Telefonaktiebolaget Lm Ericsson (Publ)

St-Ericsson Sa

Daijun Zhang

Zhixun Tang

Liping Zhang

Xie Li

A method, apparatus, receiver, computer program and storage medium for joint detection are disclosed. The joint detection method includes categorizing interference signals based on level of interference so as to obtain a strong interference signal, cancelling the strong interference signal from a received signal, and performing a joint detection by utilizing a matched filtering result of a remaining signal. In one embodiment, it is to firstly determine whether a strong interference codes corresponding to an intra-frequency adjacent cell exists in an active code list or not, recovering a strong interference signal transmitted by a Node B if the strong interference codes exists, applying an interference cancellation to a received signal received by a receiver so as to obtain a matched filtering result of a remaining signal derived by subtracting the strong interference signal from the received signal, performing a joint detection by utilizing the matched filtering result of the remaining signal, and outputting a demodulated result. In at least one embodiment, the computation complexity of the joint detection is reduced, and the accuracy of the joint detection is improved.

Method, apparatus, receiver, computer program and storage medium for joint detection

The present invention relates a method, apparatus, receiver, computer program for joint detection. In the method, it is firstly determined if whether a number of original active codes is beyond a predefined threshold or not, and when the number of the original active codes is beyond the predefined threshold and a strong interference code exists in the active codes corresponding to intra-frequency adjacent cells, it is to apply an interference cancellation to a receive signal, cancel MAI caused by a strong interference signal corresponding to the strong interference code, and perform a joint detection by utilizing a matched filtering result of a remaining signal after the interference cancellation for the joint detection. According to at least one embodiment of the present invention, when there is large interference in the intra-frequency adjacent cells and the number of the active codes is beyond a maximum threshold, the joint detection performance is improved.

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Beijing, China

Daijun Zhang