Patent ID: 8644410
Filing Date: 2014-02-04
Classification: H04B

Abstract:
1. A base station comprising: a local signal generator configured to generate a local signal; a first mixer configured to generate a first mixed signal obtained by mixing a first signal from a first antenna and the local signal from the local signal generator; a first analog digital converter configured to convert the first mixed signal to a first digital signal; a first interference detecting unit configured to detect a first interference signal based on the first digital signal; a first interference removing unit configured to generate a first processed signal by removing the first interference signal by a first filter having a first filter central frequency which is shifted in a first direction from a first interference central frequency of the first interference signal; a second mixer configured to generate a second mixed signal obtained by mixing a second signal from a second antenna and the local signal from the local signal generator; a second analog digital converter configured to convert the second mixed signal to a second digital signal; a second interference detecting unit configured to detect a second interference signal based on the second digital signal; a second interference removing unit configured to generate a second processed signal by removing the second interference signal by a second filter having a second filter central frequency which is shifted in a second direction from a second interference central frequency of the second interference signal; and a combining unit configured to combine the first processed signal and the second processed signal, wherein the first direction of the first filter central frequency of the first filter shifted from the first interference central frequency of the first interference signal and the second direction of the second filter central frequency of the second filter shifted from the second interference central frequency of the second interference signal are different.