Method, transmitter and receiver for data transmission in a CDMA system using orthogonal complementary spreading matrices for two-dimensional spreading of the data in both frequency- and time-axis

摘要

Each data bit (D) is transmitted on at least two different units (F1, F2) of a first radio resource. At the transmitter side, for each unit (F1, F2) of the first radio resource the data bits (D) are expanded using a coding matrix. A complex matrix algebra process involving autocorrelation follows, in accordance with given mathematical rules. Each data bit is transmitted by the units (F1, F2), together with expansion units. The matrices and methods employed are further elaborated. Independent claims are included for the corresponding transmitter and receiver.