Low-Complexity Detection of Permutational Index Modulation for Noncoherent Communications
By: Marc Vilà-Insa , Aniol Martí , Meritxell Lamarca and more
Potential Business Impact:
Makes wireless signals stronger and clearer.
This work presents a massive SIMO scheme for wireless communications with one-shot noncoherent detection. It is based on permutational index modulation over OFDM. Its core principle is to convey information on the ordering in which a fixed collection of values is mapped onto a set of OFDM subcarriers. A spherical code is obtained which provides improved robustness against channel impairments. A simple detector based on the sorting of quadratic metrics of data is proposed. By exploiting statistical channel state information and hardening, it reaches near-ML error performance with a low-complexity implementation.
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