offset keying 中文意思是什麼
offset keying
解釋
移位鍵控-
Ijf - oqpsk is actually to modulate the ijf codes by the offset quadrature phase shift keying
Ijf ? oqpsk實際上是對ijf信號再進行正交四相相移鍵控的調制技術。 -
This project study the all - digital modulation and demodulation of / 4 offset differentially encoded quadrature phase shift keying ( / 4 - dqpsk ). then use / 4 - dqpsk digital modulation and baseband differential demodulation technology to implement digital signal transmission. the bite rate is 500kb / s and the intermediate frequency is 2mhz
本課題對/ 4 - dqpsk的全數字調制解調技術進行研究，利用/ 4 - dqpsk數字調制和基帶差分解調技術實現數字信號的傳輸，實現傳輸碼率500kbps ，調制中頻2mhz 。
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