Patent ID: 7848443

Claim:
A pilot-embedded data transmission and channel estimation method for a Multiple-Input Multiple-Output (MIMO) communication system comprising the steps of: selecting a data-bearer matrix “A” and a pilot matrix “P” based on orthogonality constraints; allocating respective fractions of a fixed amount of transmission power to said data-bearer matrix “A” and said pilot matrix “P”; converting a space-time codeword data matrix “D” into pilot-embedded data matrix to be transmitted according to said fixed amount of transmission power; transmitting at least one of said pilot-embedded data matrix from a transmitting antenna defining one end of a data channel; receiving at least one of said pilot-embedded data matrix at a receiving antenna defining an opposite end of the data channel; estimating from said received pilot-embedded data matrix at least one channel state coefficient indicative of a characteristic of the data channel by a hybrid channel estimation; and recovering said space-time codeword data matrix “D” from said received pilot-embedded data matrix using said estimated channel state coefficient.