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    • 3. 发明申请
    • CDMA系统同频邻小区强干扰消除的方法
    • WO2007115434A1
    • 2007-10-18
    • PCT/CN2006/000652
    • 2006-04-12
    • 中兴通讯股份有限公司耿鹏江海李萍厉治洪
    • 耿鹏江海李萍厉治洪
    • H04B1/707
    • H04B1/7107H04B1/7105
    • A strong interference canceling method for neighboring cells using the same frequency in a CDMA system comprises the following steps: (a) the channel estimation on all users in neighboring cells using the same frequency is processed, and one or more strong interference user(s) is selected, whose power is strongest among all channel impulse response in neighboring cells; (b) the interference of the strong interference user in neighboring cells using the same frequency, which is obtained in step (a), is subtracted from training sequence part in received signals, then the channel estimations for all users in local cell are processed; (c) the joint detection for multi users is obtained for the data part in received signals, using the channel impulse response estimations on strong users in neighboring cells using the same frequency which is obtained from step (a) and the channel impulse response estimations on all users in local cell which is obtained from step (b), then the symbol information of all users in local cell is demodulated. Present invention could cancel the interference which local user signal detection is affected from the strong interference user in neighboring cells using the same frequency, and enhance the performance of signal detection for users in local cell.