whereis the power consumed considering the processing (RF and Baseband) requirements of the solution. When considering the losses due to the supply and conversion of electricity to the system, the total power can be determined as (3.19), where DC-DC conversion loss and power supply loss are given as proportional to the respective sub-systems they feed as per Figure 3.14. (3.20) Table 3.7 Parameters Used Parameter Description Number of power amplifiers Transmit Power for single SISO scheme (W) PA efficiency RF transceiver power single radio (W) – Power supply loss (%) (including DC-DC loss) Signal processing power single radio (W) – Transmit power reduction due to antenna scheme DC-DC loss conversion loss (%) Power supply loss (%) Total power for antenna power reduction scheme (W) For the case where additional antennas are used for transmit power reductions in the active state, the level of reduction should be included in the analysis i.e. the system is not concerned with spectral efficiency (SE) or capacity but it is used to maintain a quality of service with a lower overall power than would be possible with a single antenna. This shows the relationship between power reduction and number of antennas for any given number of antennas. It is assumed that the baseband signal processing requirements are low and would have minimal effect on consumed power. The main power would be attributed to the additional RF transceivers and PAs. However, this is confined to this particular implementation of W-CDMA. LTE and Transmit Diversity
whereis the power consumed considering the processing (RF and Baseband) requirements of the solution. When considering the losses due to the supply and conversion of electricity to the system, the total power can be determined as (3.19), where DC-DC conversion loss and power supply loss are given as proportional to the respective sub-systems they feed as per Figure 3.14. (3.20) Table 3.7 Parameters Used Parameter Description Number of power amplifiers Transmit Power for single SISO scheme (W) PA efficiency RF transceiver power – single radio (W) Power supply loss (%) (including DC-DC loss) Signal processing power – single radio (W) Transmit power reduction due to antenna scheme DC-DC loss conversion loss (%) Power supply loss (%) Total power for antenna power reduction scheme (W) For the case where additional antennas are used for transmit power reductions in the active state, the level of reduction should be included in the analysis i.e. the system is not concerned with spectral efficiency (SE) or capacity but it is used to maintain a quality of service with a lower overall power than would be possible with a single antenna. This shows the relationship between power reduction and number of antennas for any given number of antennas. It is assumed that the baseband signal processing requirements are low and would have minimal effect on consumed power. The main power would be attributed to the additional RF transceivers and PAs. However, this is confined to this particular implementation of W-CDMA. LTE and Transmit Diversity
PhDThesisWithCorrections.docx