| 摘要 |
<p>PROBLEM TO BE SOLVED: To improve the data transmission efficiency by reducing the overhead of a high-order layer protocol. SOLUTION: A pilot signal subjected to spread spectrum processing by a single spread code is sent as a post amble for a prescribed period after a transmitter sends multiplexed information. Then a pilot signal correlation device 302 applies correlation demodulation to the received post-amble sent based on a pilot signal spread code 401 and when a pilot signal correlation output 302 is a reference value or over, the end of transmission of an information signal is recognized.</p> |
