The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
In this paper, 2-D T/W OCDMA system using LDPC code is investigated. In our proposed system, we utilize carrier-hopping prime code as signature sequence. The carrier-hopping prime code is a symmetric code whose out-of-phase autocorrelation is zero and the cross-correlation is at most one. Since the multiple access interference and beat noise impose significant impact on optical CDMA system, we apply...
In this paper, the employment of two-dimensional run-length limited code is investigated for time-spreading wavelength-hopping optical CDMA systems. In the proposed architecture, the carrier-hopping prime code is utilized as signature sequences, and it is a symmetric code whose out of phase autocorrelation is zero and the cross-correlation is at most one. Based on the zero autocorrelation sidelobes...
In this paper, two-dimensional optical CDMA system using trellis ternary coding scheme is investigated. We employ the carrier hopping prime code as signature sequences in time-spreading wavelength-hopping optical CDMA system. As the carrier hopping prime code is a symmetric code, the autocorrelation sidelobes is zero. We apply the orthogonality of this signature sequences to achieve the ternary transmission...
In this paper, we employ the two-dimensional spatial coding scheme to improve system performance in time-spreading wavelength-hopping optical CDMA system. The signature sequence in our proposed system utilizes symmetric code (i.e. single-pulse-per-row) and its shifted version. Based on the zero autocorrelation sidelobes property, we propose a two-dimensional parallel detection scheme using trellis...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.