CSI feedback allows downlink transmission to be adaptively optimized based on the instantaneous DL channel, so that closed loop beamforming and adaptive link adaptation can be enabled to optimize the system performance. The DL reference signal used for CSI measurement is different in Rel-8 and Rel-10. In Rel-8, CSI measurement is based on CRS, which … Read more
MU-MIMO is widely considered a key technology for system capacity improvement in modern wireless networks. In contrast to SU-MIMO, where the spatial multiplexing gain is confined to a single user, MU-MIMO allows multiple users to be co-scheduled on the same time-frequency resources to exploit this gain among two or more UE units. This is particularly … Read more
Operator always needs to check LTE performance before commercial launch and after commercial launch and here I write how and which KPI to check.As This is general guide so it is change for different operator but it cover all KPI. There are two types of methods for KPIs’ measurement: Field Test and Statistic Collection. Different … Read more
Here I write another two step in LTE planning and why its require to know. Starting from MIMO and Beam Forming Implementation and Understanding of Current Transmission Backhaul Network Capability of operator MIMO and Beam Forming Implementation The number of antenna deployed per cell will have an immediate impact on the coverage and capacity offered … Read more