Ramanujan滤波多载波调制及高效实现算法的研究  

Research on Ramanujan-FMT modulation and the efficient implementation algorithm

作　　者：郭旭静[1] 黄苏一 王祖林[1] 周丽娜[1] 

机构地区：[1]北京航空航天大学电子信息工程学院,北京100191

出　　处：《新型工业化》2013年第3期40-49,共10页The Journal of New Industrialization

基　　金：高等学校博士学科点专项科研基金资助课题(No.20091102120010)

摘　　要：总结了完全重建的Ramanujan-Fourier变换(RFT)的矩阵形式,利用RFT具有整数变换及频带分集的特点,提出将RFT变换应用于滤波多载波调制系统,在同样通道数M的情况下(M=64),乘法计算量较快速傅里叶变换(FFT)降低55%。并且推导出一种时域高效实现系统,该系统具有分集增益及频带可选择特性。仿真结果表明,在加性高斯白噪声信道中,该系统在信噪比6dB时误码率可以达到10^(-4);在瑞利衰落信道中,信噪比14dB时误码率可以达到10^(-4)。The matrix form of reconstructive Ramanujan-Fourier Transform (RFT) was present. Base on the integer property and frequency diversity, a Ramanujan-filtered multitone (Ramanujan-FMT) modulation system was proposed. The multiplication computation amount can be reduced by 55%than that of FFT when the number of channels is 64. Furthermore, an efficient implementation system in the time domain was proposed with transition diversity and selective modulation band. The simulation results show that, the BER performance of the new system can reach at 10-4 in AWGN channel with the SNR equal to 6dB, and reach at 10-4 in Rayleigh fading channel with the SNR equal to 14dB.

关 键 词：多载波调制 Ramanujan基 RFT IRFT 

分 类 号：TN9[电子电信—信息与通信工程] TP3[自动化与计算机技术—计算机科学与技术]