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The Construction of GOS Spreading Code Sets and Their Applications into Multi-Rate Multe-Cell QS-CDMA Systems

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Abstract

In this paper, a class of generalized orthogonal sequences (GOS) is presented with the the following characteristics, (1) the cross-correlations in the vicinity of zero shift (zero shift is excluded) between two arbitrary sequences from different GOS sets are zeros; (2) the cross-correlations in the vicinity of zero shift between two arbitrary sequences from different subsets of the same GOS set are zeros; and (3) two arbitrary different sequences from the same subset of the same GOS set are orthogonal. By applying the GOS sets to multi-rate multi-cell quasi-synchronous CDMA (QS-CDMA) system, the system interference is analyzed and compared with that of well-known concatenated orthogonal/PN sequence sets. It is shown that due to the zero correlation properties in the vicinity of zero shift, the interference of system employing GOS sets can achieve a bigger reduction than concatenated orthogonal/PN sequence sets, thus resulting better BER performance than that of latter under the same conditions.

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Authors and Affiliations

  1. School of Computer and Communication Engineering, University of Science and Technology Beijing, Beijing, 100083, China

    Lifang Feng

  2. Provincial Key Lab of Information Coding and Transmission, Institute of Mobile Communications, Southwest Jiaotong University, Chengdu, 610031, China

    Pingzhi Fan & Xiaohu Tang

  3. School of Telecommunication Engineering, Beijing University of Posts and Telecommunications (BUPT), Beijing, 100876, China

    Daoben Li

Authors
  1. Lifang Feng
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  2. Pingzhi Fan
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  3. Xiaohu Tang
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  4. Daoben Li
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Correspondence to Lifang Feng.

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Feng, L., Fan, P., Tang, X. et al. The Construction of GOS Spreading Code Sets and Their Applications into Multi-Rate Multe-Cell QS-CDMA Systems. Wireless Pers Commun 67, 435–451 (2012). https://doi.org/10.1007/s11277-012-0831-z

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  • DOI: https://doi.org/10.1007/s11277-012-0831-z

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