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標題: 採用相同位元功率假設之雙碼重光纖分碼多工系統
Double-Weight Optical CDMA Systems With The Same-Bit-Power Assumption
作者: 陳志豪
Chen, Chih-Hao
關鍵字: CDMA;分碼多工;Variable-Weight;可變重碼
出版社: 電機工程學系所
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Communication technologies are expected to provide multiple-rate transmission and support the growing popularity of multimedia services flexibly and efficiently. To provide differential quality-of-service in optical code-division multiple access, variable-weight optical codes were designed and analyzed under a conventional assumption of identical power in every optical pulses (i.e., same chip power). To account for power limit of laser sources, we assume the use of same optical power in each bit duration (i.e., same bit power) in this thesis. For illustration, we focus our study on double-weight codes under both same-chip-power and same-bit-power assumptions. A new and accurate performance-analytical model for double-weight codes is developed and validated with computer simulation. We show that heavy-weight codes do not always perform better than light-weight codes under the same-bit-power assumption, contrary to previous findings under the same-chip-power assumption.
其他識別: U0005-1308201012262200
Appears in Collections:電機工程學系所

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