Channel estimates in a wireless communication system

摘要

A wireless MIMO communications network establishes channel estimation by means of a channel estimation sequence utilising band hopping in a conventional manner from a first antenna. This can then be detected by legacy SISO devices. A further channel estimation sequence is concurrently transmitted from one or more further antennas, the further channel estimation sequence using a band hopping sequence complementary with the aforementioned band hopping sequence so as to avoid collision therewith. This latter channel estimation sequence can thus be detected by cooperating MIMO receiving equipment to provide opportunities for channel estimation.