Method in a wireless repeater employing an antenna array including vertical and horizontal feeds for interference reduction

摘要

An echo cancellation wireless repeater with first and second antenna arrays having vertical and horizontal feed antenna elements selects a combination of antenna elements for reception and transmission to reduce interference and improve the quality of signal reception. In one embodiment, the antenna elements are switchably connected to transceiver circuits and a combination of antenna elements is selected based on the best desired performance result. In another embodiment, the antenna elements are each connected to its own transceiver circuit and the echo cancellation repeater performs beamforming in baseband to select a combination of antenna elements.

主权项

1. A method to reduce interference in an echo cancellation repeater for a wireless communication network, the repeater employing a first antenna array and a second antenna array, each antenna array including a first set of antenna elements for vertical feed mode and a second set of antenna elements for horizontal feed mode, the method comprising:
(a) selecting a combination of antenna elements from the first and second antenna arrays; (b) receiving incoming receive signals on receiver circuits associated with the selected antenna elements; (c) generating correlation energy measurements indicative of correlation of the receive signals and one or more reference signals; (d) selecting a desired receive signal being a receive signal with a largest correlated energy level, excluding receive signals that are feedback signals of the repeater; (e) calculating antenna weights for the selected antenna elements using one of an error minimizing algorithm or an adaptive metric optimization algorithm; (f) determining a performance result associated with the selected combination of antenna elements; (g) storing calculated antenna weights and the performance result associated with the selected combination of antenna elements; (h) repeating steps (a) to (g) for one or more combinations of antenna elements from the first and second antenna arrays; and (i) selecting a combination of antenna elements from the first and second antenna arrays based on the stored performance results.