Why is Logical root sequence number in Root Zadoff-Chu needed?

Started by guyholtzman 3 years ago7 replieslatest reply 3 years ago1019 views
Hi,I have been investigating RACH preamble planning and the properties of Root Zadoff-Chu sequences as used in 3GPP #LTE .From Wikipedia, Zadoff-Chu sequences have...

LTE Uplink transmit

Started by Sharan123 5 years ago4 replieslatest reply 5 years ago133 views
We know that in #LTE downlink transmit uses #OFDM but in case of uplink transmit, OFDM scheme is not used. Can someone explain the reason behind this?

Sampling frequency in Baseband

Started by Sharan123 6 years ago15 replieslatest reply 5 years ago3046 views
I would like to know importance of sampling frequency in the baseband. I am using #LTE as an example.If we take a 20 MHz system, the sampling frequency is specified...

Source coding in WiFi or LTE

Started by Sharan123 5 years ago7 replieslatest reply 5 years ago833 views
Hi,I am interested to know what source coding method is used in case of #WiFi or #LTE. I assume Turbo coding or LDPC are used for channel coding.Thanks,

LTE concept of TTI

Started by Sharan123 5 years ago1679 views
Hello All,The concept of TTI in #LTE has always confused me. I am giving a brief understanding from a base station perspective.So, assuming BW is fixed (e.g. 20...

LTE power allocation

Started by Sharan123 5 years ago3 replieslatest reply 5 years ago342 views
Hello All,In case of #LTE, it is mentioned ( that control channels are made strong wrt to other channels. This...

LTE - concept of layer mapping

Started by Sharan123 6 years ago4 replieslatest reply 6 years ago7393 views
I am interested to conceptually understand the layer mapping stage in #LTE downlink processing.While all the literature clearly describe how the layer mapping is...

LTE Downlink TX understanding

Started by Sharan123 6 years ago9 replieslatest reply 6 years ago1732 views
Hello All,I would like to get some clarification wrt to the #LTE downlink process at the Basestation side.I am using a 20 MHz system to be specific in my questions.It...

Pass band in digital up conversion of LTE signals

Started by LabPe43 6 years ago6 replieslatest reply 6 years ago475 views
Hi,I am new to filters and DUC (digital up conversion). I was reading an article from xilinx regarding DUC.It was using a passband of 9.015 MHz in its first stage...

Registering will allow you to participate to the forums on ALL the related sites and give you access to all pdf downloads.

Sign up

I agree with the terms of use and privacy policy.

Try our occasional but popular newsletter. VERY easy to unsubscribe.
or Sign in