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- W2096979942 abstract "A new frequency and space preceding scheme for multiple input multiple output (MIMO) orthogonal frequency division multiplexing (OFDM) systems is presented. For frequency preceding, the data symbols to be transmitted are divided into multiple substreams, and a predefined unitary matrix is applied to each substream to obtain different linear combinations of data symbols in the substream to gain frequency diversity. For space preceding, different preceding matrices selected from a predefined orthogonal matrix are used to allocate each frequency precoded data symbol to all transmit antennas to gain spatial diversity. The number of substreams and the corresponding data symbol mapping scheme are also adaptively determined at the receiver under varying received signal strength and MIMO channel conditions, and are made available to the transmitter through a low-rate feedback channel. Simulation results show that the proposed MIMO OFDM system with adaptive substream selection can effectively exploit both frequency and spatial diversity, and deliver the maximum system throughput." @default.
- W2096979942 created "2016-06-24" @default.
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- W2096979942 date "2009-04-01" @default.
- W2096979942 modified "2023-10-05" @default.
- W2096979942 title "Frequency and Space Precoded MIMO OFDM with Substream Adaptation" @default.
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- W2096979942 doi "https://doi.org/10.1109/wcnc.2009.4917729" @default.
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