Orthogonal complex spreading method for multichannel and apparatus thereof

摘要

A permutated orthogonal complex spreading method for a multichannel, comprising the steps of :
complex-summing αn1WM,n1Xn1 which is obtained by multiplying a predetermined orthogonal Hadamard sequence WM,n1 by a data Xn1 and a gain αn1 and αn2WM,n2Xn2 which is obtained by multiplying the orthogonal Hadamard sequence WM,n2 of the second block by a predetermined data Xn2 and a gain αn2 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-mutiplying which are summed in the complex type and WM,I+jPWM,Q which are formed of P representing a predetermined sequence or a spreading code or a predetermined integer using a complex multiplier and WM,I and WM,Q 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 Wk-1 based on the MxM Hadamard matrix, the conditions WM,n1=W0, WM,n2=W2q+1 (where q represents a predetermined number in a range from 0 to (M/2) - 1) are obtained and the conditions WM,I=W0, WM,Q=W1 (where n represent a n-th block number) for thereby complex-multiplying αn1W0Xn1+jαn2W2qXn2 and W0+jPW1.