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一种无平方根运算的QRD-LSL插值算法研究

Research of QRD-LSL interpolation algorithm based on square-root-free
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摘要 为了降低基于QR分解技术的最小二乘格型(QRD-LSL)插值算法的计算复杂度,提出一种无平方根运算的QRD-LSL插值算法,并将其用于对直扩系统中窄带干扰的抑制。该算法通过将无平方根运算的Givens旋转变换代入原QRD-LSL插值算法,避免了QR分解过程中的求平方根运算,降低了计算复杂度及硬件实施难度,提高了有限精度场合下算法的鲁棒性。仿真结果表明,改进算法较QRD-LSL插值算法具有更小的稳态误差以及更好的数值稳健性,并且保持了良好的NBI抑制效果。 To reduce the complexity of the QR-decomposition-based least-squares lattices(QRD-LSL) interpolation algorithm used in narrow-band interference(NBI) suppression, this paper proposed a square-root-free(SRF) QRD-LSL interpolation algorithm. The proposed interpolation algorithm, which was developed by applying SRF Givens rotation with feedback mechanism, could effectively avoid the square-root computations in QR-decomposition and improve QRD-LSL interpolation algorithm robustness in finite precision environment. The results of computer simulation confirm that the steady-state performance and the numerical robustness of the proposed algorithm outperforms the conventional QRD-LSL interpolation algorithm and holds good performance of NBI suppression in DSSS.
出处 《计算机应用研究》 CSCD 北大核心 2012年第3期897-899,共3页 Application Research of Computers
基金 国防科技重点实验室基金资助项目(9140C0201010902)
关键词 窄带干扰 直扩系统 矩阵分解 narrow-band interference direct sequence spread spectrum(DSSS) matrix decomposition
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  • 1杨坚,奚宏生,吴春旭,赵宇.基于自调整器的CDMA系统盲自适应干扰抑制[J].电子学报,2004,32(10):1617-1620. 被引量:4
  • 2李琳,周文辉,谭述森.扩频系统中最小误码率意义下的最优干扰抑制技术[J].电子学报,2005,33(1):32-37. 被引量:7
  • 3黄高勇,张家树.一种抑制直扩通信窄带干扰的新型非线性自适应预测滤波器[J].电子与信息学报,2007,29(6):1328-1331. 被引量:17
  • 4MILSTEIN L B. Interference rejection techniques in spread spectrum communication [ J ]. Proc IEEE, 1988,76 (6) : 657 - 671.
  • 5POOR H V, RUSCH L A. Narrowband interference suppression in spread spectrum CDMA [ J ]. IEEE, Pers Commun. 1994, 1 (3) : 14 - 27.
  • 6WANGXiao-dong,POORHV.无线通信系统-信号接收与处理的高级技术[M].郑宝玉,等,译.北京:电子工业出版社,2005.289-334.
  • 7WANG Y C, MILSTEIN L B. Rejection of multiple narrowband interference in both BPSK and QPSK DS spread-spectrum systems[J]. IEEE, Trans Commun, 1988,36(2) : 195 - 204.
  • 8ILTIS R A, MISTEIN L B. Performance analysis of narrowband interference rejection techniques in DS spread-spectrum systems[J]. IEEE Trans Commun, 1984,32( 11 ) : 1169 - 1177.
  • 9MASRY E. Closed-form analytical results for the rejection of narrow-band interference in PN spread-spectrum systems-Part Ⅱ:Linear interpolation filters[ J]. IEEE Trans Commun, 1985, 33(1) :10- 19.
  • 10KOZMINCHUK B W, SHEIKH A U H. Kalman filter-based architecture for interference excision[ J]. IEEE Trans Commun, 1995,43(2) :574- 580.

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