Multirate DSP

As per the request from one viewer................

Multi-rate processing and sample rate conversion, or interpolation and decimation as they re known, are a clever digital signal processing (DSP) techniques that broadband and wireless design engineers can employ during the system design process. Using these techniques, design engineers can gain an added degree of freedom that could improve the overall performance of a system architecture.

Multi-rate processing finds use in signal processing systems where various sub-systems with differing sample or clock rates need to be interfaced together. At other times multi-rate processing is used to reduce computational overhead of a system. For example, an algorithm requires k operations to be completed per cycle. By reducing the sample rate of a signal or system by a factor of M, the arithmetic bandwidth requirements are reduced from kfs operations to kfs/M operations per second.

The above applications provide a glimpse of just a few of the communication applications where using multi-rate processing and sample-rate conversion makes sense. But to implement these techniques, designers must first better understand how they work.

For more details pls go through the link
http://www.commsdesign.com/showArticle.jhtml?articleID=16504259


pdf

www2.ee.ic.ac.uk/hp/staff/pnaylor/notes/DSP5.pdf
www.spsc.tugraz.at/courses/dsplab/multirate/multirate.pdf
eceweb.uccs.edu/wickert/ece5650/notes/sampling_theory/multirate_sim.pdf

ppt

vada.skku.ac.kr/ClassInfo/system_level_design/sdr_slides/Multirate-1.ppt
vada.skku.ac.kr/ClassInfo/system_level_design/sdr_slides/Multirate-2.ppt -