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ACM, Cross Polarisation Interference Cancellation (XPIC) and Ethernet link
XPIC technologies double transmission capacity by enabling a single antenna to simultaneously send and receive radio waves from two independent polarized waves of the same frequency by suppressing the interference between different polarized waves.
Instead of the carefully escalating farce of "Road Trip" (or of "National Lampoon's European Vacation," which remains the absurd high-water mark for this type of xpic), writer-director Jeff Schaffer and his co-writers Alec Berg and David Mandel fall back on a parade of broad, one-note potshots at various nationalities, most of which wouldn't pass muster at a comedy club amateur night.
In both categories of channel spacing, a doubling of the spectrum efficiency (that is, 2 x STM-1 per RF channel) by means of cross polar interference cancellation (XPIC) has been obtained.
High modulation is the key component in enabling high capacity and eventually delivering 10Gbps microwave transmission in combination with multiplexing techniques such as XPIC (Cross Polarization Interference Cancellation), RTA (Radio Traffic Aggregation) and MIMO (Multiple-Input and Multiple-Output).
The infringement action in Germany concerns three European patents covering fundamental DMR techniques such as multi-level quadrature amplitude modulation (M-QAM), synchronous digital hierarchy (SDH) radio and cross-polar interference cancellation (XPIC).
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