| 摘要 |
<p>PURPOSE:To reduce the bit error rate in a code division multiple access demodulator. CONSTITUTION:The reception signal of the base band of a spectrum spread signal is inputted to a memory 13 having storage areas provided correspondingly to respective transmission stations, and a control part 19 designates the station, which detects a division of symbols, and reads out data of the designated station from the memory 13 and calculates a symbol estimated value related to plural symbols by a correlation calculating part 14, a spread code generating part 15, and a correction calculating part 16, and interference data corresponding to the symbol estimated value is removed from data of stations other than the designated station in the memory 13 to rewrite the contents of the memory 13 by an interference quantity calculating part 17 and a removal quantity calculating part 18. A series of these operationss are repeated to eliminate the interference components from data in the memory 13, thus reducing the bit error rate.</p> |
