MIMO communication method and system using the block circulant jacket matrices

摘要

Provided herein is a fast block circulant generated Hadamard matrix which is called jacket matrices of orders N=2p,4p,4kp,np, wherein k is a positive integer. The block Toeplitz circulant jacket matrices possess many properties of Walsh-Hadamard Toeplitz transform and also have the construction of block circulant, which can be applied to fast algorithms for decomposition easily. The matrix decomposition is of the form of the products of block identity I2 matrix and block Hadamard H2 matrix. The block Toeplitz circulant jacket matrices can be applied to the Kronecker MIMO channel.

主权项

1. A multi-input and multi-output (MIMO) communication method of a MIMO communication apparatus having receive antennas and a receive end, comprising:
receiving, by the receive antennas of the MIMO apparatus, a transmit signal; and estimating, by the receive end of the MIMO apparatus, a channel using a receive signal received through the receive antennas, wherein the estimating estimates the channel using formula:Y=ExNT⁢H⁢⁢X+Z Y being the receive signal, Ex being an energy of the transmit signal, NT being a number of transmit antennas, X being the transmit signal, Z being noise, and H being a channel matrix comprising a BCJM (Block Circulant Jacket Matrix) of order n (>4), wherein the H is expressed by formula:
H=Rr1/2HwRt1/2, Rr1/2 being a matrix where correlation between transmit antennas are reflected, Hw being a channel gain matrix, and Rt1/2 being a matrix where a correlation between receive antennas is reflected, wherein the Rt is expressed by the BCJM.