fix noise power calculation and downlink CQI reporting

openair1/PHY/LTE_ESTIMATION/lte_ue_measurements.c

openair1/PHY/LTE_TRANSPORT/dci_tools.c

openair1/PHY/LTE_TRANSPORT/initial_sync.c

openair1/PHY/LTE_TRANSPORT/proto.h

openair1/PHY/LTE_TRANSPORT/sss.c

openair1/PHY/LTE_TRANSPORT/uci_tools.c

openair1/PHY/LTE_TRANSPORT/ulsch_coding.c

openair1/SCHED/phy_procedures_lte_ue.c

openair2/UTIL/LOG/vcd_signal_dumper.c

openair2/UTIL/LOG/vcd_signal_dumper.h