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- W2341675250 abstract "An analysis of broadcasting in massive MIMO (multiple-input and multiple-output) systems with a limited coherence interval is presented. When broadcasting common information, such as control signals, the base station does not have channel state information to the terminals. We propose that the base station broadcasts this common information using a low dimensional orthogonal space-time block code (OSTBC). This code is mapped onto the large antenna array with the use of a dimension reducing matrix, effectively “shrinking” the channel. The terminal can estimate the effective channel and decode the information, even when the coherence interval is short compared to the number of base station antennas. Different OSTBCs are compared in terms of outage capacity in practical scenarios using estimated CSI. In particular, the trade-off between diversity and rate, when little or no time/frequency diversity is available, is investigated." @default.
- W2341675250 created "2016-06-24" @default.
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- W2341675250 date "2015-08-01" @default.
- W2341675250 modified "2023-09-23" @default.
- W2341675250 title "Broadcasting in massive MIMO using OSTBC with reduced dimension" @default.
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- W2341675250 doi "https://doi.org/10.1109/iswcs.2015.7454369" @default.
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