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Broadcast Electronics VPE

Broadcast Electronics VPE

Aug 2, 2010 12:00 PM, By Erin Shipps, associate editor

Vector Power Enhancement

As a way to improve transmitter efficiency and provide increased output for elevated HD Radio sideband power levels, VPE technology combines a crest factor reduction scheme and real-time distortion pre-correction to yield up to a 7 percent transmitter efficiency and 30 percent output power. This allows BE FMi tube and solid-state transmitters for HD Radio to achieve optimum linear performance, thereby reducing hardware cost, heat loss and overall cost of HD Radio adoption at higher -14dBc or -10dBc injection levels. VPE uses a proprietary crest factor reduction scheme to reduce the peak-to-average ratio, thereby increasing transmitter performance. It also uses digital adaptive pre-distortion circuitry to pre-correct non-linear distortion in the RF transmission signal path.
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