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Channel hopping technique: simulation result
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- Authors
- Yuli Yang, Shumei Song, KunQing Xie, Byung-Jang Jeong, BingLi Jiao
- Issue Date
- 2004-09
- Citation
- Vehicular Technology Conference (VTC) 2004 (Fall), pp.4851-4853
- Publisher
- IEEE
- Language
- English
- Type
- Conference Paper
- Abstract
- In mobile systems, the frequency selective fading channel impairs the CDMA signals by the MAI resulting from the non-zero cross-correlations among the relative delayed signals. This interference increases with the number of active channels, i.e. the number of the codes, and limits the capacity strongly. To address this problem, a channel hopping technique is developed, which can transmit more information bits for a given number of codes. Alternatively, for a given value of throughput, the proposed technique can reduce effectively the number of codes and, therefore, increase the capacity by reducing the MAI. To verify the predicted advantage, a simulation is carried out, based on the platform of a modified TDD-WCDMA standard. The results confirm the theoretical result in term of the better BER performance.
- KSP Keywords
- BER performance, Channel Hopping, Cross-Correlation, Delayed signals, Frequency Selective Fading Channels, Mobile system, Zero Cross