Design of Wideband CIC Compensator Based on Particle Swarm Optimization

Design of Wideband CIC Compensator Based on Particle Swarm Optimization
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基于粒子群优化的宽带CIC补偿器设计

DOI:
10.1007/s00034-018-0947-9
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发表时间:
2018-09
期刊:
Circuits, Systems, and Signal Processing
影响因子:
--
通讯作者:
Tian Hongxian
Tian Hongxian
中科院分区:
其他
文献类型:
--
作者:
Xu Linsen;Yang Wei;Tian Hongxian

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针对级联积分梳状(CIC)滤波器通带压降大的问题,提出了一种改进的整数规划法设计CIC补偿器。通过从2的幂和表示中分离出最小分数部分,建立了CIC补偿器系数集合与整数集合之间的一一对应关系,从而可以用整数变量优化CIC补偿器系数。采用粒子群优化算法避免了分支定界算法中的截断误差。仿真结果表明,采用该方法补偿的CIC滤波器可获得小于0.03 dB的绝对通带偏差。
Aiming at the high passband drop in cascaded integrator comb (CIC) filters, this paper proposes an improved integer programming for the design of CIC compensator. By separating minimum fraction part from the representation of the sum of powers of two, a one-to-one correspondence is established between the set of coefficients of CIC compensator and an integer set, so that coefficients of CIC compensator can be optimized by integer variable. Particle swarm optimization is applied to avoid truncation error in branch and bound algorithm. Simulation results indicate that the compensated CIC filter by the proposed method can achieve absolute passband deviation less than 0.03 dB.
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