| 摘要 |
<p>PROBLEM TO BE SOLVED: To reduce the circuit scale of an adder in a CDMA transmission circuit that allocates a plurality of transmission data to a plurality of transmission sequences and transmits the resulting transmission sequences. SOLUTION: A selector a-100 outputs each transmission data to any of spread sections 310, 320 and 330. The spread sections apply spread/synthesis processing to transmission data and provides an output of a spread synthesis signal. A selector section 400 outputs an output of the spread section 330 to a 2-input adder 600 or 700. The 2-input adder 600 sums the spread synthesis signal from the spread section 310 to the spread synthesis signal from the selector section 400 and the 2-input adder 700 sums the spread synthesis signal from the spread section 320 to the spread synthesis signal from the selector section 400. Number of multi-input adders in the spread sections 310, 320 and 330 is decreased.</p> |
