Delay diversity in antenna arrays

Details Delay diversity in antenna arrays Delay diversity in antenna arrays

2011-06-28

2011-06-28

Trinh, Sonny (Department: 2618)

Telecommunications

Transmitter

Diversity

C455S562100, C455S063400

Reexamination Certificate

active

07970359

ABSTRACT:
In a wireless transmission system including a transmit delay module, delaying each of at least one copy of a signal by a respective delay, the signal being transmitted over a plurality of carrier frequencies and over at least one beam, the at least one beam exhibiting a beam pattern, the number of copies of the signal corresponding to the number of beams, each the at least one copy being associated with a respective one of the at least one beam, the system further including a beam pattern former, coupled with the transmit delay module, producing a plurality of transmit signals corresponding to the beam pattern, a frequency dependent beam shifter, coupled with the beam pattern former, delaying each of the at least one transmit signal by a respective angular shift delay, thereby applying an angular shift to each of the at least one beam, the angular shift of each of the at least one beam corresponding to at least a respective one of the carrier frequencies, wherein each beam is transmitted with a delay corresponding to the transmit delay of each the copy.

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