| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a matched filter that utilizes the regularity of a reference signal sequence group so as to eliminate the need for parallel mounting of n-sets of the matched filters with respect to n-kinds of reference signal sequences on the basis of a hierarchical structural code sequence group thereby suppressing the circuit scale from increasing. SOLUTION: The matched filter that applies all correlation arithmetic operations to a reference signal sequence group obtained by multiplying the hierarchical structural code sequence group having a hierarchical structure with one optional code sequence at the same time, is provided with a shift register 101 that outputs a reference code generated by using the code sequence having the hierarchical structure, multipliers 103 that multiply a spread signal with the reference code, code inverters 201 that inverts the code of outputs from the multipliers 103 according to the regularity in response to the code sequence having the hierarchical structure and adders 104 that sum the outputs of the multipliers 103 and the code inverters.</p> |
