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 work we study a two-user multiple antenna system under quasi-static fading employing a novel scheme that combines cooperation and iterative multiuser detection based on minimum mean square error estimation. We investigate three different receivers: a joint detector for the two users, a separate (per-user) detector, and a distributed matrix-Alamouti detector. We show that the separate detector...
This paper investigates multiuser detection technology for time hopping (TH) ultra-wideband (UWB) systems to cancel the multiple access interference (MAI) from desired signal. To reduce MAI, three interference cancellation schemes are employed: successive interference cancellation (SIC), successive interference cancellation with the maximum ratio (SIC-MR) and iterative interference cancellation with...
In this paper, we propose a near-optimal, reduced-complexity turbo multiuser receiver for space-time block-coded multi-carrier code division multiple access (MC-CDMA) uplink systems over frequency selective fading environments based on particle swarm optimization (PSO) algorithm. The soft-input soft-output (SISO) multiuser detector based on a posteriori probability (APP) algorithm can achieve optimal...
In this paper, we present multiuser detection (MUD) technique based on a hybrid immune clonal selection algorithm (ICSA) with Hopfield neural network (HNN), for multi-carrier code division multiple access (MC-CDMA) communications systems. The ICSA is an effective approach for the issue of multiuser detection, however, it needs relative high iterated time to convergence. The performances of the ICSA...
This paper investigates detection mechanisms for time hopping pulse position modulated (TH-PPM) multiple access systems in both additive white Gaussian noise and fading environments. In such systems, the raw data is not linearly related to the received signal. One technique is to express the pulse position modulated signal as the sum of linearly modulated signals with the input being a nonlinear function...
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.