A fast and energy efficient binary-to-pseudo CSD converter

He, Yajuan; Zhang, Ziji; Ma, Baosong; Li, Jinpeng; Zhen, Shaowei; Luo, Ping; Li, Qiang

doi:10.1109/iscas.2015.7168764

Cited by 2 publications

(1 citation statement)

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“…The CSD coding expresses the filter coefficients as the sum or difference of the power of 2, which is realized by shift operation and adder. The optimal CSD coding can also reduce the adder number and the maximum encoding lord length [27].…”

Section: Csd Codingmentioning

confidence: 99%

Cascaded multiplier-free implementation of adaptive anti-jamming filter based on GNSS receiver

Song,

Chen,

et al. 2024

Front. Phys.

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Evaluating the computational complexity is critical for assessing the time-domain anti-jamming performance of GNSS receivers. The multiplier is the core component that contributes to the computational complexity in time-domain anti-jamming. However, current algorithms aimed at reducing the complexity of time-domain anti-jamming typically concentrate on shortening the filter length, which fails to address the high computational complexity introduced by the use of multipliers. This paper introduces a cascaded multiplier-free approach for implementing time-domain anti-jamming in navigation receivers. We propose a numerical power decomposition technique based on optimal Canonical Signed Digit coding and coefficient decomposition. By substituting the multiplier with minimal adder and shift operations, the computational complexity of the anti-jamming filter with a high quantization bit-width can be considerably decreased. An optimization strategy is presented, and the low-complexity multiplier-free technique is applied to the time-domain anti-jamming filter. Compared to the traditional Canonical Signed Digit multiplier-free technique, our method can reduce the components required for a 12-bit quantization anti-interference filter by one adder, 20 shift operations, and five coded word lengths, while maintaining a pseudo-range measurement deviation below 0.27 ns.

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Section: Csd Codingmentioning

confidence: 99%