A modification of the well known linear and iterative based precoder intended for both single and multi-user multiple-input multiple-output (MIMO) has been proposed. The proposed precoder uses the nonlinear and non-iterative processing strategies to obtain more efficient and less complexity designs. The non-linearity in the precoder is introduced by using the nonlinear constellation precoding technique based on maximum distance separable codes. Also, the computation complexity in iterative based precoder design is avoided by using a singular value decomposition method. The maximum likelihood detection for the linear MIMO channel is considered. The simulation results are provided in-terms of bit error rate versus signal-to-noise ratio to show that the proposed combined non-linear and non-iterative precoding schemes outperform the conventional linear and iterative based MIMO precoder designs.
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Muthalagu, R. A Novel Nonlinear and Non-iterative Precoding Technique for Single and Multi User MIMO Systems. Wireless Pers Commun 106, 2359–2373 (2019). https://doi.org/10.1007/s11277-019-06321-1
- Orthogonal frequency-division multiplexing (OFDM)
- Nonlinear constellation precoding (NCP)
- Maximum distance separable (MDS) codes
- Subcarrier grouping
- Diversity channel selection (DCS)