Abstract
In this paper, a multicarrier DS-CDMA system which employs Z-Complementary Sequences (ZCS) as spreading code is investigated. The new system can not only eliminate multipath interference and Multiple Access Interference (MAI), but also support flexible number of users compared with system using Orthogonal Complementary (OC) codes. Multicarrier DS-CDMA using OC codes can be regarded as a special case of our proposed system. Zero Correlation Zone (ZCZ) of ZCS can be flexibly adjusted to meet the requirements on the user number and maximum multipath and inter-user delay, in this way, more users can be supported without losing interference-free property. The effectiveness of the proposed system is validated through theoretical analysis and simulation results.
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Supported by the National Natural Science Foundation of China (No.60772087, No.90604035), 111 Project (No.111-2-14).
Communication author: Tu Yifeng, born in 1978, male. Ph.D. candidate.
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Tu, Y., Fan, P., Yuan, W. et al. Quasi-synchronous multicarrier DS-CDMA using Z-Complementary sequences. J. Electron.(China) 26, 487–491 (2009). https://doi.org/10.1007/s11767-008-0065-0
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DOI: https://doi.org/10.1007/s11767-008-0065-0
Key words
- Orthogonal Complementary (OC) codes
- Multicarrier DS-CDMA
- Z-Complementary Sequences (ZCS)
- Zero Correlation Zone (ZCZ)