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Two-Dimensional Information Transmission Method in DSSS

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Abstract

In this paper, a two-dimensional information transmission method based on k step-complex spread spectrum (KS-CSS) is proposed. The aim is to solve the contradiction between the bandwidth and processing gain of a traditional direct-sequence spread spectrum (DSSS) channel, and to achieve better system performance (such as by obtaining higher processing gain and higher bandwidth utilization). Using the multi-domain characteristics of DSSS signals, based on the time–frequency characteristics of a DSSS, the code-domain characteristics are further combined. The KS-CSS method calculates the control coefficients such as modulation order, PN code group, and conversion time. Thus, dependence mapping for additional two-dimensional data transmission is established. Then, the spread spectrum pseudo-code is mapped and processed with one-dimensional data. Theoretical analysis and simulation results show that the time–frequency domain characteristics of the KS-CSS signal are consistent with those of traditional DSSS signals. However, the information transmission rate can be increased by more than 100%, and the bit error rate of data can be significantly improved. The high-speed transmission performance and low bit error rate of the KS-CSS method can provide a theoretical basis and technical reference for high-performance spread spectrum communication.

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Acknowledgements

This work is supported in part by the National Natural Science Foundation of China (Grant Nos. 61501309, 61971291), the Liaoning Natural Science Foundation of China (Grant No. 2020-MS-215), the Liaoning Provincial Colleges and Universities Innovative Talents Support Program, and the Liaoning BaiQianWan Talents Program(Grant No. 2020921087).

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Authors and Affiliations

  1. School of Information Science and Engineering, Shenyang Ligong University, Shenyang, China

    Fang Liu & Mowen Cheng

  2. Graduate School, Shenyang Ligong University, Shenyang, China

    Yongxin Feng

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  1. Fang Liu
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  2. Mowen Cheng
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  3. Yongxin Feng
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Correspondence to Fang Liu.

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Liu, F., Cheng, M. & Feng, Y. Two-Dimensional Information Transmission Method in DSSS. Wireless Pers Commun 118, 1039–1054 (2021). https://doi.org/10.1007/s11277-020-08057-9

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  • DOI: https://doi.org/10.1007/s11277-020-08057-9

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