6 FAQs about Current imbalance in communication base stations

Does power imbalance affect BER performance?

The results demonstrate that power imbalance considerably affects BER performance and applying long-term amplitude information with fast phase feedback has insignificant benefit to effectively compensate the detrimental effect of large channel power imbalance when base stations use a single antenna.

Does channel power imbalance affect Ber?

The impact of channel power imbalance on the BER of the studied schemes is shown in Figs. 3 and 4 where average BER results are presented as a function of power imbalance assuming bar {gamma }_ {1}=10 dB and bar {gamma }_ {1}=15 dB, respectively.

Does channel power imbalance affect performance gain of Comp methods?

Besides the analytical results, numerical analysis is made to thoroughly capture the performance impact of channel power imbalance on the performance gain of the CoMP methods.

What causes channel power imbalance in co-located multi-antenna systems?

Channel power imbalance also occurs among antenna branches in the conventional co-located multi-antenna systems due to imperfect antenna calibration. For example, in third-generation BS, the difference between reference signals from two different antenna connectors must be within ±2 dB [ 15 ].

Does three-phase unbalanced load adjusting device affect current imbalance compensation?

The results show that the method can effectively evaluate the current imbalance compensation effect of the three-phase unbalanced load adjusting device, and is of guiding significance for standard revision and similar testing. Three-phase load imbalance in low-voltage distribution network is inevitable and exists for a long time.

What happens if a reradiated signal is near a base station?

The reradiated signals are usually very low in amplitude. However, if the radiating element (rusty fence, barn, or downpipe) is close to the receiver of a base station and if its intermodulation product falls within the receive band, the result will be receiver desensitization. Figure 7. Beyond the antenna, or rusty bolt PIM.

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