Multi-transmitter communication system employing anti-phase...

Details Multi-transmitter communication system employing anti-phase... Multi-transmitter communication system employing anti-phase...

2006-09-19

2006-09-19

Urban, Edward F. (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

With wave collector

C330S151000, C455S103000, C455S105000, C455S116000

Reexamination Certificate

active

07110739

ABSTRACT:
Base station transmitter signals are combined more effectively through the use of anti-phase pilots between pairs of transmission paths. At the combiner, the pilots will cancel when the amplitude, phase, and delay of the two transmission paths entering the combiner are matched. As a result, the pilots will not appear at the output except when the alignment is incorrect. By detecting the residual pilot at the combiner output, the information is used to adjust the alignment of one of the transmission paths to match the other. The adjustments to the amplitude, phase, and delay are performed on the input signal, after the pilot injection.

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