无线电工程
無線電工程
무선전공정
RADIO ENGINEERING OF CHINA
2011年
12期
59-60,64
,共3页
苑鹏雁%刘洪君%倪永婧%班亚明
苑鵬雁%劉洪君%倪永婧%班亞明
원붕안%류홍군%예영청%반아명
卫星通信%数字接口转换器%MT9075%锁相环%FIFO
衛星通信%數字接口轉換器%MT9075%鎖相環%FIFO
위성통신%수자접구전환기%MT9075%쇄상배%FIFO
satellite communications%digital interface conversion%MT9075%phase-locked loop%FIFO
卫星通信地面站的有线信号远端传输，无论同轴电缆还是光纤方式，通常使用E系列标准接口。基于G．704的数字接口转换器可实现基带同步串：．斤数据信号与E1接口信号的互相转换。在简要介绍硬件设计和软件设计基础上，详细阐述了串行接口速率自适应、E1帧时隙选择、收发时钟的产生和先进先出存储器的设计思路，给出了性能测试结果。
衛星通信地麵站的有線信號遠耑傳輸，無論同軸電纜還是光纖方式，通常使用E繫列標準接口。基于G．704的數字接口轉換器可實現基帶同步串：．斤數據信號與E1接口信號的互相轉換。在簡要介紹硬件設計和軟件設計基礎上，詳細闡述瞭串行接口速率自適應、E1幀時隙選擇、收髮時鐘的產生和先進先齣存儲器的設計思路，給齣瞭性能測試結果。
위성통신지면참적유선신호원단전수，무론동축전람환시광섬방식，통상사용E계렬표준접구。기우G．704적수자접구전환기가실현기대동보천：．근수거신호여E1접구신호적호상전환。재간요개소경건설계화연건설계기출상，상세천술료천행접구속솔자괄응、E1정시극선택、수발시종적산생화선진선출존저기적설계사로，급출료성능측시결과。
Remote transmission of ground station signals of satellite communication, whether in coaxial line or in fiber, usually adopts E series standards. The digital interface conversion based on G. 704 implements conversion between base band synchronization serial digital signal and E1 signal. The hardware scheme and the software design of the digital interface conversion are briefly introduced. The paper particularly describes the issues of serial interface rate adaptation, slot selection for E1 frame and generation of receiving and transmitting clock as well as the issues of first - in first - out memory. Lastly the paper analyzes the performance test result.
