Analog nyquist shaping of a low pass filtered transmission system

A device for equalizing a low pass filter to create a Nyquist filter response for analog signals in a data transmission system which comprises:

• a low pass filter for passing a predetermined bandwidth of an input analog signal;
• a tapped delay filter connected with the low pass filter to create the Nyquist filter for sampling the input analog signal, wherein the input analog signal has a predetermined symbol rate, wherein the symbol rate is based on a symbol cycle, and wherein samples from the input analog signal are passed through an N number of taps and an n number of samples are taken during each symbol cycle and wherein each sample is respectively weighted with a dedicated amplitude to establish a system transfer function for equalizing the low pass filter to create a Nyquist filter, and further wherein both N and n are integers greater than one and N is equal to or greater than n to over-sample the analog signal to minimize both inter-symbol interference and transmission bandwidth;
• and
• a decision circuit, to convert the input analog signal into a desired data format for creation of an output signal to be transmitted by the data transmission system.

A method for assembling an analog signal processing device for equalizing a low pass filter to create a Nyquist filter response for analog signals in a data transmission system which comprises the steps of:

• providing a low pass filter for passing a predetermined bandwidth of an input analog signal;
• connecting a tapped delay filter to the low pass filter to create the Nyquist filter for sampling the input analog signal, wherein the input analog signal has a predetermined symbol rate, wherein the symbol rate is based on a symbol cycle, and wherein samples from the input analog signal are passed through an N number of taps and an n number of samples are taken during each symbol cycle;
• and
• weighting each sample with a dedicated amplitude to establish a system transfer function for equalizing the low pass filter to create a Nyquist filter, and further wherein both N and n are integers greater than one and N is equal to or greater than n to over-sample the analog signal to minimize both inter-symbol interference and transmission bandwidth.