Gradient estimation for stochastic optimization of optical code-division multiple-access systems. II. Adaptive detection
نویسندگان
چکیده
منابع مشابه
Gradient Estimation for Stochastic Optimization of Optical Code-Division Multiple-Access Systems: Part II - Adaptive Detection
In this sequel, we develop infinitesimal perturbation analysis (IPA)-based stochastic gradient algorithms for deriving optimum detectors with the average probability of bit error being the objective function that is minimized. Specifically, we develop both a class of linear as well as nonlinear (threshold) detectors. In the linear scheme, the receiver despreads the received optical signal with ...
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The optical code division multiple access (optical CDMA) systems is a versatile multiple access technique as compared to time division multiple access (TDMA) and wavelength division multiple access (WDMA). In optical CDMA, the users are assigned unique codes whereas the WDMA and TDMA systems users are assigned different wavelengths or time slots so as to distinguish the data recovered at the re...
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A new detector for optical code-division multipleaccess (CDMA) communication systems is proposed. This detector is called the chip-level receiver. Both ON–OFF keying (OOK) and pulse-position modulation (PPM) schemes, that utilize this receiver, are investigated in this paper. For OOK, an exact bit error rate is evaluated taking into account the effect of both multiple-user interference and rece...
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With the emergence of network driven applications and high speed requirements in communication along with security and large bandwidth, there is a need for a network technique which is capable of providing all the above with a reduced cost. A multiple access technique called Optical Code Division Multiple Access (OCDMA) seems to be fulfilling the above criteria. OCDMA combines the large bandwid...
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In this paper a Polarized Optical Orthogonal Code (Polarized-OOC) is proposed by exploiting the polarization property of the fiber and the chip’s polarization state. The polarized-OOC code is generated using the concept of Mark Position Difference (MPD) set. Polarized-OOC code cardinality is shown to be two times that of the conventional OOC which reflects an increase in the number of supported...
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ژورنال
عنوان ژورنال: IEEE Journal on Selected Areas in Communications
سال: 1997
ISSN: 0733-8716
DOI: 10.1109/49.585784