A permutated orthogonal complex spreading method for a multichannel comprising the steps of :
complex-summing C n1WMn1Xn1 which is obtained by multiplying a predetermined orthogonal Hadamard sequence WMn1 by a data Xn1 and a gain ?n1 and ?n2WMn2Xn2 which is obtained by multiplying the orthogonal Hadamard sequence WMn2 of the second block by a predetermined data Xn2 and a gain ?n2 in the first block during a multichannel data distribution ;
summing only the in-phase information based on the output signals from a plurality of other channels from two blocks and summing only the quadrature phase information; and
complex-multiplying which are summed in the complex type and WMI+jPWMQ which are formed of P representing a predetermined sequence or a spreading code or a predetermined integer using a complex multiplier and WMI and WMQ which are the orthogonal Hadamard sequences and outputs the signal as an in-phase information and a quadrature phase information
wherein in said step for

multiplying the orthogonal Hadamard sequence a sequence vector of the k-th column or row is set to W k-1 based on the MxM Hadamard matrix the conditions WMn1=W0 WMn2=W2q+1 (where q represents a predetermined number in a range from 0 to (M/2)-1) are obtained and the conditions WMI=W0 WMQ=W1 (where n represent a n-th block number) for thereby complex-multiplying ?n1W0Xn1+j?n2W 2qXn2 and W0+jPW1.