System and method for enhancing modem performance using digital signal processing techniques

In a communication system having a transmitter and a receiver, a method of determining if a data packet is to be filtered at the receiver, comprising:

• providing a reference frame training sequence to the receiver;
• transmitting a frame training sequence and the data packet from the transmitter to the receiver;
• and
• comparing the frame training sequence to the reference frame training sequence to determine if the data packet is to be filtered.

A computer program product for filtering a data packet at the receiver, comprising:

• code for transmitting a frame training sequence and a data packet from the transmitter to the receiver;
• code for providing an error signal to the receiver that is produced by the receiver based on the frame training sequence;
• code for comparing the error signal to a threshold value to determine if the data packet is to be filtered;
• and
• a computer readable medium for storing the computer codes.

In a communication system having a transmitter and a receiver, a method of determining if a data packet is to be filtered at the receiver, comprising:

• transmitting a first packet and the data packet from the transmitter to the receiver;
• producing an error signal at the receiver based on the first packet;
• calculating an average error signal based on the error signal;
• and
• comparing the average error signal to a threshold value to determine if the data packet is to be filtered.

A computer program product for determining if a data packet is to be filtered at the receiver, comprising:

• code for transmitting a frame training sequence and the data packet from the transmitter to the receiver;
• code for producing an error signal at the receiver based on the frame training sequence;
• code for calculating an average error signal based on the error signal;
• code for comparing the average error signal to a threshold value to determine if the data packet is to be filtered;
• and
• a computer readable medium for storing the computer codes.

A computer system for filtering a data packet, comprising:

• a transmitter configured to transmit a frame training sequence and the data packet;
• and
• a receiver configured to receive the frame training sequence and the data packet transmitted by the transmitter, the receiver comprising:
• an error signal generator configured to generate an error signal based on the frame training sequence;
• an averaging module configured to generate an average error signal based on the error signal, the averaging module further configured to compare the average error signal to a threshold value;
• and
• a filter module configured to filter the data packet based on the comparison performed by the averaging module.