Firstly the basic transmitter , including convolutional encoding , interleaving , scrambling , walsh modulation , quadrature spreading and baseband filtering was studied 首先研究基本的發(fā)射機(jī),包括卷積編碼、交織、擾碼、沃爾什調(diào)制、正交擴(kuò)頻以及基帶濾波。
The transmit circuit includes convolutional encoding , framing , differential encoding , shaping filter , pn generator , hopping pattern generator , etc . the main part of receive circuit is matched filter 發(fā)送電路包括卷積編碼、成幀、差分、成形濾波、 pn發(fā)生器和跳頻圖案發(fā)生器等;接收電路的主要部分是匹配濾波器。