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Physical-Layer AlgorithmsThe Institute pursues research on physical layer algorithms in modern mobile radiocommunication systems. They are connected with multitone modulation using orthogonal (OFDM) and non-orthogonal subcarriers (FBMC) and non-contiguous, fragmented spectrum bands. Research work is directed towards the minimization of the out-of-band emission, reduction of non-linear distortions, reliable reception of signals and synchronization algorithms. Another field of studies encompasses channel coding using various types of error correction codes, namely, convolutional codes, turbo codes, selected types of LDPC codes and polar codes with several decoding algorithms. Moreover, bit-interleaved coded modulation with iterative decoding is investigated. Applications and improvements of transmission and reception diversity techniques are also being explored, in particular Multiple-Input, Multiple-Output (MIMO) and massive MIMO (M-MIMO) technologies, and beamforming algorithms in antenna matrices.