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, we present low-complexity compressed sensing (CS) techniques for monitoring electrocardiogram (ECG) signals in wireless body sensor network (WBSN). We first exploit ECG properties in the wavelet domain to extend the partially known support set (PKS) so as to reduce the support augmentation and estimation efforts in the iterative recovery algorithm. Then, variable orthogonal multi-matching...
An interference alignment (IA) algorithm for uplink coordinated multi-point (CoMP) is proposed. For the design of precoder at the transmitter, the unselfish per-user signal-to-leakage-and-noise ratio (SLNR) criterion is used. On the other hand, the per-user signal-to-interference-and-noise-ratio (SINR) criterion is adopted to determine the decoder of the receiver. The proposed algorithm does not rely...
In recent years, the research on multiple-input multiple-output (MIMO) wireless communications has attracted much interest. This study investigates precoding techniques for multi-user MIMO communications. By applying QR decomposition to augmented channel matrix based on minimum mean squared error (MMSE) approach plus Tomlinson-Harashima precoding (THP) and equal-rate power allocation, we show that...
In this paper, we propose a reduced-complexity multi-user MIMO precoding scheme based on sorted-QR decomposition suitable for green applications. In addition, a new power allocation strategy is proposed that approaches optimized BER with low arithmetic complexity. The proposed block-based power allocation strategy allocates adequate power to the deeply-faded spatial pipe, which improves bit-error-rate...
In this paper, we propose an ordered selection technique to improve the performance of the decision-directed RLS adaptive channel tracking algorithm in 2 ?? 2 spatial-multiplexing MIMO-OFDM systems under high mobility. The proposed technique uses the decision of high reliability order during MIMO signal detection and then selectively activates the RLS adaptation only when less interference and error...
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.