System and method for pilot sequence design in a communications system

摘要

A method for pilot sequence design in a communications system includes selecting an initial cell in the communications system, and grouping other cells in the communications system relative to the initial cell into one of a neighbor group and a non-neighbor group in accordance with a neighborness measure of each of the other cells to the initial cell. The method also includes designing pilot sequences that are substantially orthogonal to one another for the initial cell and the other cells in the neighbor group, and providing information about the pilot sequences to the initial cell and the other cells in the communications system.

主权项

1. A method for pilot sequence design in a communications system, the method comprising:
selecting, by a designing device, an initial cell in the communications system; grouping, by the designing device, other cells in the communications system relative to the initial cell into one of a neighbor group and a non-neighbor group in accordance with a neighborness measure of each of the other cells to the initial cell; designing, by the designing device, pilot sequences that are substantially orthogonal to one another for the initial cell and cells in the neighbor group; providing, by the designing device, information about the pilot sequences to the initial cell and the other cells in the communications system; selecting a first cell in the neighbor group as a new cell, the new cell having a plurality of neighbor cells, wherein a subset of the plurality of neighbor cells are members of the neighbor group and have been assigned pilot sequences; adding a remainder of the plurality of neighbor cells to the neighbor group; and designing additional pilot sequences for cells in the plurality of neighbor cells that do not have assigned pilot sequences, the additional pilot sequences are substantially orthogonal to one another for the first cell and the plurality of neighbor cells.