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Large MIMO Systems by B. Sundar Rajan, A. Chockalingam

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3  MIMO encoding

The job of MIMO encoding is to map the input symbols, say, from a modulation alphabet, to symbols to be transmitted over multiple transmit antennas. Spatial multiplexing and space-time coding are two well-known MIMO encoding techniques [1],[2]. Spatial modulation (SM) is a more recently proposed scheme for multiantenna communications [3]. These MIMO encoding schemes do not require any knowledge of the CSI at the transmitter, and hence are essentially “open-loop” schemes. MIMO encoding using CSI at the transmitter is referred to as MIMO precoding, which is treated in Chapter 10. Spatial multiplexing is an attractive architecture for achieving high rates. Space-time coding is attractive for achieving increased reliability through ...

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