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Performance of Time-Frequency Two Dimensional Spread Spectrum System in Multi-tone Jamming Environment |
Zhou Jian; Tang You-xi; Xie Sheng-lin; Li Shao-qian |
Nat. Key Lab. of Communication, University of Electronic Science and Technology of China, Chengdu 610054, China |
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Abstract This paper investigates the Bit Error Rate (BER) of the time-frequency 2-Dimensional Spread Spectrum (2DSS) in Additive White Gaussian Noise (AWGN) channel with the presence of multi-tone jamming. Analytical results indicate that the harmful effect caused by the multi-tone jamming can be completely eliminated when the jamming signals are placed on certain sub-carriers’ central frequencies and if the corresponding row sums of the 2-dimensional spreading code matrix are equal to zero. The simulation results are provided, which show the agreement between theoretical analysis and simulation results.
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Received: 10 March 2005
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