Method and system for multiple channel wireless transmitter and receiver phase and amplitude calibration

A method of estimating common amplitude and phase errors of a multiple channel wireless system, the multiple channel wireless system comprising a plurality of transmission channels formed between at least one transmission antenna and at least one receiver antenna, the method comprising:

• estimating transmission channel elements between each transmission antenna and receiver antenna pair of the multiple channel wireless system for a plurality of carriers of a multiple carrier transmission signal;
• transmitting calibration symbols from each transmit antenna for the plurality of carriers of the multiple carrier transmission signal;
• receiving signals corresponding to the calibration symbols having traveled through the transmission channels;
• estimating received calibration symbols based upon spatial processing of the received signals and the estimated transmission channel elements;
• and
• estimating common amplitude and phase errors for each transmit and receive antenna pair by comparing the transmitted calibration symbols with the received calibration symbols.

A method of estimating common amplitude and phase errors of a multiple channel wireless system, the multiple channel wireless system comprising a plurality of transmission channels formed between at least one transmission antenna and at least one receiver antenna, the method comprising:

• estimating transmission channel elements between each transmission antenna and receiver antenna pair of the multiple channel wireless system for a plurality of transmission time slots;
• transmitting calibration symbols from each transmit antenna for the plurality of transmission time slots;
• receiving signals corresponding to the calibration symbols having traveled through the transmission channels;
• estimating received calibration symbols based upon spatial processing of the received signals and the estimated transmission channel elements;
• and
• estimating common amplitude and phase errors for each transmit and receive antenna pair by comparing the transmitted calibration symbols of the with the received calibration symbols.

A method of estimating common amplitude and phase errors of a multiple channel wireless system, the multiple channel wireless system comprising a plurality of transmission channels formed between at least one transmission antenna and at least one receiver antenna, the method comprising:

• estimating transmission channel elements between each transmission antenna and receiver antenna pair of the multiple channel wireless system for a plurality of carriers of a multiple carrier transmission signal and a plurality of time slots;
• transmitting calibration symbols from each transmit antenna for the plurality of carriers of the multiple carrier transmission signal and plurality of time slots;
• receiving signals corresponding to the calibration symbols having traveled through the transmission channels;
• estimating received calibration symbols based upon spatial processing of the received signals and the estimated transmission channel elements;
• and
• estimating common amplitude and phase errors for each transmit and receive antenna pair by comparing the transmitted calibration symbols of the with the received calibration symbols.

An apparatus for estimating common amplitude and phase errors of a multiple channel wireless system, the multiple channel wireless system comprising a plurality of transmission channels formed between a plurality of transmission antennas and a plurality of receiver antennas, the apparatus comprising:

• means for estimating transmission channel elements between each transmission antenna and receiver antenna pair of the multiple channel wireless system;
• means for transmitting calibration symbols from each transmit antenna;
• means for receiving signals corresponding to the calibration symbols having traveled through the transmission channels;
• means for estimating received calibration symbols based upon spatial processing of the received signals and the estimated transmission channel elements;
• and
• means for estimating common amplitude and phase errors for each transmit and receive antenna pair by comparing the transmitted calibration symbols with the received calibration symbols.

An apparatus for estimating common amplitude and phase errors of a multiple channel wireless system, the multiple channel wireless system comprising a plurality of transmission channels formed between at least one transmission antenna and at least one receiver antenna, the apparatus comprising:

• means for estimating transmission channel elements between each transmission antenna and receiver antenna pair of the multiple channel wireless system for a plurality of carriers of a multiple carrier transmission signal;
• means for transmitting calibration symbols from each transmit antenna for the plurality of carriers of the multiple carrier transmission signal;
• means for receiving signals corresponding to the calibration symbols having traveled through the transmission channels;
• means for estimating received calibration symbols based upon spatial processing of the received signals and the estimated transmission channel elements;
• and
• means for estimating common amplitude and phase errors for each transmit and receive antenna pair by comparing the transmitted calibration symbols with the received calibration symbols.

An apparatus for estimating common amplitude and phase errors of a multiple channel wireless system, the multiple channel wireless system comprising a plurality of transmission channels formed between at least one transmission antenna and at least one receiver antenna, the apparatus comprising:

• means for estimating transmission channel elements between each transmission antenna and receiver antenna pair of the multiple channel wireless system for a plurality of transmission time slots;
• means for transmitting calibration symbols from each transmit antenna for the plurality of transmission time slots;
• means for receiving signals corresponding to the calibration symbols having traveled through the transmission channels;
• means for estimating received calibration symbols based upon spatial processing of the received signals and the estimated transmission channel elements;
• and
• means for estimating common amplitude and phase errors for each transmit and receive antenna pair by comparing the transmitted calibration symbols of the with the received calibration symbols.

An apparatus for estimating common amplitude and phase errors of a multiple channel wireless system, the multiple channel wireless system comprising a plurality of transmission channels formed between at least one transmission antenna and at least one receiver antenna, the apparatus comprising:

• means for estimating transmission channel elements between each transmission antenna and receiver antenna pair of the multiple channel wireless system for a plurality of carriers of a multiple carrier transmission signal and a plurality of time slots;
• means for transmitting calibration symbols from each transmit antenna for the plurality of carriers of the multiple carrier transmission signal and plurality of time slots;
• means for receiving signals corresponding to the calibration symbols having traveled through the transmission channels;
• means for estimating received calibration symbols based upon spatial processing of the received signals and the estimated transmission channel elements;
• and
• means for estimating common amplitude and phase errors for each transmit and receive antenna pair by comparing the transmitted calibration symbols of the with the received calibration symbols.