Survey on Design of CIC Decimator and Interpolator in Wireless Receivers

Approved

Relevance and Originality

The Research Article highlights the growing importance of multi-rate signal processing in wireless communications, emphasizing its role in boosting efficiency, flexibility, and performance. By centering on Cascaded Integrator-Comb (CIC) filters, it underlines their practical relevance for decimation and interpolation in high-speed systems. The originality lies in connecting CIC’s multiplier-less architecture with the needs of next-generation wireless technologies while also considering hardware resource evaluation, which adds a fresh perspective to an established area.

Methodology

The work explains CIC filters’ architecture and their role in adapting wireless receivers to different sampling rates in a clear manner. The conceptual framework is strong, yet the methodology would be more complete with detailed simulation procedures, hardware testing strategies, and explicit comparisons against other multi-rate filter designs. Including a systematic process for assessing hardware resource usage would further improve the study’s depth.

Validity & Reliability

The conclusions align well with the known strengths of CIC filters, reinforcing their efficiency in digital communication systems. However, the absence of quantitative experimental data or performance benchmarking weakens the reliability of the findings. Broader validation across diverse scenarios, supported by numerical results, would make the conclusions more robust and ensure their generalizability.

Clarity and Structure

The Research Article is structured logically, beginning with the motivation for multi-rate processing, then moving to CIC design principles, applications, and resource considerations. The explanations are straightforward and accessible, though some repetition could be reduced for sharper readability. The addition of illustrative diagrams or tabulated results would enhance clarity and better convey technical points.

Result Analysis

The analysis underlines CIC filters’ efficiency, adaptability, and hardware-friendly nature, positioning them as suitable for next-generation wireless receivers. Nonetheless, the lack of comparative numerical evaluation limits the depth of interpretation and the strength of performance-based conclusions.