US Patent 7149255 Method to increase the bit rate in a communications system

Disclosed is a method and a device to increase the bit rate in a communications system comprising N transmitters (2N) and M receivers (3M), with M greater than or equal to N. The method comprises the following steps.a) simultaneously sending different messages on several of the N (2N) transmitters,b) simultaneously receiving the superimposition of the messages sent during the step a) on several of the M (3M) receivers or reception sensors,c) estimating the characteristics of the transmission channel for each pair constituted by a transmission sensor and a receiver sensor,d) jointly estimating all or at least the majority of the messages received in taking account of the signals as well as the characteristics of the transmission channel.