Interference channel equalizer

摘要

An interference channel equalizer for receiving and processing at least two distinct RF data signals transmitted over the same frequency to a single receiving station that has at least one receiver for each distinct transmitted RF data signal. Each receiver processes an RF data signal received by its antenna and outputs an output data signal which corresponds to one of the distinct transmitted RF data signals. Each receiver includes an antenna configured to receive an RF data signal, a demodulator, a delay block to selectively delay the received RF data signal, an interference cancellation feed forward filter that uses the received signal from another receiver to remove co-channel due to another distinct RF transmitted data signal from the signal being processed, and a decision feedback equalizer to mitigate both intersymbol and multi-path interference from the received signal being processed.

主权项

1. An interference channel equalizer for receiving and processing a plurality of radio frequency (“RF”) data signals transmitted over the same frequency comprising:
a single terminal having a plurality of antennas for receiving a plurality of RF data signals and a plurality of receivers, each receiver in electronic communication with at least one antenna and in electronic communication with at least one other of the plurality of receivers; at least a first receiver for receiving and processing a first RF data signal and a second receiver for receiving and processing a second RF data signal, said first receiver being in electronic communication with at least said second receiver, and said second receiver being in electronic communication with at least said first receiver; said first receiver comprising a first adaptive interference cancellation filter for receiving and filtering at least said second RF data signal from said second RF receiver, wherein the filtered at least said second RF data signal is combined with said first RF data signal to cancel co-channel interference due to at least said second RF data signal from said first RF data signal and thereby create a first combined RF data signal; said second receiver comprising a second adaptive interference cancellation filter for receiving and filtering at least said first RF data signal from said first RF receiver, wherein the filtered at least said first RF data signal is combined with said second RF data signal to cancel co-channel interference due to at least said first RF data signal from said second RF data signal and thereby create a second combined RF data signal; said first receiver further comprising a first adaptive decision feedback equalizer downstream of said first adaptive interference cancellation filter for cancelling one of intersymbol and multipath interference in said first combined RF data signal; and said second receiver further comprising a second adaptive decision feedback equalizer downstream of said second adaptive interference cancellation filter for cancelling one of intersymbol and multipath interference in said second combined RF data signal.