# Frequent question: How is TB LTE size calculated?

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## How is LTE code rate calculated?

The calculation of LTE code rate is done based on MCS, PRBs and OFDM symbols per slot. The LTE code rate calculator outputs code rate. It takes into account percent of REs used in control channel operation. The PRBs stands for Physical Resource Blocks allocated to the UE by eNB.

## How are code rates calculated?

The code rate is R = k/n. The Hamming distance d between two codewords is the number of positions by which they differ. For example, the codewords 110101 and 111001 have a distance of d = 2. If valid codewords are always at least a distance d = 2 apart, then it is always possible to detect a single error.

## What is code rate in 5G?

5G NR supports QPSK, 16 QAM, 64 QAM and 256 QAM modulation . With QPSK there are 2 bits can be transmitted per RE, with 16QAM it can be 4 bits, with 64QAM it can be 6 bits and with 256QAM it can 8 bits. … Code rate can be defined as the ratio between useful bit and total transmitted bit (Useful + Redundant Bits).

## How can I improve my DL throughput in LTE?

The easiest way is to give a higher priority to L1800 and that will shift most of the UEs in L1800 coverage away from L800. This will ensure better CQI for users and thus a better throughput. Another way would be to keep them on same priority and provide a frequency offset to move the users to L1800.

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## What is rank indicator in LTE?

Rank Indication is one of the important input to eNB , in selection of the transmission layer in downlink data transmission. If UE report Rank Indication 2 , eNB will start sending the downlink data in MIMO mode (Transmission Mode 3). …