FIELD: communications.
SUBSTANCE: invention pertains to communication technology and can be used in wireless communication lines with many antennae. For receivers of systems with many inputs and a single output (MISO) a pilot signal transmitted in one direction is preferred, and for receivers of systems with many inputs and many outputs (MIMO), usually the pilot signal should be transmitted in different directions. In one system of transmitting a pilot signal the first set of T scaled pilot symbols is generated using the first instruction vector and transmitted, for example, continuously from T transmitting antennae, where T>1. If the MIMO receivers are supported by a communication system, then at least T-1 additional sets of T scaled pilot symbols are generated, at least, using T-1 additional instruction vectors and transmitted from T transmitting antennae. The instruction vectors are designed for different, for instance, orthogonal directions. Each MISO receiver can evaluate its MISO-channel, based on the first set of scaled pilot symbols. Each MIMO receiver can evaluate its MIMO-channel, based on the first and additional sets of scaled pilot symbols.
EFFECT: increased efficiency of transmitting pilot signals in a system with many antennae.
52 cl, 11 dwg
