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.
Single Carrier Decomposed-Quadrature Optical (SC-DQO) modulation has been suggested in the past, as a possible method for use in Optical Wireless (OW) Intensity Modulation with Direct Detection (IM-DD) communication systems. This method has lower peak-to-average power ratio (PAPR) when compared to Asymmetrically-Clipped Optical OFDM (ACO-OFDM). It was shown that its receiver utilizes only 50% of the...
Recently, an improved receiving technique for Optical Wireless (OW) with Intensity Modulation and Direct Detection (IM-DD) communication systems, implementing Asymmetrically-Clipped Optical OFDM (ACO-OFDM) modulation, has been proposed. It uses the previously discarded (so called in the literature) “clipping noise” to generate an improved estimator for the transmitted signal, up to 3dB in the receiver...
In this work, an improved receiving technique for Optical Wireless Intensity Modulation and Direct Detection (OW IM-DD) communication system, with Asymmetrically-Clipped Optical OFDM (ACO-OFDM) modulations, is proposed. The (socalled in the literature) “clipping noise”, which carries 50% of the transmitted signal power is customarily discarded. Instead we show that the clipping noise carries information...
Imperfect channel estimation results in the introduction of symbols coupling for system with space time codes encoding when decoded by the mismatched filter. The bootstrap algorithm was suggested to be used as a signal separator at the output of the mismatched filter. In this work, this solution is studied in details for the Alamouti's code. An inherent problem of the bootstrap's weights control process...
Among the specification of the 5G networks two crucial aspects are the support of fast mobility and high data rates. With fast mobility, the fading channels phenomenon become crucial, resulting in the need for multiple input/output channel to create spatial diversity. Space time codes (STC) have been shown to be well used with the Multiple Input Multiple Output channel. The Orthogonal STC (OSTC) family...
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.