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Sensitivity of Carrier Frequency Offset and MAI in DAPSK-MC-CDMA Systems

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Abstract

A less complex system by integrating non-coherent differential amplitude and phase shift keying modulation with multi-carrier code division multiple access (DAPSK-MC-CDMA) is introduced. The proposed DAPSK-MC-CDMA system can reduce the system complexity and also maintain a good performance and high-spectral efficiency. The paper firstly shows that the performance degradation caused by the multiple access interference (MAI) and the carrier frequency offset can be effectively controlled in a DAPSK-MC-CDMA system. Simulation results illustrate that both the MAI and the carrier frequency offset in the DAPSK-MC-CDMA is much less sensitive than the conventional MC-CDMA system. Furthermore, using the DAPSK modulation, the detection methods of equal gain combining, maximum ratio combining, and minimum mean square error combining now can be used in the multiple-ary DAPSK-MC-CDMA system.

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Authors and Affiliations

  1. Graduate Institute of Communication Engineering, National Chi Nan University, 1 Univ. Rd., Puli, 545, Taiwan, ROC

    Gen-Horng Chen & Shyue-Win Wei

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  1. Gen-Horng Chen
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  2. Shyue-Win Wei
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Correspondence to Shyue-Win Wei.

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Chen, GH., Wei, SW. Sensitivity of Carrier Frequency Offset and MAI in DAPSK-MC-CDMA Systems. Wireless Pers Commun 43, 437–447 (2007). https://doi.org/10.1007/s11277-006-9232-5

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  • DOI: https://doi.org/10.1007/s11277-006-9232-5

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