Patent ID: 8670378

Claim:
A transform domain multi-user detection apparatus, applied in a telecommunication system, the telecommunication system comprising a plurality of user equipments, the transform domain multi-user detection apparatus comprising: a transform domain multi-user signal processing module, the multi-user signal processing module receiving a plurality of user signals from the plurality of user equipments and judging whether a user signal of the plurality of user signals received is a CDMA signal or an OFDM and/or SC-FDMA signal; a CDMA channel estimation module, coupled to the multi-user signal processing module; and an OFDM and/or SC-FDMA channel estimation module, coupled to the multi-user signal processing module; wherein if the received user signal is the CDMA signal, the CDMA channel estimation module performs a CDMA channel estimation; if the received user signal is the OFDM and/or SC-FDMA signal, the OFDM and/or SC-FDMA channel estimation module performs a OFDM and/or SC-FDMA channel estimation, and then the multi-user signal processing module extracts a wanted signal in the transform domain from the plurality of user signals in the transform domain via a signal extracting method.