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.
Uplink MU-MIMO techniques achieve the high frequency efficiency. However, it is known that the frequency efficiency depends on the arrangement of antennas of the access point. Moreover, we have proposed the distributed antenna system (DAS) which selects the high density arranged antennas according to user distribution and shown its effectiveness using narrow band signals in an actual indoor environment...
Multi-user MIMO (MU-MIMO) realizes a high channel capacity with a little limited number of antennas at user terminals. On the other hand, MU-MIMO needs a channel state information to obtain the transmit weight of beam forming. The distributed antenna system (DAS), which switches the high density arranged antennas according to user distribution in indoor environment, has been proposed. In this paper,...
This paper proposes a downlink MU-MIMO-OFDM transmission using simple receive antenna selection. In the proposal, base station transmits to users with selected receive antenna per subcarrier to obtain diversity gain. The proposal also decreases computational complexity by narrowing down the number of antenna combination in accordance with correlation value between receive antennas at each user. From...
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.