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Proceedings Paper

On the performance of multicarrier direct sequence spread spectrum with band-limited Gaussian interference and multipath fading
Author(s): Zezhou Luo; Bin Ye; Lier Bao
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Paper Abstract

Multicarrier spread spectrum (MC-SS) system employs frequency diversity, hence obtains the ability combating band-limited interference. In this paper, we consider a multicarrier direct sequence spread spectrum (MC-DS-SS) system, in which every sub-channel is spread by a pseudo number (PN) code respectively, making each sub-channel's bandwidth larger than jammer's. The system has the advantages of large processing gain, low interception probability, and robustness against partial band interference. We analyze bit-error ratio (BER) properties of MC-DS-SS system under partial band interference, and compare it with single carrier DS system. It is shown by the comparisons that whenever the diversity gain is observed, MC-DS-SS system always outperforms single carrier DS system under the same interference environment. When jammer spreads its bandwidth over the entire frequency range of desired signal, MC-DS-SS still outperforms single carrier DS-SS.

Paper Details

Date Published: 10 November 2007
PDF: 6 pages
Proc. SPIE 6795, Second International Conference on Space Information Technology, 67952N (10 November 2007); doi: 10.1117/12.774836
Show Author Affiliations
Zezhou Luo, Huazhong Univ. of Science and Technology (China)
Bin Ye, Huazhong Univ. of Science and Technology (China)
Lier Bao, Huazhong Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 6795:
Second International Conference on Space Information Technology

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