Shu Wang

3 Questions 14 Answers 0 Followers

Questions related from Shu Wang

Is there any analytic result on the impact of Doppler onto CDMA signals without Doppler tracking and compensation?

In most modern CDMA, OFDM communication systems, there are means of helping their receivers to track and compensate Doppler effects, such as AGC resetting, etc. My question is, what would happen...

02 September 2016 4,152 3 View

Besides the initial authentication during UE registration, how often does a LTE network request a re-authentication on the registered UE?

Let's only consider a LTE network and there is no inter-RAT handover. I understand that a UE shall perform a initial authentication request by its serving MME during its registration. My...

13 March 2015 9,386 3 View

How can a LTE UE obtain the accurate local or UTC time/date (e.g., in the accuracy of milli-seconds or better ) from the LTE network?

Is it possible for a LTE UE to obtain the accurate local or UTC time/date from the L1/L2/L3 of LTE network? I am sure that a LTE UE can obtain the local or UTC time/date from either MME or L4...

14 November 2014 3,188 5 View