0078360FOAI: oai:DiVA.org:bth-5479DiVA: diva2:832861
Constantinescu, Dr. Doru