Abstract
By using large point-to-point multiple input multiple output (MIMO), spatial multiplexing of a large number of data streams in wireless communications using millimeter-waves (mm-waves) can be achieved. However, according to the antenna spacing and transmitter-receiver distance, the MIMO channel is likely to be ill-conditioned. In such conditions, highly complex schemes such as the singular value decomposition (SVD) are necessary. In this paper, we propose a new low complexity system called discrete Fourier transform based spatial multiplexing (DFT-SM) with maximum ratio transmission (DFT-SM-MRT). When the DFT-SM scheme alone is used, the data streams are either mapped onto different angles of departures in the case of aligned linear arrays, or mapped onto different orbital angular momentums in the case of aligned circular arrays. Maximum ratio transmission pre-equalizes the channel and compensates for arrays misalignments. Simulation results show that, although the DFT-SM-MRT scheme has a much lower complexity than the SVD scheme, it still achieves large spectral efficiencies and is robust to misalignment and reflection.
Original language | English |
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Title of host publication | IEEE Wireless Communications and Networking Conference (WCNC), 2014 |
Volume | 2014 |
Publisher | IEEE Press |
Publication date | Apr 2014 |
Pages | 913 - 918 |
DOIs | |
Publication status | Published - Apr 2014 |
Event | IEEE Wireless Communications and Networking Conference (WCNC) - Istanbul, Turkey Duration: 6 Apr 2014 → 9 Apr 2014 http://www.ieee.org/conferences_events/conferences/conferencedetails/index.html?Conf_ID=21349 |
Conference
Conference | IEEE Wireless Communications and Networking Conference (WCNC) |
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Country/Territory | Turkey |
City | Istanbul |
Period | 06/04/2014 → 09/04/2014 |
Internet address |
Series | I E E E Wireless Communications and Networking Conference. Proceedings |
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ISSN | 1525-3511 |