time division multiplex system 中文意思是什麼
time division multiplex system
解釋
時分多路復用系統-
In a time division multiplex ( tdm ) system, a repetitive group of signals resulting from a signal sampling of all channels, including any additional signals for synchronizing and other required system information
在時分多路復用( tdm )系統中,由所有通道的信號采樣中產生的重復信號組,它包括為同步要求的附加信號和其它需要的系統信息。 -
Multicarrier wireless communications have been widely investigated in the past decades. recently, two - dimensional spread spectrum ( 2d - ss ) system has drawn a lot of attention because of its full utilization of spreading characteristics in the frequency domain and time domain. compared with multicarrier code division multiplex access ( mc - cdma ), 2d - ss system can effectively mitigate multiple access interference ( mai ) due to spreading in the time domain
當前多載波無線通信技術得到了廣泛的研究,二維擴頻通信系統是近年來提出的新的擴頻通信方式,由於二維擴頻系統從時域和頻域上分別對數據信號進行頻譜擴展,因此它同時具有時域擴頻和頻率擴頻通信系統的特點,是對傳統的一維時域直接序列擴頻和多載波擴頻的推廣。
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