Method for a canceling self interference signal using active noise cancellation in the air for full duplex simultaneous (in time) and overlapping (in space) wireless transmission and reception on the same frequency band

摘要

A method for full duplex communication includes creating a canceling self interference signal using active noise cancelation in the air by using a plurality of transmit antennas and feeding the plurality of antennas with an RF signal in so that part of said RF signal is destructively combined at a receive antenna, and attaining full-duplex simultaneous in time and overlapping in space wireless transmission and reception on same frequency band responsive to the step of creating a canceling self interference signal.

主权项

1. A method for full duplex wireless communication comprising the steps of:
creating a canceling self interference signal using active noise cancelation in radio frequency (RF) transmission by using a plurality of transmit antennas and feeding the plurality of transmit antennas with an RF signal for enabling part of said RF signal to be destructively combined at a receive antenna; attaining full-duplex simultaneous in time and overlapping in space wireless transmission and reception on same frequency band responsive to the step of creating the canceling self interference signal; wherein the plurality of transmit antennas are grouped into two sets: a first group of driving transmit antennas from which the RF signal comprising a signal of interest is transmitted and a wireless tandem group of associated tandem transmit antennas that generates and transmits the canceling self interference signal at the receive antenna based on the signal of interest and a channel between the transmit and receive antennas; and wherein a distance between a transmit antenna of the first group and an associated tandem transmit antenna of the wireless tandem group is an integer multiple of λ plus λ/2, λ being a wavelength of a carrier frequency.