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.
For the novel channel estimation method using compressed sensing (CS), many strategies have been proposed for its performance improvements. Nevertheless, random sequences are usually used to construct sensing matrix, but it is difficult and expensive to be implemented in hardware, and may cause large Peak-to-Average Power Ratio (PAPR) in OFDM system. Consequently, in this paper, the method that to...
The transform domain communication system (TDCS) is one spectrum agile transceiver technology in the cognitive radio (CR) contexts. It gives an effective and available way to resolve current spectrum resource scarcity. This paper briefly introduces the basic theory of the TDCS transceiver. The primary goal of this paper is to give a detailed description of the channel estimation (CE) in TDCS receiver...
Multiple-input multiple-output (MIMO) systems can be combined with orthogonal frequency division multiplexing (OFDM) systems to improve the capacity and quality of wireless communications. In this article, a channel estimation technique in both space and frequency domain for MIMO-OFDM systems is proposed. It is shown that the proposed scheme with space-frequency pilot tones achieve optimal minimum...
This paper addresses the problem of channel estimation for broadband MIMO-OFDM systems. An improved channel estimator with multipath time delay detection and channel gain estimation is proposed. In the algorithm, we used the correlation of the channel taps and a well-designed adjustment scheme to increase the accuracy of the time delay detection. The most attractive advantage is that the complicated...
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.