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A method and system for constant-power loading for asymmetric antenna configurations. The sounding packet, the sounding bit in HT-SIG field, and the HT-LTF field in the PLCP protocol data unit (PPDU) are used to determine the number of transmit antennas and the number of data streams, wherein if the

A method and system for constant-power loading for asymmetric antenna configurations. The sounding packet, the sounding bit in HT-SIG field, and the HT-LTF field in the PLCP protocol data unit (PPDU) are used to determine the number of transmit antennas and the number of data streams, wherein if the number of transmission streams is the same as the number of data streams, then a first set of power loading level (fixed uneven power loading) is applied, otherwise a second set of power loading level is applied. Alternatively, one additional bit in the HT-SIG filed of PLCP protocol data unit (PPDU) signaling field is used to signal the set of power loading level used.

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What is claimed is: 1. A telecommunication system, comprising: a wireless transmitter that transmits data streams via multiple channels over a plurality of antennas to a receiver, the transmitter including a power controller that selects a set of constant power loading levels for asymmetric antenna

What is claimed is: 1. A telecommunication system, comprising: a wireless transmitter that transmits data streams via multiple channels over a plurality of antennas to a receiver, the transmitter including a power controller that selects a set of constant power loading levels for asymmetric antenna configuration based on antenna information, wherein the antenna information is obtained based on a beamforming protocol including sounding before the start of a beamforming transmission, and the number of transmit antennas is obtained based on a sounding packet. 2. The system of claim 1 wherein the transmitter comprises is a MIMO transmitter. 3. The system of claim 1 wherein the transmitter informs the receiver of the power loading level such that the receiver decodes a transmitted packet. 4. The system of claim 1 wherein the receiver obtains the number of transmit antennas based on a sounding packet transmitted by the transmitter. 5. The system of claim 4 wherein the number of data streams is obtained based on current packet transmission. 6. The system of claim 5 wherein if the number of transmit antennas is the same as the number of data streams, then the power loading controller utilizes a first set of power loading level, otherwise, the power loading controller utilizes a second set of power loading level. 7. The system of claim 6 wherein the transmitter informs the receiver of the power loading level such that the receiver decodes a transmitted packet, wherein the power level information is obtained using an extra bit in the signaling field. 8. The system of claim 6 wherein if the extra bit is 0, then a first set of power loading level is used, and if extra bit is 1 then a second set of power loading level is used. 9. The system of claim 5 wherein if the number of transmit antennas (Ntx) is same as the number of data streams (Nss), then the power loading controller utilizes fixed uneven power loading; otherwise if the number of transmit antennas is greater than the number of data streams then the eigen-modes with the Nss largest eigenvalues are selected as power loading determination. 10. A closed-loop signaling method over multiple channels in a telecommunication system including a transmitter and a receiver, comprising: obtaining an information bit stream; obtaining antenna information based on a beamforming protocol including sounding before the start of a beamforming transmission; selecting the number transmission streams; determining transmission power loading per channel as for asymmetric antenna configuration; and transmitting the information bit stream from the transmitter via said multiple channels over a plurality of transmit antennas to the receiver according to the power loading levels, wherein the number of transmit antennas is obtained based on a sounding packet. 11. The method of claim 10 wherein the telecommunication system comprises is a MIMO system. 12. The method of claim 10 further including informing the receiver of the power loading level such that the receiver decodes a transmitted packet. 13. The method of claim 10 further including the receiver obtaining the number of transmit antennas based on a sounding packet transmitted by the transmitter. 14. The method of claim 13 further including obtaining the number of data streams based on current packet transmission. 15. The method of claim 14 further including determining if the number of transmit antennas is the same as the number of data streams, and if so, then utilizing a first set of power loading level, otherwise, utilizing a second set of power loading level. 16. The method of claim 15 further including the transmitter informing the receiver of the set of power loading level used such that the receiver decodes a transmitted packet, wherein the power level information is obtained using an extra bit in the signaling field. 17. The method of claim 15 wherein if the extra bit is 0, then a first set of power loading level is used, and if extra bit is 1 then a second set of power loading level is used. 18. The method of claim 14 wherein if the number of transmit antennas (Nix) is same as the number of data streams (Nss), then fixed uneven power loading is utilized, otherwise if the number of transmit antennas is greater than the number of data streams then the eigen-modes with the Nss largest eigenvalues are selected as power loading determination. 19. An apparatus, comprising: a wireless transmitter that transmits data streams via multiple channels over a plurality of antennas, the transmitter including a power controller that selects a set of constant power loading levels for asymmetric antenna configuration based on information of the plurality of antennas, wherein the information of the plurality of antennas is obtained based on a beamforming protocol, and the number of transmit antennas is obtained based on a sounding packet. 20. A closed-loop signaling method over multiple channels in a telecommunication system including a wireless transmitter, comprising: obtaining antenna information based on a beamforming protocol from a bitstream; determining transmission power loading per channel for asymmetric antenna configuration; and transmitting the information bit stream from the transmitter via said multiple channels over a plurality of transmit antennas according to the power loading levels, wherein the number of transmit antennas is obtained based on a sounding packet.