Behavior of a Multi-User MIMO System in Time-Varying Environments
نویسندگان
چکیده
منابع مشابه
Behavior of a Multi-User MIMO System in Time-Varying Environments
We evaluated the behavior of a multi-user multiple-input multiple-output (MIMO) system in time-varying channels using measured data. A base station for downlink or broadcast transmission requires downlink channel state information (CSI), which is outdated in time-varying environments and we encounter degraded performance due to interference. One of the countermeasures against time-variant envir...
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Although multi-user multiple-input multiple-output (MIMO) systems provide high data rate transmission, they may suffer from interference. Block diagonalization and eigenbeam-space division multiplexing (E-SDM) can suppress interference. The transmitter needs to determine beamforming weights from channel state information (CSI) to use these techniques. However, MIMO channels change in time-varyi...
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In this paper, the performance of a multi-user multiple-input multiple-output (MIMO) system in time-varying channels is evaluated using measurement data. We consider the multi-user MIMO system using a block diagonalization (BD) scheme and an eigenbeam-space division multiplexing (E-SDM) technique. In an ideal case, the BD scheme eliminates inter-user interference, and the E-SDM technique suppre...
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Wireless broadband communications for mobile users at vehicular speed is the cornerstone of future 4th generation systems. This chapter deals with joint iterative channel estimation and multi-user detection for the uplink of a multi-carrier (MC) code division multiple access (CDMA) system. MC-CDMA is based on orthogonal frequency division multiplexing (OFDM) and employs spreading sequences in t...
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ژورنال
عنوان ژورنال: IEICE Transactions on Communications
سال: 2013
ISSN: 0916-8516,1745-1345
DOI: 10.1587/transcom.e96.b.2364