International Journal of Media and Networks(IJMN)

Consultant Mathematician (Retired), Dorset, UK

Publications

• Research Article   
  Design of Intelligent Channelizer for Extracting Signals of Arbitrary Centre Frequency and Bandwidth
  Author(s): Keith John Jones*
  
  There are two standard approaches to the problem of wideband signal channelization, namely those based upon the use of a digital down conversion (DDC) unit and those based upon the use of a polyphase discrete Fourier transform (DFT) or PDFT. There are clear advantages and disadvantages with both approaches, however, in that: a) with the DDC approach, optimal performance and flexibility is obtained but at the expense of a heavy computational load; whereas b) with the PDFT approach, a sub optimal and less flexible performance is obtained but at a greatly reduced computational cost through the exploitation of a suitably defined fast Fourier transform (FFT). An intelligent channelizer is described herein which possesses a flexible design able to exploit the merits of both approaches for the case where the input data comprises real-valued samples. The two key design features are: a) optima.. Read More»
  

  Abstract HTML PDF