Pilot signal transmission for an orthogonal frequency division wireless communication system

摘要

Transmission patterns for pilot symbols transmitted from a mobile station or base station are provided. The pattern allows for improved receipt of the pilot symbols transmitted for frequency selective channels and users. In addition, schemes for improving the ability to multiplex pilot symbols without interference and/or biasing from different mobile stations over the same frequencies and in the same time slots.

主权项

1. A wireless communication apparatus, comprising:
at least one antenna; a memory that stores a plurality of patterns of pilot symbols, each of the plurality of patterns comprising four contiguous clusters, each of the four contiguous clusters located at substantially corners of a hop region; and a processor coupled with the at least one antenna and the memory, the processor configured to select at least one pilot pattern of the stored plurality of pilot patterns for transmission by the at least one antenna based upon a time selectivity or frequency selectivity of a channel, wherein the processor is further configured to select the at least one pilot pattern based upon whether the wireless communication apparatus is to receive a transmission in a Multiple Input Multiple Output (MIMO) mode.