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Massive MIMO technology is needed as the volume of data demand increases. An increase in the number of RF-chains as the number of antennas increases causes hardware complexity and system cost increase. This causes the application of the actual communication system to be delayed. In this paper, we show the applicability to massive mimo by expanding the unit load modulation module with single RF-chain...
In this paper, we present the beamforming technologies used for increasing the system capacity at unlicensed band. We investigate the international research trend and the key technology of some companies, such as Wavion, GoNet, and Ruckus Inc. We also introduce the Binary CDMA technologies good at PAPR characteristics. Finally, we analysis the performance of receive beamforming using Compact MIMO...
We explore the performance and hardware complexity tradeoffs associated with performing iterative multiple- input multiple-output (MIMO) detection using a sphere decoder and a low-density parity-check (LDPC) decoder. Iterations are performed both within the LDPC decoder as well as via an outer iteration loop through which refined soft information is fed back from the LDPC decoder to a MIMO detector...
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