Performance Analysis of FH-CDMA Communication System with Symbol-Asynchronous Assumption under a Fading Channel
碩士 === 國立中興大學 === 電機工程學系所 === 95 === Frequency hopping (FH) is one kind of code-division multiple-access (CDMA) techniques for wireless communication systems. FH-CDMA enables many users to share the same channel by assigning a unique hopping pattern to every user to distinguish users’ transmission....
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| Format: | Others |
| Language: | en_US |
| Published: |
2007
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| Online Access: | http://ndltd.ncl.edu.tw/handle/73877221503759113427 |
| Summary: | 碩士 === 國立中興大學 === 電機工程學系所 === 95 === Frequency hopping (FH) is one kind of code-division multiple-access (CDMA) techniques for wireless communication systems. FH-CDMA enables many users to share the same channel by assigning a unique hopping pattern to every user to distinguish users’ transmission. In this thesis, we propose a more accurate method to analyze multilevel frequency-shift-keying/frequency-hopping code-division multiple- access (MFSK/FH-CDMA) wireless communication systems using “one-hit” FH patterns, instead of random FH patterns. By also removing the over-optimistic symbol-synchronous assumption, the new method provides a more realistic performance analysis as the MFSK modulation may result in two hits even when one-hit FH patterns are used if symbol transmissions are not synchronized. We derive the probability of getting two hits and include it in the analysis.
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