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標題: 運用維特比解碼器於多階層質數碼之無線跳頻分碼多工系統
Using Viterbi Decoders in FH-CDMA Wireless Systems Based on Multilevel Prime Codes
作者: 羅櫻心
Lo, Jastina
關鍵字: FH-CDMA;跳頻分碼多工;Multilevel Prime Codes;Viterbi decoding;Trellis;多階層質數碼;維特比解碼;籬笆
出版社: 電機工程學系所
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The innovations and applications of wireless communication technologies lead to recent rapid developments in the mobile communication and wireless networks. Frequency-hopping code-division multiple-access (FH-CDMA) systems have been widely studied and known to be effective means of communications in combating multipath fading because of their inherent frequency diversity. By assigning different FH codes to different users, FH-CDMA systems can allow simultaneous users utilize the same frequency band to send their data at the same time. Coded modulation is a technique which transmitting symbols of multiple data bits atop of FH-CDMA. In this thesis, Multilevel Prime Codes (MPC) codes have been chosen as the modulation codes in this kind of two-level FH-CDMA system because they support faster data rate than other coded-modulation schemes. Through the use of our specially “pruned” trellis and the Viterbi decoding algorithm, this new scheme will reduce the computing complexity, and can improve system performance.
其他識別: U0005-2809201116171700
Appears in Collections:電機工程學系所

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