CQI Improvement PDCCH CQI Shift for 4Tx [TDD Nokia ]

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It was discovered that 4Tx Transmit Diversity results in up to 1 dB performance penalty compared to 2Tx Transmit Diversity. Therefore, an offset for mentioned algorithm is needed to allow a slightly more conservative choice of aggregation level with 4Tx and that offset is pdcchCqiShift4Tx 

Trail Result for pdcchCqiShift4Tx =-1.5 for Nokia 



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