Abstract: The disclosed systems and methods are directed to wireless receiver systems for neutralizing the effects of received RF blocking signals. The configurations presented herein operate to receive RF signals containing a desired signal and a blocking signal, a first module, in communication with the receive RF signals along a first signal path and configured to extract a specimen of the received desired and blocking signals, and a second module, in communication with the first module along a second signal path to receive the desired signal and blocking signal specimens. The second module is configured to produce a replica of the blocking signal based on the blocking signal specimen, generate an anti-blocking signal based on the blocking signal replica, and introduce the anti-blocking signal to the received desired and blocking signals in which the anti-blocking signal destructively interferes to neutralize the received blocking signal.

Abstract: The disclosed systems and methods are directed to wireless receiver systems for neutralizing the effects of received RF blocking signals. The configurations presented herein operate to receive RF signals containing a desired signal and a blocking signal, a first module, in communication with the receive RF signals along a first signal path and configured to extract a specimen of the received desired and blocking signals, and a second module, in communication with the first module along a second signal path to receive the desired signal and blocking signal specimens. The second module is configured to produce a replica of the blocking signal based on the blocking signal specimen, generate an anti-blocking signal based on the blocking signal replica, and introduce the anti-blocking signal to the received desired and blocking signals in which the anti-blocking signal destructively interferes to neutralize the received blocking signal.

Abstract: Methods and apparatuses for performing synchronization in a receiver of an analog code division spreading system are described. The method includes outputting a sampling point alignment signal to apply first time delays to align encoder code signals with a sampling point of an ADC The ADC is used to obtain digital samples of the orthogonal code-encoded analog signal at the sampling point. The method also includes outputting a decoder code alignment signal to apply second time delays to align decoder code signals with the digital samples. The method also includes outputting an orthogonal code alignment signal to apply third time delays to the decoder code signals and the encoder code signals, to maintain mutual orthogonality among the decoder code signals and to maintain mutual orthogonality among the encoder code signals.