Richard Jhon Free Space Model for LTE Free space indicates an ideal, even, and isotropic medium of space. When electromagnetic waves are transmitted in this medium, no reflection, refraction, scattering, or absorption occurs. Propagation losses are caused only by the energy spread of electromagnetic waves. Satellite communication and microwave line-of-sight (LOS) communication are typical examples of free … Read more
LTE Link Budget and Coverage Planning Here I write on LTE RF link budget basic but important topics and criteria to remember for coverage planning for LTE. Let’s start topics. Why Link Budget Operators are rightfully focused on the service quality of a system and coverage is an important part of the service quality of … Read more
How Frequency Band Selection and Cyclic Prefix Planning for LTE It is very important when we talk about LTE Planning frequency band selection and Cyclic Prefix planning here I write basic background of it. Frequency Band Selection As many Operators worldwide possess spectrum in various frequency bands, choosing which band to use for LTE is … Read more
What to Consider for TDD Specific Frequency Planning in LTE Here I write on LTE TDD Specific Frequency Planning Considerations. What to consider and why for TDD Frequency Planning. It is very common for telecom Operators within the TDD band of LTE have a wider unpaired spectrum than the bandwidth defined maximum carrier bandwidth of … Read more
Here I write about each and every channel of LTE with its Functionality. How many channel and what its work. LTE Channel Functionality. List of channel with its work Physical channels PDSCH: Physical Downlink Shared Channel PBCH: Physical broadcast channel PMCH: Physical multicast channel PDCCH: Physical Downlink Control Channel PCFICH: Physical control format indicator channel … Read more
Beam Forming background for LTE Multiple antennas in LTE may also be used to transmit the same signal appropriately weighted for each antenna element such that the effect is to focus the transmitted beam in the direction of the receiver and away from interference, thereby improving the received SINR. The beam-forming weight vector should increase … Read more
How Spatial Multiplexing Matrix Using Two Antenna Ports in LTE Spatial multiplexing is where multiple independent streams are transmitted across multiple antennas. If the receiver also has multiple antennas, the streams can be separated out using spatial multiplexing. Instead of increasing diversity, multiple antennas in this case are used to increase the data rate or … Read more
What is Basic behind MIMO for LTE MIMO and other transmit spatial diversity scheme is a newer application than receive diversity and has become widely implemented only in the early 2000s. As the signals sent from different transmit antennas interfere with one another, processing is required at both the transmitter and the receiver in order … Read more
To Improve Error Protection and Security of Data the Data is Interleaved and its type is Diagonal let’s check how it works. The diagram below illustrates, in a simplified form, diagonal interleaving applied to a 9.6 kbit/s data channel. The diagram shows a sequence of ‘data blocks’ after the encoding process previously described, all from … Read more
As All Channel Interleaving in GSM but control channel is some different interleaved its interleaving rectangular lets understand how it. The diagram below illustrates, in a simplified form, the principle of rectangular interleaving. This is applied to most control channels. The diagram shows a sequence of ‘control blocks’ after the encoding process. Each block contains … Read more