Performance of multi-rate broad band CDMA in a fading channel using multi-user/multi-path interference approximation
| Autor: | W.G. Chambers, H. Azad, Abdol Hamid Aghvami |
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| Rok vydání: | 2002 |
| Předmět: |
Near-far problem
Computer science Code division multiple access ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS Bandwidth (signal processing) Data_CODINGANDINFORMATIONTHEORY CDMA spectral efficiency Frequency-division multiplexing Computer Science::Performance Spread spectrum Time-division multiplexing Computer Science::Networking and Internet Architecture Electronic engineering Fading Computer Science::Information Theory Rayleigh fading Communication channel |
| Zdroj: | Proceedings of ICC/SUPERCOMM '96 - International Conference on Communications. |
| DOI: | 10.1109/icc.1996.535608 |
| Popis: | Future mobile communication systems should be able to support a wide range of services with different bit rates. Spread spectrum CDMA techniques have attracted much attention to be employed in such a system. Different techniques of CDMA could be used to map low, medium and high bit rate data into the same allocated bandwidth, including pure or broad-band CDMA, FDM/FH/CDMA, TDM/TH/CDMA or a hybrid of these systems. This paper investigates multi-rate broad band CDMA using multi-user interference statistics for both Gaussian and Rayleigh fading channels. Approximation of multi-user interference, in general, helps in theoretical approaches to error performance evaluation and, in particular, is quite useful for a simulation approach in a fading channel. Some results of a multi-rate broad-band CDMA with 2 services (low and high bit rates) is presented. |
| Databáze: | OpenAIRE |
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