Category Archives for Uncategorized

How to keep the UE on 4G in Idle Mode even in presence of WCDMA or other Technology ?

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Even though LTE is considered to be the next global standard. It still does not cover the entire globe yet. Forget entire globe, it’s not even covered everywhere in US. In fact, US deployment of 4G LTE started initially with deployment in big cities such as Dallas, New York, Orlando etc.     Well it […]

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LTE Power Control (Case of Uplink Channel : PUSCH)

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In wireless communications, one of the main challenge is to adapt the transmitting signal to overcome the variations of the wireless channel. Wireless channel can have varying channel response under different conditions. For a signal to be transmitted successfully from the transmitter to the receiver, it should adapt to the variations of the wireless channel. […]

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TDD : Why a Guard Period only in DL-to-UL Switching ?

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One of my friend, Sripathi has been asking this question about Time Division Duplexing (TDD) for over a week. I thought to visualize the answer for him this time. What was his question ? In TDD, why special sub-frame is used for switching Downlink (DL) to Uplink (UL) . Why not for UL to DL […]

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Faster Horses or Automobiles: Which one would you Choose ?

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Couple of months ago, President and CEO of one of the big ICT companies (no press release of the talk available , so keeping name for privacy) was invited to give a talk, at an annual celebration which I happened to attend. During the questions & answers session. Host asked him, where do you see […]

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Stock Market Dynamics vs. Wireless Communication Dynamics

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  I thought to share an interesting story from couple of years ago. Back in 2010 , I had a neighbor who bought huge number of stocks when BP oil spill incident happened. Our mutual friends started making fun of his move. They said all kinds of things to him. Things like “You are going […]

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