Information and Signal Processing

Improving ber performance for coherent detection of nonorthogonal multifrequency signals

S. B. Makarov, S. V. Zavyalov

St. Petersburg State Polytechnical University

Abstract: Research of the BER performance of multifrequency PSK-4 signals with nonorthogonal location of subcarriers has been conducted. Elementwise coherent detection algorithm with compensation for interchannel interference (and multistep modification) and algorithm according to the state diagram are proposed.

Keywords: non-orthogonal multi-frequency systems, coherent detection algorithm, compensation for inter-channel interference, state diagram, ber performance.

UDC: 621.391.8