INTERFERENCE ALIGNMENT METHOD AND DEVICE AND MULTIPLE-CHANNEL COMMUNICATION SYSTEM

摘要

The present invention provides an interference alignment method and device and a multi-channel communication system. The method includes: obtaining channel matrix in a multi-channel communication system; determining a first desired signal and a second desired signal of the multi-channel communication system according to the channel matrix; obtaining precoding vectors and receive vectors, so that at a receiver corresponding to the first desired signal, after a first receive signal is filtered by a receive vector corresponding to the first desired signal, a signal formed by superposing interference signals included therein has a feature of a lattice constellation pattern, and that at a receiver corresponding to the second desired signal, after a second receive signal is filtered by a receive vector corresponding to the second desired signal, interference signals included therein are canceled, where the first receive signal and the second receive signal are transmit signals sent to the corresponding receivers after precoding processing is performed at transmitters by using corresponding precoding vectors. Embodiments of the present invention may improve the system performance in interference alignment.