Title :
A fast implementation of correlation of long data sequences for coherent receivers
Author :
Bhattacharya, C. ; Patel, Gopal
Author_Institution :
Defense Res. & Dev. Organ. Lab., DEAL, Dehradun, India
fDate :
6/1/2002 12:00:00 AM
Abstract :
Coherent reception depends upon matching of phase between the transmitted and received signal. Fast convolution techniques based on fast Fourier transform (FFT) are widely used for extracting time delay information from such matching. The latency in processing a large data window of the received signal is a serious overhead for mission critical real time applications. The implementation of a parallel algorithm for correlation of long data sequences in multiprocessor environment is demonstrated here. The algorithm does processing while acquiring the received signal and reduces the computation overhead considerably because of inherent parallelism.
Keywords :
convolution; correlation methods; fast Fourier transforms; parallel algorithms; real-time systems; signal detection; coherent receivers; computation; correlation; fast Fourier transform; latency; long data sequences; mission critical real time applications; multiprocessor environment; parallel algorithm; received signal; time delay information; transmitted signal; Chirp; Convolution; Correlators; Delay; Frequency; Matched filters; Parallel algorithms; Radar; Signal processing; Signal processing algorithms;
Journal_Title :
Circuits and Systems II: Analog and Digital Signal Processing, IEEE Transactions on
DOI :
10.1109/TCSII.2002.803470