TRANSMISSION METHOD AND SYSTEM FOR COOPERATIVE RELAY BASED ON LIMITED FEEDBACK PRECODING

摘要

The present invention discloses a transmission method and system for cooperative relay based on limited feedback precoding. The method includes: a base station and a relay station receive signals from multiple users (401); the relay station judges whether the received signals are correct or not, forwards the correctly received signals to the base station in a precoding manner or in a non-precoding manner, and does not forward the incorrectly received signals (402); the base station estimates the signals of a user by performing combination decision for the received signals directly transmitted from the user and the signals forwarded by the relay station for the same user, and estimates the signals of the user by performing direct decision for the signals which are directly transmitted from the user and are not forwarded by the relay station (403). The present invention can improve the forwarding efficiency and the bit error performance for a relay system.