Abstract: An angle of arrival system is configured to efficiently measure phase differences. The angle of arrival system includes a master receiver for demodulating the signal received at one antenna and for implementing a tracking loop to identify the timing of symbols within the signal. This timing information can be fed back as a synchronization signal to a despreader in the master receiver and to a despreader in each of a number of slave receivers to synchronize the timing at which each signal is despread. Because despreading is synchronized, the outputs of the despreaders can be used to directly calculate phase differences between each pair of signals. In this way, the slave receivers do not need to implement a demodulator or a tracking loop. When the received signal is a non-spread signal, the phase differences between each pair of signals can be calculated directly from the modulated samples of each pair of signals without despreading.

Abstract: An angle of arrival system is configured to efficiently measure phase differences. The angle of arrival system includes a master receiver for demodulating the signal received at one antenna and for implementing a tracking loop to identify the timing of symbols within the signal. This timing information can be fed back as a synchronization signal to a despreader in the master receiver and to a despreader in each of a number of slave receivers to synchronize the timing at which each signal is despread. Because despreading is synchronized, the outputs of the despreaders can be used to directly calculate phase differences between each pair of signals. In this way, the slave receivers do not need to implement a demodulator or a tracking loop. When the received signal is a non-spread signal, the phase differences between each pair of signals can be calculated directly from the modulated samples of each pair of signals without despreading.

Abstract: 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.

Abstract: 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.