System and method for transmit and receive antenna patterns calibration for time division duplex (TDD) systems
First Claim
1. A system comprising:
- a plurality of antennas having tunable phases and configured for both transmitting and receiving;
a plurality of radio circuits configured to transmit and receive via said antennas in a time division duplex (TDD) communication protocol; and
a computer processor configured to perform the following steps;
cause the radio circuits to transmit and receive signals via said antennas in said TDD communication protocol using a plurality of weight settings;
collect data rate information pertaining to transmission using said weight settings;
identify a transmit weight setting associated with a transmit null pattern based on a minimum data rate;
identify a receive weight setting associated with a receive null pattern;
calculate a difference between the transmit weight setting associated with the transmit null pattern and the receive weight setting associated with the receive null pattern; and
use said calculated difference to match transmission and reception on said antenna patterns.
3 Assignments
0 Petitions
Accused Products
Abstract
A method and system for applying a calibration procedure to match the peaks and nulls of the transmit and receive antenna patterns of a communication device are provided herein. The system may include: a plurality of antennas having tunable phases and configured for both transmitting and receiving; a plurality of radio circuits configured to transmit and receive via said antennas in a time division duplex (TDD) communication protocol; and a computer processor configured to calculate a weight setting difference between the transmit and the receive antenna pattern, wherein the antenna pattern is a peak-null pattern of the plurality of antennas operating together. The calibration value may enable the calibrated communication device to apply channel reciprocity to the beam-forming and/or nulling applications.
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Citations
27 Claims
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1. A system comprising:
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a plurality of antennas having tunable phases and configured for both transmitting and receiving; a plurality of radio circuits configured to transmit and receive via said antennas in a time division duplex (TDD) communication protocol; and a computer processor configured to perform the following steps; cause the radio circuits to transmit and receive signals via said antennas in said TDD communication protocol using a plurality of weight settings; collect data rate information pertaining to transmission using said weight settings; identify a transmit weight setting associated with a transmit null pattern based on a minimum data rate; identify a receive weight setting associated with a receive null pattern; calculate a difference between the transmit weight setting associated with the transmit null pattern and the receive weight setting associated with the receive null pattern; and use said calculated difference to match transmission and reception on said antenna patterns. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A method comprising:
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transmitting and receiving signals via a plurality of antennas having tunable phases using a time division duplex (TDD) communication protocol using a plurality of weight settings; collecting data rate information pertaining to said weight settings; identifying a transmit weight setting associated with a transmit null pattern based on a minimum data rate; identifying a receive weight setting associated with a receive null pattern; calculating a difference between the transmit weight setting associated with the transmit null pattern and the receive weight setting associated with the receive null pattern; and using said calculated difference to match transmission and reception on said antenna patterns. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27)
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Specification