| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a high system processing rate by providing capture performance accelerated rather than an existent parallel system by providing a reference matching filtering means, which is parallelly connected to the input side of a detected matching filtering means, for estimating the distribution of an interference component inputted to the detected matching filtering means. SOLUTION: N parallelly connected detected matching filters 41 input a sequence similar to a transmitted similar noise sequence as a received signal, select a maximum value among received signals and output it to a comparator 44. A reference matching filter 42 inputs a sequence orthogonal with the transmitted similar noise sequence as a received signal, filters it and removes multiple access interference. A gain multiplier 43 calculates a gain factor and outputs a discriminated critical value multiplied with the output of the reference matching filter 42 to the comparator 44. The comparator 44 compares the output of the detected matching filter 41 with the discriminated critical value outputted from the gain multiplier 43 and when the output is smaller than this value, the received signal is inputted again.</p> |
