Abstract: A radio frequency (RF) communications system may include a first RF node that transmits data, including a new frequency of operation, and a sequence of pilot symbols spread with a complex spreading code sequence. A second RF node may receive an incoming signal from the first RF node and perform despreading for N sample offset delays to generate N despreading sequences for the sequence of pilot symbols. The second RF node may perform a cross-correlation to select a desired despreading sequence from the N despreading sequences, determine a phase offset and timing offset, process the incoming signal based upon the desired despreading sequence, phase offset and timing offset, and switch to the new frequency of operation.

Abstract: A radio frequency (RF) communications system may include a first RF node that transmits data, including a new frequency of operation, and a sequence of pilot symbols spread with a complex spreading code sequence. A second RF node may receive an incoming signal from the first RF node and perform despreading for N sample offset delays to generate N despreading sequences for the sequence of pilot symbols. The second RF node may perform a cross-correlation to select a desired despreading sequence from the N despreading sequences, determine a phase offset and timing offset, process the incoming signal based upon the desired despreading sequence, phase offset and timing offset, and switch to the new frequency of operation.

Abstract: A radio frequency (RF) communications system may include a first RF node that transmits data, including a new frequency of operation, and a sequence of pilot symbols spread with a complex spreading code sequence. A second RF node may receive an incoming signal from the first RF node and perform despreading for N sample offset delays to generate N despreading sequences for the sequence of pilot symbols. The second RF node may perform a cross-correlation to select a desired despreading sequence from the N despreading sequences, determine a phase offset and timing offset, process the incoming signal based upon the desired despreading sequence, phase offset and timing offset, and switch to the new frequency of operation.

Abstract: A radio frequency (RF) communications system may include a first RF node that transmits redundant data channels on different RF frequencies and transmits a control channel for synchronization lock with at least one other RF node. A second RF node may receive the redundant data channels on the different RF frequencies that are subject to RF disruption so that a disrupted redundant data channel loses synchronization lock. The second RF node may reacquire synchronization lock for the disrupted redundant data channel based upon data within another redundant data channel and in a shorter time than reacquiring synchronization lock using the control channel.

Abstract: A radio frequency (RF) communications system may include a first RF node that transmits redundant data channels on different RF spatial paths and transmits a control channel for synchronization lock with at least one other RF node. A second RF node may receive the redundant data channels on the plurality of respective different RF spatial paths that are subject to RF disruption so that a disrupted redundant data channel loses synchronization lock. The second node may reacquire synchronization lock for the disrupted redundant data channel based upon data within another redundant data channel and in a shorter time than reacquiring synchronization lock using the control channel.