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Precise Analysis of Bit-Error Probability for Asynchronous Multicode DS-CDMA Systems
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- Authors
- Seung Joon Lee, Norman C. Beaulieu
- Issue Date
- 2006-04
- Citation
- IEEE Transactions on Communications, v.54, no.4, pp.637-647
- ISSN
- 0090-6778
- Publisher
- IEEE
- Language
- English
- Type
- Journal Article
- Abstract
- A precise bit-error probability (BEP) analysis method is derived for a multicode direct-sequence code-division multiple-access (DS-CDMA) system in an additive white Gaussian noise channel. The method is applicable to a multicode DS-CDMA system with an arbitrary number of multiple code sequences, and any selection of multiple code sequences. The precise method gives results that discriminate the effect of the selection of different multiple code sequences on the BEP, whereas Gaussian approximations (GAs) do not. Thus, the new method can be used to select the best multicode set for a given system, a task that cannot be achieved using GAs. A two-step analytical procedure enables deriving an explicit, compact form for the CF of the receiver decision statistic in a DS-CDMA system with an arbitrary number of multiple code sequences, and for any selection of multiple code sequences. © 2006 IEEE.
- KSP Keywords
- Additive white Gaussian noise(AWGN), Analysis method, Analytical procedure, Bit-error-rate(BER), Code division Multiple Access(CDMA), DS-CDMA system, Direct-sequence(DS), Direct-sequence code-division multiple-access(DS-CDMA), Gaussian approximation, Two-Step, additive white Gaussian noise channel