What is codebook based transmission

1. What is a codebook based transmission?
2. What is a codebook 5G?
3. What is codebook in LTE?
4. What is codebook based precoding?
5. What is PMI beam in 5G?

What is a codebook based transmission?

Codebook based precoding is a promising new technique of beamforming. Precoding means multiple data streams or a single data stream are transmitted from the transmit antennas with independent and appropriate weightings that will lead to maximize the throughput at the receiver side.

What is a codebook 5G?

Putting it other way, Codebook is a kind of matrix (a matrix having complex value elements) that transform the data bit (PDSCH) to another set of data that maps to each antenna port. Two types of Codebook : Type I and Type II. There are two types of Codebook defined in 5G.

What is codebook in LTE?

The codebook based precoding is a promising technology adopted by Long Term Evolution (LTE), which fixes a common codebook comprising a set of vectors and matrices at both the transmitter and the receiver.

What is codebook based precoding?

Codebook-based precoding allows the system to dispense with full channel state information at the transmitter (CSIT). This considerably reduces the feedback overhead. Phase-only codebooks with systematic structure are investigated since they avoid increasing the peak to average power ratio of the transmitted signal.

What is PMI beam in 5G?

PMI stands for Pre-coding Matrix Indicator. And RI is Rank Indicator. These three values are computed on the fly in LTE/5G NR systems and used to try to optimize resource allocation among the various user end devices (UEs) that are requesting service.