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Low-Complexity Digital Channelizer Design for Software Defined Radio

Jinguang HAO, Gang WANG, Honggang WANG, Lili WANG, Xuefeng LIU

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Summary :

In software defined radio systems, a channelizer plays an important role in extracting the desired signals from a wideband signal. Compared to the conventional methods, the proposed scheme provides a solution to design a digital channelizer extracting the multiple subband signals at different center frequencies with low complexity. To do this, this paper formulates the problem as an optimization problem, which minimizes the required multiplications number subject to the constraints of the ripple in the passbands and the stopbands for single channel and combined multiple channels. In addition, a solution to solve the optimization problem is also presented and the corresponding structure is demonstrated. Simulation results show that the proposed scheme requires smaller number of the multiplications than other conventional methods. Moreover, unlike other methods, this structure can process signals with different bandwidths at different center frequencies simultaneously only by changing the status of the corresponding multiplexers without hardware reimplementation.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E107-A No.1 pp.134-140
Publication Date
2024/01/01
Publicized
2023/07/19
Online ISSN
1745-1337
DOI
10.1587/transfun.2022EAP1166
Type of Manuscript
PAPER
Category
Communication Theory and Signals

Authors

Jinguang HAO
  Ludong University
Gang WANG
  Ludong University
Honggang WANG
  Ludong University
Lili WANG
  Ludong University
Xuefeng LIU
  Ludong University

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