多音干擾環(huán)境中時(shí)頻二維擴(kuò)頻系統(tǒng)的性能
Performance of Time-Frequency Two Dimensional Spread Spectrum System in Multi-tone Jamming Environment
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摘要: 該文分析并仿真了加性白高斯噪聲信道多音干擾環(huán)境中的時(shí)頻二維擴(kuò)頻的比特誤碼率性能。理論分析發(fā)現(xiàn)，當(dāng)多音干擾在子載波中心頻率上、且二維擴(kuò)頻矩陣多音干擾所在的子載波對(duì)應(yīng)的時(shí)間軸所對(duì)應(yīng)的行元素之和為零時(shí)，多音干擾被完全抵消。同時(shí)給出了計(jì)算機(jī)仿真結(jié)果。結(jié)果表明，理論分析與仿真結(jié)果吻合。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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Xing H, Rinne J. The performance analysis of a two dimensional CDMA system for frequency selective channels [A]. GLOBECOM 1998 [C]. Sydney, Australia, Nov. 8-12, 1998, vol 5: 2537.2542.[2]Xiao L, Liang Q L. A novel MC-2D-CDMA communication systems and its detection methods [A]. ICC 2000 [C]. New Orleans, USA, June 18-22, 2000: 1223.1227.[3]唐友喜, 李少謙. 廣義時(shí)頻二維擴(kuò)頻在加性白高斯噪聲信道中的性能[J].電子與信息學(xué)報(bào).2004, 26(2):248-瀏覽[4]Tang Youxi, Cha Guangming. The performance of a kind of CDMA receivers in single-tone jamming environment [A]. IEEE ISSSTA96[C]. Mainz, Germany, Sept. 1996: 22.25.[5]Nazari N, Ziemer R E. Computationally efficient bounds for the performance of direct-sequence spread-spectrum multiple-access communications systems in jamming environments [J].IEEE Trans. on Commun.1988, 36(5):577-[6]Chang Mingxian, Su Yu T. Performance analysis of equalized OFDM systems in Rayleigh fading [J].IEEE Trans. on Wireless Commun.2002, 1(4):721- -
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