Coherent/noncoherent detection of coherent optical heterodyne DPSK-CDMA and MFSK-CDMA signals
Jakubek, David Andrew
Robertson, R. Clark
Ha, Tri T.
MetadataShow full item record
The system performance of a coherent optical heterodyne communication system is analyzed for MFSK-CDMA and DPSK-CDMA signaling. The analysis determines the effect that receiver thermal noise, photodetector shot noise, laser phase noise, and multiple user noise has on the system performance. For the single user performance, the probability of bit error of the system is calculated as a function of E(b)/N(0) for laser linewidth-to-bit ratios from 0.1 to 0.01. For both MFSK and DPSK, the system performance is most affected by laser phase noise at higher linewidth-to-bit rate ratios. The multiple user analysis for MFSK-CDMA and DPSK-CDMA is determined by calculating the probability of bit error as a function of the number of users for various laser linewidth-to-bit ratios and codelengths. The observations made for the single user case concerning the effects of laser phase noise are also observed for the multiple user case. when the effects of the laser plane noise no longer dominate system performance, then MFSK-CDM and DPSK-CDMA can be used to increase the user capacity of optical fiber systems.
Approved for public release; distribution is unlimited
Showing items related by title, author, creator and subject.
Performance analysis of modified M-ARY PSK and QAM signaling schemes in the presence of noise and jamming Gunes, Fikret (1986-06);The purpose of this thesis is to evaluate and compare the performance of certain M-ary digital modulation schemes such as MPSK, QAM and certain modifications to these which have not been considered in previous analyses. ...
Significant factors in predicting promotion to Major, Lieutenant Colonel, and Colonel in the United States Marine Corps Hoffman, Joel M. (Monterey, California. Naval Postgraduate School, 2008-03);Multiple factors influence a Marine officer's probability of promotion. Currently, MMOA-4 counselors are not able to provide career advice based on statistical analysis of the multitude of variables that could be significant ...
Clark, Darwin L. (Monterey, California. Naval Postgraduate School, 1992-03);The continuing development of the free electron laser (FEL) as a powerful and versatile source of coherent radiation steadily drives toward the goal of high efficiency and broad tenability at shorter wavelengths. New ...