Modified Direct Insertion/Cancellation Method Based Sample Rate Conversion for Software Defined Radio

Anas Muhamad BOSTAMAM
Yukitoshi SANADA

IEICE TRANSACTIONS on Communications   Vol.E91-B    No.8    pp.2648-2656
Publication Date: 2008/08/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e91-b.8.2648
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Wireless Communication Technologies
fractional SRC,  SDR,  cognitive radio,  direct insertion/cancellation,  RF sampling receiver,  resampling,  

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In this paper, a new fractional sample rate conversion (SRC) scheme based on a direct insertion/cancellation scheme is proposed. This scheme is suitable for signals that are sampled at a high sample rate and converted to a lower sample rate. The direct insertion/cancellation scheme may achieve low-complexity and lower power consumption as compared to the other SRC techniques. However, the direct insertion/cancellation technique suffers from large aliasing and distortion. The aliasing from an adjacent channel interferes the desired signal and degrades the performance. Therefore, a modified direct insertion/cancellation scheme is proposed in order to realize high performance resampling.