Patent ID: 9270350
Filing Date: 2016-02-23
CPC Classification: H04B,H04L

Claim Text:
1. A signal transmitting method for Orthogonal Frequency Division Multiplexing (OFDM) communication system, comprising: dividing M transmitting antennas into one or more groups to form U transmitting ports, wherein transmitting antennas in different groups are uncorrelated, and M is greater than or equal to U; forming P data flows using a Multiple-Input Multiple-Output (MIMO) mode, wherein P=U/2, and P is less than or equal to a number of receiving ports; and mapping a group of 2P modulation symbols, including two modulation symbols of each data flow, to a resource element pair to form Space Frequency Block Code (SFBC) coding relationships with each other, and transmitting the group of 2P modulation symbols on the U transmitting ports, wherein the one or more groups of transmitting antennas formed by dividing the M transmitting antennas constitute diversity antennas, one group or more than one group of antenna arrays; wherein each group of transmitting antennas constitutes an antenna array, and forms one or more transmitting ports based on one or more pre-coding weights or one or more beam weights, where the number of the pre-coding weights or the number of the beam weights is equal to the number of the transmitting ports; wherein U=4, P=2, the M transmitting antennas are divided into four groups, and the four groups of transmitting antennas constitute diversity antennas; and wherein mapping a group of 2P modulation symbols, including two modulation symbols of each data flow, to a resource element pair to form Space Frequency Block Code (SFBC) coding relationships with each other, and transmitting the group of 2P modulation symbols on the U transmitting ports comprise: a first group of transmitting antennas transmitting, in a single antenna mode or a single port mode, a modulation symbol s a second group of transmitting antennas transmitting, in a single antenna mode or a single port mode, a modulation symbol s a third group of transmitting antennas transmitting, in a single antenna mode or a single port mode, a modulation symbol s a fourth group of transmitting antennas transmitting, in a single antenna mode or a single port mode, a modulation symbol s wherein the first resource element and the second resource element are two resource elements of the resource element pair, the modulation symbols s