| 摘要 |
<p>PROBLEM TO BE SOLVED: To simplify the realization of a canceller by simplifying processing for especially generating a spread code series in the DS-CDMA(direct spread - code division multiple access) multi-user serial interference canceller. SOLUTION: In a DS-CDMA multi-user serial interference canceller, an inverse spread code generator 12 in a preliminary processing stage generates the initial setting value of an inverse spread code series, in advance at a head point of time of each cancellation processing unit by the hardware, the initial setting value is added to a reception signal block, and the result is transferred to an interference cancellation section. The interference cancellation section reads the initial setting value of the added series and sets the value to an inverse spread code generator 113, which continues producing an inverse spread code series with correctly set initial value, even when a code series changes with each reception signal block each time.</p> |
