What parameters impact the EVM of transmitter chain ?

The error vector magnitude or EVM is a measure used to quantify the performance of a digital radio transmitter or receiver. A signal sent by an ideal transmitter or received by a receiver would have all constellation […]

Robust Header Compression – ROHC

ROHC is a header compression protocol/algorithm that can be used compress the header of different IP packets. In normal case without compression  IPv4 header is 40 bytes and IPv6 header […]

TTI Bundling for better HARQ and Latency

TTI bundling enables a data block to be transmitted in consecutive TTIs, which are packed together and treated as the same resource during the scheduling process. TTI bundling makes use […]

How to get better ACLR in TX chain ?

If you are trying to debug the bad ACLR in TX Chain or you are designing a TX for your system, then you must take care following points with regards […]

LTE Cell Camping and Selection Procedure

Cell Selection and Re-selection: After selecting a PLMN, a UE selects a cell in the PLMN to camp on. After camping on the cell, the UE monitors system information, performs […]

PLMN Selection in LTE (Idle Mode Action)

UEs can be either in RRC_CONNECTED or RRC_IDLE mode. UEs will be declared as RRC_IDLE if there is no RRC connection between the UEs and the eNodeB and RRC_Connected when […]

NR Resource Block Definition and RBs Calculation

Resource Block Definition One NR Resource Block (RB) contains 14 symbols in time domain and 12 sub-carriers in frequency domain similar to LTE. In LTE resource block bandwidth is fixed […]