5G NR Downlink HARQ Codebook
5G Downlink HARQ Codebook In 5G NR, 3GPP specification has defined HARQ Codebook to provide the feedback to base station...
Category: 5G Physical Layer
PDSCH mapping – type A and type B
Introduction PDSCH is Physical Downlink Shared Channel used for User data transfer in 5G. PDSCH is transmitted with DMRS signals....
5G SLIV – Start and Length Indicator Value
Introduction In 5G NR, SLIV means Start and Length Indicator Value. It is used for Time domain resource allocation for...
Spectral Efficiency | Bits/Second/Hz | 5G-4G
Spectral Efficiency What do you think of when you hear word “spectral efficiency?” The answer will come, it has to...
Wireless Channel Estimation Using Deep Learning: A Comparison with Least Squares Method
Introduction In a wireless communication system, transmitted signals experience distortion and attenuation as they propagate through the environment. This effect is usually modelled as a linear time-invariant system...
5G NR RSRQ Measurements and Its Mapping
The RSRQ (Referece Signal RecivedQuality) is a measurement performed by the UE to know the Quality of recieved Reference Signals....
5G NR-PDCCH Channel Overview and Processing
5G PDCCH Channel Overview The physical downlink control channel (PDCCH) in NR carries Downlink Control Information (DCI). In this post...
5G NR SS-RSRP Value Measurement Mapping
UE does measurement of SS-RSRP and use it for cell selection, cell reselection, power control, mobility procedures and beam management...
3GPP Evolution for MIMO
Released 3GPP standards on MIMO are shown in below image. As you know, Coordinated Multipoint (CoMP) is a type of Cooperative...
5G NR RA-RNTI Calculation
A 5G UE picks a random preamble for RACH procedure to get the uplink synchronisation. The preamble is referenced with...