Technical advancements on the road to 5G

[bigsnake49]

An interesting article on Light reading on some recent technical advancements:

 

1. Full duplex wireless (great for TDD, it obviates the need for FDD)

2. WAM that replaces QAM and promises 10db better performance 

3. pCell - Well we all know about that one

 

For more details:

 

http://www.lightreading.com/mobile/5g/radio-revolutions-on-the-road-to-5g/a/d-id/709060?

 

[EmeraldReporter]

Will 5G implement the best qualities (or improve upon) Qualcomm CDMA?

 

How many versions of 5G will there be?

 

UMB was the best 4G tech, which was effectively stillborn from the start. (Because of VZW.)

 

Will this version of 5G be considerate of America's immense coverage area needs?

[Destroyallcubes]

Will 5G implement the best qualities (or improve upon) Qualcomm CDMA?

 

How many versions of 5G will there be?

 

UMB was the best 4G tech, which was effectively stillborn from the start. (Because of VZW.)

 

Will this version of 5G be considerate of America's immense coverage area needs?

Why do you say UMB  was the "best" 4g tech?

[EmeraldReporter]

Why do you say UMB (otherwise known as EV-DO Rev. C) was the "best" 4g tech?

Because:

 

•It was backward compatible with CMDA 1x/EV-Do, and supported SVDO from the start.

 

•It was the most spectrally efficient of the big three. (LTE/WiMAX/UMB)

 

FROM PDF #01 BELOW:

 

•Utilizes statistical multiplexing

•Hybrid frequency reuse

•Supports OFDM

•Adds multi carrier support

•Rev A uses 1.25 MHz carriers, most likely 3 per user would be used for Rev B, or 3.75 MHz

•This is unique from HSPA because the carriers do not need to be adjacent

Allowing operators to combine spectrum from multiple blocks

 

PDF #01 link:

http://www.ittc.ku.edu/~frost/Access_Technologies_Course/EECS_766_Spring_2008_Presentations/LTE_UMB_WiMax%20presentation_final_Elster.ppt

 

 

••It's one flaw I think, was that it wasn't TDD compatible.

 

If I've said something incorrect, please correct me.

 

Maybe it's remorse for CDMA dying a slow death, but it is what I believe to be true.

[SpenceSouth]

Because:

 

•It was backward compatible with CMDA 1x/EV-Do, and supported SVDO from the start.

 

•It was the most spectrally efficient of the big three. (LTE/WiMAX/UMB)

 

FROM PDF #01 BELOW:

 

•Utilizes statistical multiplexing

•Hybrid frequency reuse

•Supports OFDM

•Adds multi carrier support

•Rev A uses 1.25 MHz carriers, most likely 3 per user would be used for Rev B, or 3.75 MHz

•This is unique from HSPA because the carriers do not need to be adjacent

Allowing operators to combine spectrum from multiple blocks

 

PDF #01 link:

http://www.ittc.ku.edu/~frost/Access_Technologies_Course/EECS_766_Spring_2008_Presentations/LTE_UMB_WiMax%20presentation_final_Elster.ppt

 

 

••It's one flaw I think, was that it wasn't TDD compatible.

 

If I've said something incorrect, please correct me.

 

Maybe it's remorse for CDMA dying a slow death, but it is what I believe to be true.

 

I've heard of UBM but we haven't talked about it much, if any, around the forums.  I found this rather interesting.