Abstract
This paper proposes a new form of real-valued representation and an improved decoding scheme for Advanced Television System Committee (ATSC) 3.0 multiple-input multiple-output (MIMO). The proposed representation of ATSC 3.0 MIMO is easy to use various suboptimal decoding schemes. In addition, a successive interference cancellation (SIC) and an improved decoding scheme based on block cancellation using the new form of the real-valued representation and QR decomposition are proposed. The SIC scheme can significantly reduce the computational complexity by using a hard decision compared to a maximum-likelihood decision rule. The proposed improved decoding scheme considers N candidate symbols instead of the hard decision for the SIC scheme. Therefore, the improved performance can be obtained with slightly increased computational complexity. Simulation results show that the proposed decoding scheme outperforms a zero-forcing and SIC schemes based on the real valued representation under fixed and mobile channels.
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