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

A joint detection apparatus for a Direct Sequence-Code Division Multiple Access device, the joint detection apparatus comprising:

• a strong interference code determination unit configured to determine whether a strong interference code corresponding to an intra-frequency adjacent cell of a servicing cell of the device exists in an active code list by determining if a ratio of a first power to a second power is beyond a first threshold, wherein the first power comprises a power corresponding to an interference code, and wherein the second power comprises a power corresponding to an active code of the device;
• a signal recover unit configured to recover a strong interference signal corresponding to the strong interference code if the strong interference code exists on the active code list;
• an interference cancellation unit configured to:
• apply an interference cancellation to a received signal by cancelling the strong interference signal from the received signal to obtain a remaining signal;
• and
• obtain a matched filtering result of the remaining signal;
• and
• an equalizer configured to utilize the matched filtering result of the remaining signal to perform a joint detection and to output a demodulated result.

A receiver used in a Direct Sequence-Code Division Multiple Access device, the receiver comprising a joint detection apparatus, the joint detection apparatus comprising:

• a strong interference code determination unit configured to determine whether a strong interference code corresponding to an intra-frequency adjacent cell of a servicing cell of an device exists in an active code list by determining if a ratio of a first power to a second power is beyond a first threshold, wherein the first power comprises a power corresponding to a strong interference code, and wherein the second power comprises a power corresponding to an active code of the device;
• a signal recover unit configured to recover a strong interference signal corresponding to the strong interference code if the strong interference code exists on the active code list;
• an interference cancellation unit configured to:
• apply an interference cancellation to a received signal by cancelling the strong interference signal from the received signal to obtain a remaining signal;
• and
• obtain a matched filtering result of the remaining signal;
• and
• an equalizer configured to utilize the matched filtering result of the remaining signal to perform a joint detection and to output a demodulated result.

A computer program product stored in a non-transitory computer readable medium for controlling a processor in a Direct Sequence-Code Division Multiple Access device, the computer program produce comprising software instructions which, when run on the processor, causes the Direct Sequence-Code Division Multiple Access device to:

• determine whether a strong interference code corresponding to an intra-frequency adjacent cell of a servicing cell of the device exists in an active code list by determining if a ratio of a first power to a second power is beyond a first threshold, wherein the first power comprises a power corresponding to an interference code, and wherein the second power comprises a power corresponding to an active code of the device;
• if the strong interference code exists on the active code list, recover a strong interference signal corresponding to the strong interference code;
• apply an interference cancellation to a received signal by cancelling the strong interference signal from the received signal to obtain a remaining signal;
• obtain a matched filtering result of the remaining signal;
• and
• perform a joint detection by utilizing the matched filtering result of the remaining signal to output a demodulated result.