摘要:
The invention provides a method and apparatus for processing downlink communication and a corresponding assisting method and apparatus. According to an embodiment of the invention, there is provided a method for assisting a base station in processing downlink communication in a user equipment, which includes the steps of: estimating a downlink channel between the base station and the user equipment; determining a spatial correlation matrix between the base station and the user equipment according to the result of estimating the downlink channel; determining at least one pre-coding vector among a plurality of pre-stored pre-coding vectors based upon the spatial correlation matrix; and notifying the base station about the determined at least one pre-coding vector and spatial correlation matrix. The invention improves the performance of a system, improves the average throughput and the throughput of an edge user of the multi-user MIMO system and has a wider applicability scope then the original codebook and feedback mechanism.
摘要:
A method of carrying out cyclic delay mapping, wherein, the CDD-like transmitter generate multiple branches of signals c0orresponding to the multiple transmitting antennas with varying cyclic delay mapping rules, so as to make the cyclic delay parameter, corresponding to at least one of the multiple transmitting antennas, vary as time goes by, in order to prevent the system performance from degrading as time goes by.