pilot bit 中文意思是什麼
pilot bit
解釋
導向鉆頭-
The viterbi decoder with hard decision designed by the paper, is aimed at ( 3, 1, 9 ) convolutional coding. the data rate is 9. 6kbps. the data rate received by the rake receiver is spreaded by 127 - bit spread sequences, added pilot signals and modulated by qpsk
該課題所設計viterbi譯碼是針對( 3 , 1 , 9 )卷積碼的硬判決譯碼,數據速率為9 . 6kbps ; rake接收機所接收的數據是擴頻因子為127 、加入導頻且經qpsk調制的擴頻信號,使用verilg硬體描述語言在xilinx公司的ise環境下在用現場可編程門陣列( fpga )來實現viterbi譯碼器和rake接=收機的功能。 -
There are different ways to make the bit synchronization, for example : the technique of the pilot frequency, the technique of some change about the baseband signal
為了保證在同步傳輸系統中的位同步,有導頻及對基帶信號信號直接變換的方式,直接變換的方式中,使用線路編碼是比較常見的。
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